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1. Gain control slide to desired gain Opening an image does not change the current display settings amp measurement options It is possible to change these settings as a group by saving an acquired image with specific display settings as a ojf file and then opening this file which contains display and analysis settings See Sec 3 3 1 Important 1 The displayed profiles are the line profiles along the crosshairs Later you will learn how to change crosshair Orientation Sec 3 1 7 and Position Sec 3 4 and how to generate Effective slit profiles Sec 3 1 7 Important 2 The widths 2werefudeavaArea are for these line profiles u and v are used rather than x and y because conventional x horizontal and y vertical may not correspond to the orientation of the crosshairs WinCamD Series 29 Quick Start Tutorial Put the cursor on the 2D image and press i on the keyboard to zoom up to x10 about the crosshair position by default the centroid here Press o on the keyboard to zoom out i and o also work on profiles when the cursor is in the profile area Important 3 The Exposure time for a recalled file is shown in the top line on the screen see next paragrah It is not the value shown in the Exposure time bar below the 3D display this bar is only correct for the current image from a connected camera 3 1 3 Main Screen Top Q The blue gray streak of Caption bar at the top displays
2. 120 7 5 mm tbc i NS _ IA C Mount 1 4 20 gt 1 1 0 32 UNC 2B 0 3 deep PNS o 0 20 i l a 0 2 65 2 4 5 1 525 0 175 0 Introduction Saturation Power Energy Graphs Imagers respond to irradiance W cm We address CW and Pulsed lasers separately Graphs for WinCamD UCD12 Other sensors will be within a factor of 2 Beam power above the limits See Chap 5 WinCamD Series Saturation Power Limits 40 us Exposure ND4 0 filter 85 of ADC CW Beam Power For Lower limits divide by 25 000 Higher amp lower powers are possible with available accessories mW 1000 100 10 0 1 0 01 0 1 13 5 Beam Diameter in mm CW lasers Pulsed See next page The graph shows saturation optical power that the standard camera configuration with ND4 filter can measure versus beam diameter and wavelength The Saturation Limit assumes The ND 4 0 filter in place Electronic shutter set at 40 us The gain is set at 1 The Lower Limit is 5 10 x the Saturation Limit Power gt 2 5 x Beam diam in mm W or gt 10 W may damage the ND filter The limit is lower for pulsed lasers especially ns amp fs lasers Use the graph right to estimate for wavelengths other than those shown The variation is due to a combination of detector responsivity versus wavelength and ND 4 0 filter actual transmission versus wavelength 12
3. 2Wua 4Sigma 2Wub 50 0 Exposure time 200 0 ms Auto 4 d o 0 o fp T o i F a a a o or m a o uw 5 o fae uw a o o o gt oa a T a z a 3 a ao fa oO Nh 00 WinCamD Series Profiles Area Quick Start Tutorial 3 1 2 Examine Previously Saved Data 5 Click on this button or enter Alt F O to open the Open dialog box Select Sample wcf file and click OK to see a screen similar to that below This real image is the 20 sample average of a single mode fiber output As software upgrades occur the detailed appearance and or the initial settings may change DataRay v6 00R11f Recalled v5 00K5 WinCamD 1 0f 1 Exp 0 000ms Filter 0 2 Wl 660 0nm Pixels 4 65 4 65 Image 1024 by 1024 F t2 ad xc xxxn F O 1 8 6 MEM xYyYeB L E Or GmMa ge Clip a 13 5 cy 135 8 um Pixel 46774 71 4 Average of 20 View 225 THe 99 Clip b 50 0 Ne 2W_Major 1537 7 um 2W_Minor 1510 4 um Eff diam 1483 0 um Ellipticity 0 98 Orientation 79 8 deg Relative Power 0 00 Full Range 2 Crosshair 44 8 deg ax Xe 131 9 um_ 4 ee of delay 0 001 ms Yc 32 6 um ae i Ne Imager Gain 1 0 Peak 80 2 ae aD time 200 0 ms futo 2Wua 13 5 1538 3 um 2Wva 13 5 1531 5 um 2Wub 50 0 832 1 um 2Wvb 50 0 834 6 um i cale 800 0 umjdiv Peak 71 7 B 0 2 Scale 800 0 umjdiv Peak 71 4 B 0 2 le a
4. DataRay v6 00R12q Recalled v5 00K5 WinCamD 1 of 1 Exp 0 000ms Filter 0 2 Wl 660 0nm Pixels 4 65 4 65 Image 1024 by DataRay vx yyz The software version on your PC Recalled vx yyz The software vereion on which the file was saved WinCamD 1 of n The profile number i of n Exp x xxxms The exposure time of the saved image Filter 0 2 The profile filter setting WI 660 0nm The set wavelength Pixels 4 65 4 65um The effective pixel pitch Twice the actual pixel pitch in the default Fast mode 1024 by 1024 The Capture Block size QO Pull down Menus have a quick look Note the existence of keyboard short cuts Section 3 2 describes the pull down menus in more detail File Device Palettes Average Filter Camera view Centroid Setup UO Toolbar Button Bar Accesses frequently used functions Sec 3 3 contains detailed descriptions 4 2a Xo Xp Xu N F Oil SSID M XY BLIO E ANA If you have no camera installed and are simply evaluating the software then a number of buttons will be grayed out Hover the mouse over any button to see a description of its function If additional buttons appear in later software revs hover the mouse over them to determine their function 30 WinCamD Series Quick Start Tutorial 3 1 4 Main Screen Left Hand Side E Clip levels User set profile clip levels that s m determine 2Wa and 2Wb The Clip level is the Glip a 13 5 of the peak of the line pr
5. Fd Microsoft Excel logit xls E File Edit View Insert Format Tools Data Window Help DOS E SS 4 G mE F ornu A E Fl lpi gt e Time ln Si Sample 2Wua Pioa GF it TopHat a Dial 2VVvb Dial GF it TopHat sc Ye 2 1 3496 5 3 4 0 952 0 331 3746 061 2125 565 0 955 0 329 569 553 51 474 a 2 3491 0 95 0 306 3740 473 2127 677 0 953 O55 569 674 51 203 a T 74 L n a m ar aaa TT ad Ta 747 Fa aoe a aaa rT or ra aa WinCamD Series 59 Quick Start Tutorial os Results log to Text File Logs results data in real time to a file called RTDATA txt example shown where it is available for access by other software By monitoring the Update_key you can determine when updated data is available for readout P RIDATA TXT Notepad File Edit View Help Update_key 50 If it s not here it s zero Format oR Image Log Logs up to 64 images at intervals PAN TET of 1 to 5 000 s An example is shown below uwincamb_width_at_clip_l 3804 8880 U_wincamo_width_at_clip_2 1994 1635 vowincamb_width_at_clip_l 3869 9743 _Wwincamb_width_at_clip_ 2 2053 8683 Uniformity wincamb 0 6930 Ew dth_wi camo 3826 7456 xc_wincamd 407 1197 Yo_wincamb 913 1700 xg_wincamd 401 9354 Yq_wincamD 904 4648 1p wincamE 388 6000 e 857 6000 Ellipticity_wincamb 0 9964 mMmajorwidth_wincamD 3793 6228 Mi norwi dth_wi camo 3780 0723 Meanwi dth_wincamo 3803 1562 Peak_wincamb 0 8462 The_end lt
6. ND Filter Dust amp Marks If you see what looks like circular diffraction patterns on the screen that do not move with the source image then these are dust specs on the ND filter Sometimes simply moving the image or rotating the filter will move the spots off the image To clean the ND filter first unscrew it from the camera These spots are most easily cleaned with an oil free air duster Some air duster fluid can leave a film so keep the can upright do a test spray to one side first and bend the nozzle if the angle is awkward If the problem is finger marks rub with a small quantity of laboratory grade ethanol or methanol on a lint free cloth paper towels are quite good paper handkerchiefs are appalling Sometimes you have to do an alcohol wash with a cotton bud first followed by an edge to edge blow dry Some marks can be water soluble but not alcohol soluble Rub with a damp lint free cloth Imager Chip Dust If you see very small black spots on the image that do not move with the source image or when you rotate the filter then this is dust on the chip A small of dust is inevitable so try to avoid the pursuit of perfection However if the dust is interfering with the measurements at your own risk remove the ND filter and use an oil free air jet to blow the surface of the chip With the filter removed in typical ambient light the ambient illumination of the imager will easily show such spots so it is simply to te
7. colormap gray colorbar axis equal Delta 334 5 um Pixel 47348 72 2 Average of 20 100 200 300 400 600 700 800 900 1000 0 200 400 600 800 1000 DataRay software false color image 16 bit TIFF displayed in MatLab WinCamD Series 95 Appendices APPENDIX E Spatial Response Variation Compensation Applies to TaperCamD TaperCamD20 15 and U series cameras You may use this approach to compensate for any spatial non uniformity in the response of the array 1 2 3 4 5 Go File Load defaults This sets Fast mode and a 1024 x 1024 Capture Block in the position shown If you will be working in Full resolution mode select that option In the Setup pull down menu choose Capture setup dialog ALT S Set the Pixel multiply factors if it should not be 1 0 E g 2 25 for the TaperCamD See page 1 14 for values Click OK Right click on the 2D image and choose Force crosshairs to zero degrees amp Crosshairs user placed Place the crosshairs in the approximate center of the image not critical Remove the ND filter and attach a tube at least 100 mm long to the front of the camera Point the camera plus tube at an approximately Lambertian source E g a ceiling or a wall with a non glossy finish Press the Go button The illumination level must be such enough that the Exposure time lies between 1 000 ms and 50 00 ms In the Average pull down menu set Average 2
8. Capture setup dialog Press ALT S to open the WinCamD Capture Setup dialog The top of the dialog screen shows the Firmware version and the Clock source If you see problems Product Support may ask for this information This screen operates in live mode only i e not on recalled images and allows you to do the following USB Capture Setup USB 2 0 version Capture Resolution C FULL 4 65 4 65 microns FAST 9 30 9 30 microns Capture Block camera pixels fe F242 C B64 64 C 1284128 C 256 x 256 O 364 384 C 512x512 3 3 l 752 752 O 1024 x 1024 f 1200 2 1024 f Custom ox o o s ovo Flip image vertical Rotate 180 deg W Enable auto baseline substraction x start point A E amp start 30 Gain 1to5 4 CE G 070 Drag capture bos to desired location ADC offset adjust X32 1056 Y 0 1024 ADC Peak 891 Fisel multiply factors Offset w Set my E a x j 00 T v AE Lock ADC offset disable auto adjust IR Camera and Compensation file settings Gamma Compensation file location BY cto 1 00 Browse CompLo 0 20 CompHi 5 00 Corp First then gamma f No test defaut Testmode1 Testmode2 Testmode 3 Slower clock 30Mhez ve 48Mhz Not all cameras support test mode Set defaults Cancel WinCamD Series 53 Quick Start Tutorial 1 2 3 4 5 6 7 8 9 54 Capture resolution At the expense of a factor of two in linear resolutio
9. Capture status messages are displayed in the box on the left hand side immediately below the button bar Auto Trigger Mode Operation a b c d e 74 As previously advised first set up approximately in CW PHa Salt tets thy mode Press Ctrl T or right click on the non slider area of the C Trigger is Off Trigger Control box to open the dialog box shown Auto Trigger On Exposure setable and select Auto Trigger On Exposure settable Unless you have a reason to select otherwise start with the defaults of 10 and 100 for the Minimum amp Maximum level in percent respectively The is expressed as a proportion of the saturation level of the ADC as shown on the screen Beams with intensity above 100 will also be captured Setting to any value below 100 e g 99 excludes such beams If the Minimum is set at 0 then the software triggers on noise as well as real beams Pulse Repetition Rate dependencies PRR lt 25 kHz Choose Exposure settable mode below PRR 225 kHz Treat as a CW beam and ignore pulsed laser operation The of pulses captured per exposure Exposure period in ms x PRR in kHz Exposure settable mode Choose this mode if you wish to use the Exposure time to help control the beam saturation Control can mean attenuating a single wide pulse beam by capturing only a part of that beam e g a pulsed LED or sampling a string of high PRR laser pulses by capturing a larger
10. For two typical sampling fractions the calculated sample intensities may be calculated as follows Qo So 1 1 100 So 0 05 1 2 000 WinCamD Series 83 Laser Attenuation 1st Order 10 So 1 100 ND2 0 1 2 000 ND3 3 24 Order 20 So 2 1 4 10 ND4 6 1 1 6 107 ND7 0 3 Order 30 So 3 7 1 3 6 10 ND7 6 1 2 88 10 ND11 5 Due to manufacturing tolerances the exact value of the sampling factor and angle may vary and the 3 order beam may suffer some unspecified level of distortion At wavelengths other than the design wavelength replace So by s and 8o by 0 Sampling fraction s So Ao A i e S decreases as increases Sampling angle 0 arcsin Sin 9 A Ao i e 0 increases as i increases E g Consider a first order HBS designed for 1064 nm So 1 0 10 Used at 800nm the values change to s 2 1 0 6 9 Standard HBSs are wedged by e g 30 arcmin perpendicular to the sampling angle plane in order to avoid interference effects Sources of diffractive sampling optics include Gentec www gentec eo ca Note that binary gratings are not holographic gratings and though less expensive may not perform as well in terms of ghost images etc 5 4 UV Lasers DataRay offers screw on UV converters Download the UV Profilers Datasheet from the website sg 5 6 es is gf a 84 WinCamD Series Laser Attenuation 5 5 Working With Beams Larger Than The Camera This
11. However whilst the visible region is flat the transmission decreases dramatically below 400 nm and increases dramatically above 600 nm See and use the graphs above If T is the transmission including surface reflection losses then ND logiol e g at T 1 0 01 ND 2 0 ND is sometimes referred to as OD or Optical Density ND is more correct for these filters since they have a relatively flat response with wavelength compared with the more peaked response of a typical OD filters Internal transmission values are correct to an estimated 5 Front and back surface reflections lose another 8 on the values graphed The 1310 versions of the cameras come with a long pass IR filter which has lt 0 5 transmission at lt 1280 nm 5 transmission at 1288 nm 50 transmission at 1291 nm gt 75 transmission from 1295 nm to gt 1600nm 14 WinCamD Series Introduction A complete camera system comprises Camera ND 4 0 filter Software 3 m 10 ft Cable User Manual The Part Number on the rear label derives from the descriptions and in the table below Part Camera type amp Sensor chip Suffix if required BladeCam HR WinCamD UCD12 UCD23 or XR TaperCamD UCD12 TaperCamD20 15 UCD23 UV 1310 or IR eS NAI NA NA e g WinCamD UCD12 is a complete working system with a High Resolution CCD sensor with 4 65 um pixels 1 6 TaperCamD UCD12 1310 is a complete working system with a 14 4 x 10 8 mm FO Taper
12. Technical Support 93 Threshold Damage 17 tiff files 48 95 Toolbar Button bar 30 56 Top hat fit 44 105 Index Trigger 66 71 Auto 74 External 76 Input 76 Output 76 U profiles 32 UV converter 20 UV lasers working with 83 V V profiles 32 Variance Second Moment 36 88 Vista 99 Visual Basic 24 Visual C 24 W Wander beam 53 Wedge Prisms 83 Windows Vista 99 Wireframe 35 X Y Z Zero Centroid 32 Zero level 32 Zoom Image 29 Profile 29 Numeric 2D Image 28 33 3D View 34 4c Second Moment Beam Diameter 36 88 106 WinCamD
13. and wedge angle o then Samples come off at the following intensities and angles Surface Intensity x 4 Angle x 1 x x 1 x x Top X 4 0 10 6 Bottom 1 x 0 92 0 n o Top x 1 x 3 7 10 0 2n ee a ooo Bottom x 1 x 1 5 10 0 3n Top x 1 x 5 9 10 0 4n Bottom x 1 x 2 4 10 0 5n Eventually the remaining energy is totally tax Lax 12x internally reflected As angles approach the critical angle for total internal reflection the sampled intensity becomes extremely sensitive to the polarization of the beam Q Holographic Beam Sampler HBS A holographic diffractive beam sampler transmits the main part of the beam and diffracts a percentage of the light into multiple orders off to one side The hologram is a surface structure in the fused silica used for silicon wavelength HBSs giving substrate damage thresholds are as high as the 1kW cm of the starting material just like wedges and windows For pulsed beams keep the level below 1J cm especially at lt 400 nm A major advantage of HBSs over angled wedges and windows is their polarization 5 3 insensitivity lt 1 at 10 and 5 at 20 j WCamD sampling diffracted heam HBS Incident beam Main Transmitted Beam Diffracted beams at 0 20 Sampling ratios range from 1 50 to 1 2 000 in first order A typical HBS is designed for a sampling fraction so at Ao at 0 in first order
14. 37 Beam Definition 87 Fit 43 gif files 49 Global Selection 41 Grids 35 42 101 H Hardware Mounting 11 23 Pull down Menu 47 Quick Start Tutorial 67 HBS 83 Help Tech Support 93 Holographic Beam Sampler 83 HyperCal 34 58 64 I IEC 60825 55 Image Artifacts 69 Average Filter 51 Inclusion Region 34 73 Ink Saver 57 Installation 19 Driver 22 Software 21 Intensity multiplier 42 Invalid data 40 IR camera settings 54 Irradiance Beam 87 Damage 17 104 Definition 79 Peak 79 Saturation 12 13 ISO 11146 35 88 J jpg files 50 K L LabVIEW 24 Large beam measurement 56 Line Type 41 Linear 41 Live versus saved 57 Log data 58 Logarithmic 41 M Magnification see Pixel multiply Factor Main Screen 28 Major axis 31 MatLab 95 Manual Conventions 18 Maximum Power Graph 12 13 17 Mean axis 31 Measuring distance 47 Menus Pull down 47 Minimum computer requirements 21 Minor axis 31 Mirrors use of long focal length 85 Mode Normal Fast 54 Mounting the head 11 Multi beam display 35 100 N Neutral Density Definition 80 Filters 80 Filter cleaning 69 Filter transmission 15 Normal mode 54 Normalize Profile 41 O Offset adjust 54 ojf files 29 50 Open 49 Orientation 31 Outline amp Mounting 11 WinCamD P Palette 59 Pan Image Profile 47 Pass Fail Criteria Colors 40 Setup 39 Password 39 PC minimum requirem
15. 4 65 uM Pixel Size v 3D enabled 2D must be enabled v High color palette Monochrome palette 32 color palette 10 color palette Yi Click and drag in the 3D box to change the view of the 3D image Side to side motion rotates the image Up down motion changes the tilt angle Ink saver option 32 Wires 64 Wires Right click the 3D image and a floating menu appears pas Solid is visually best but processor intensive and can vy Solid slow the update rate on older slower PCs Experiment 96 kibi wires is normally overkill 64 wires are often enough Zoom the 3D image area by zooming the 2D image Image to dipboard Save image as Bitmap file Auto rotate does precisely that but slows update ARa Deselecting 3D enabled speeds screen update WinCamD Series 35 3 2 Quick Start Tutorial There are three image export options Image to Clipboard Save image as Bitmap file and Export to Paint opens Paint 3 2 2 Choose a Beam Width Definition 36 Click on the Clip a or Clip level entry x Clip b button to open the Clip level Width calculation methods Quick selec entry dialog box that ee ee 135 1 22 allows you to choose a fe Clip level method a Beam Width definition C Sigma 8 4 variance method C 96 5 for the displayed ae profile Clip level input Enable knife ed d Ras s S S 13 5 1 e7 is the nable knte edge mode industry s de facto standard Strictly
16. Capture Block can be changed from 32x32 to 1600 x 1200 or 1360 x 1024 CCD or 1200 x 1024 UHR CMOS Imagers The HR sensor has a rolling shutter which can lead to horizontally chopped images of pulsed lasers USB 2 0 This 480 Mb s serial port now standard on every new PC uses flexible serial cables and compact connectors WinCamD U series cameras are port powered requiring no external power supply Digital cameras In WinCamD series cameras the software talks directly to the chip This enables external trigger wide shutter speed control and user defined image capture regions with higher update rates The serial digital link from head to PC is insensitive to the EMI Electro Magnetic Interference problems that used to plague analog video links in high power pulsed laser measurements 1 3 System Configuration amp Description WinCamD imaging systems consist of the interchangeable camera head 3 m 10 ft long USB 2 0 cable and the software The system is shipped ready to install on any PC with a 2 GHz or higher processor with 21 GB of RAM and an available USB 2 0 port Longer cables runs up to 5 m are possible with extensions or 25 m with booster cables hubs The imager chip is driven via a FPGA with embedded firmware WinCamD can define the Capture Block the area of the CCD from which the data should be taken and the Inclusion Region for which the data should be analyzed O use Fast mode half Full re
17. Gaussian Beam Divergence Measurement Gaussian beams do not follow the same rules as incoherent beams described by geometric optics For a Gaussian beam it may be shown that When a Gaussian beam passes through a lens the far field divergence of the input beam may be determined by measuring the Second moment beam diameter at the back focal distance from the lens This is true irrespective of the distance of the source from the lens Note that this is not the position of the beamwaist formed after the lens though it may be very close It obviously assumes that the lens does not introduce additional aberrations normally achieved by using a long focal length achromat coated for the wavelength s of interest The far field divergence of the input beam mrad is calculated as 2W F mrad Where 2W um is the measured Second moment 40 beam diameter in the Measurement plane F mm is the focal length of the lens at the wavelength of interest Measurement plane I Beamwaist plane Modelling See the Gaussian Beam Divergence Measurement Excel at the website Application This technique requires an appropriate lens and a beam diameter measurement instrument WinCamD Series 37 3 2 Quick Start Tutorial The instrument may be a WinCamD series camera or a Beam R2 scanning slit XY profiler The lens must have a known focal length preferably AR coated for the wavelength s of interest and be
18. I LOG EVERY 30 SECONDS UNTIL 25 IMAGES ARE CAPTURED 50 Max Log File Name Same at WinCamD save mct WinCamLog_1_2_03 wet browse OF In the future the number of images will be increased and the interval will be reduced to as fast as possible Because this function fills up your hard drive at 2 1 MB per full resolution image the software will assess available space and deliberately not fill it WinCamD Image Log Setup Cancel 60 WinCamD Series Quick Start Tutorial ma Beam Wander Use the button or press Ctrl W The display auto scales as points are added The number in brackets after the RMS value is the Standard deviation value LU RMS Y Xr Yr7 n where Xr Yr are relative values o D Xr Yr n 1 Time interval allows you to set the time interval between samples Samples to be recorded allows you to MEET LE set the number of samples up to 8192 Clear restarts the plot after a warning Normalize recenters the plot Replay or Replay Fast replays the beam position history 3 4 Sequence off Press this button and use the and buttons on the numeric keypad to scroll through the data for the deviation data for the individual points To Clipboard puts Beam Wander to the Windows Clipboard To Excel opens the data in Excel Export to Paint opens the image in Paint Save as bitmap does precisely that Scale radius 10 um Samples take
19. Series 89 App Appendices Appendix B Accuracy Precision amp Resolution At Issue Customers ponder and sometimes ask the following apparently reasonable questions i What is the beam measurement accuracy error of WinCamD Series li How can you justify listing accuracy values smaller than the pixel size iii How does the accuracy depend on the beam size They may feel frustration when the answers are not always totally clear cut and unambiguous Why the uncertainty Why is every answer qualified by depending of course on the actual beam 1 Definitions Accuracy versus Precision versus Resolution The Accuracy of a reading describes how close the reading is to the Absolute value of the parameter being measured The Absolute value is the value that would be read by a perfect measurement system in perfect calibration with zero errors The Precision of an instrument refers to the Repeatability of the value obtained An otherwise perfect measurement instrument that was incorrectly calibrated could be described as Inaccurate but Precise The Resolution of an instrument refers to the smallest increment i e above the noise level that the instrument can measure Readout Resolution is the smallest increment that may be read on the screen or via the software interface DataRay software offers several Numeric Display Modes The default is XXX Y um The user may choose other options but simply choosing a higher N
20. WINCAMD SERIES PRODUCT SPECIFICATIONS ivcsccccescccvescuuueeuuueeeuuuenauuvenauuuenaunengs 9 1 6 BEAM AMIE Sy ocyoeupeuaersovrrevyseseepsssndtaasesanseasepaaepaeepaisesbeaenuenieeesenresasiiaeiaocne 17 10 1 Beam Meas u Emen REIO arrn EA 17 1 6 2 Beam OES acorn ci eect ot en ee ce eee 17 1 7 MANUAL CONVENTIONS ccveseccceeccceeeucueeeuuveneuuveneuueeeauueeeuuveneuuuenauuvenauuetsuuuengs 18 1 8 MANUAL AND COPYRIGHT NOTICE s vessccccnancpananapanarananenaeenannadadensiedeneanaenmananenans 18 1 1 Welcome Welcome to beam imaging These innovative products define state of the art feature rich real time camera based beam imaging in accordance with the ISO 11146 Standard They are Research Development QA and Manufacturing test tools combining easy to use intuitive software with proven beam profiling algorithms With a little time and patience we think you will be pleasantly surprised with how easy to use we have made it This manual covers all WinCamD series products of which BladeCam amp TaperCamD series are a part We welcome requests for custom hardware configurations The website is always the source for the most current versions of software manuals application notes specifications parts lists etc You may download the latest version of the software for free plus manual updates and application notes You may install and use this software on other computers at no additional charge If you need a function that is not includ
21. XR 1 2 CCD 2 3 CCD 12 CMOS 171 8 CCD Pixel Count amp 1 4 M Pixel 1 4 M Pixel 1 3 MPixel 1 92 MPixel H xV 1360 x1024 1360 x1024 1200 x 1024 1600 x 1200 Sensor image area 6 3 x 4 8 mm 8 8 x 6 6 mm 6 2 x 5 3 mm 7 0 x 5 3 mm Pixel dimension 4 65 x 4 65 um 6 45 x 6 45 um 5 2 x 5 2 um 4 4 x 4 4 um Min beam 10 pixels 47 um 65 um 52 um 44 um Shutter type Synchronous Synchronous Rolling Synchronous Max full frame rate 10 Hz 10 Hz 10 Hz 10 Hz Max every pulse PRR 10 Hz 10 Hz 10 Hz 10 Hz Single pulse capture PRR 20 kHz 20 kHz 20 kHz 20 kHz Signal to RMS Noise 1 000 1 1 000 1 1 000 1 1 000 1 Opt Elec dB 30 60 dB 30 60 dB 30 60 dB 30 60 dB Dynamic Range Electronic Shutter 43 dB 43 dB 43 dB 43 dB ND SNR 113 dB 113 dB 113 dB 113 dB 2 101 1 2 101t 1 22402451 2 101 1 TaperCamD pixel 10 5 x 10 5 um TaperCamD20 15 pixel 14 5 x 14 5 um ADC 14 bit 14 bit 10 bit 16 bit 16 384 levels 16 384 levels 1024 levels 65 536 levels OK we agree that quoting electrical dB for optical SNR is a nonsense but some suppliers do this so we offer a comparable specification OK we agree that Dynamic Range that includes removable ND filters is also nonsense but some suppliers do this so we offer comparable specification with ND 4 ITEM SPECIFICATION CW beams HR is CW only Pulsed sources Isolated pulse 1 to 25 kHz single pulse isolation Sof
22. a n WinCamD with Beam Expanders O and WinCamD with microscope adaptor objective OY WinCamD with C mount lens WinCamD series X 3 m USB 2 0 Cable USB A to USB Mini B5 Up to 5m available Longer with booster hub WinCamD series Configuration 20 na e c 4 R A WANA Peuran emg unra pa eid YUM NZLOOL ASE USB 2 0 port on PC Notebook Tablet PC Hub Booster cable PCI card on PC Cardbus in Notebook Standard 500 mA port required WinCamD Series Installation 2 2 Minimum Computer Requirements O WARNING PC s with an unusual BIOS particularly so called Industrial PCs may be difficult to configure to work with the hardware Stick with good name brand PCs wherever possible 0 Windows 7 Vista amp XP 32 amp 64 bit are supported Q A 1 GHz Processor faster The software uses floating point calculations therefore a processor with integral numeric coprocessor is required O gt 1024 x 768 display with 2256 colors Q USB 2 0 port with 500 mA capability the standard except on unpowered hubs Q A Microsoft compatible pointing device Q 21 GB of RAM 1 GB if you are to use the M2DU Stage A hard drive with 10 MB or more available space O A CD R drive 2 3 Installation Most installation problems are caused by not carefully following the instructions Hardware installation is never as simple as software only installation If you wan
23. and to set the power falling on the camera head to acceptable levels If you are unsure move the beam in slowly from the edge to first pick up the edge of the beam b Start in CW mode Press File Load defaults It is highly recommended that you initially treat the beam as if it were CW with the camera shutter on auto watching and centering the occasional captured pulses on the screen If you see nothing untriggered mode you will see nothing in any of the triggered modes At this stage you are concerned with ensure that the beam is not too faint to observe and on centering the beam on the imager 72 WinCamD Series c d There are two triggered modes of operation Capturing Pulsed Lasers Note that the Gain may be increased using the on screen slider located just below the 3D display areas Higher gains assist in setting the signal level Peak xx x to its optimum value of 90 of ADC saturation but at the expense of Somewhat degraded SNR Next minimize the dead Space around the beam by redefining the Capture Region Section 3 6 3 to be as small as possible while still fully capturing the beam If this is not done residual un subtracted integrated image background may be a significant percentage of the pulsed signal and may GOOD NOT GOOD compromise correct capture and analysis The software automatically subtracts overall background based upon the lowest signal level in the capture region O
24. at least 1 5 times and preferably twice the 1 e beam diameter at the lens Errors in the lens focal length value or positioning of the instrument with respect to the back focal length will lead to errors in the divergence measurement The spreadsheet models these errors The beam must be centered on the lens The beam centroid in the measurement plane does reflect the beam pointing The lens and instrument may be supplied by DataRay as a prealigned system or may be mounted on an optical bench or table Use the spreadsheet amp contact the factory for details and lens suggestions for your beam Accuracy Typically an accuracy of 0 1 to 0 05 mrad should be achievable To simply adjust an input beam assembly for best collimation minimize the value of 2W in the measurement plane Contact the factory for accuracy and misalignment sensitivity calculations for your beam 3 2 3 Set Diameter Display Mode Q Under Setup choose Numeric display Display modes Numeric Display Modes XXX Y um is the default choice Cancel 38 WinCamD Series 3 2 4 Set Pass Fail Left click on any result area of the screen to open a Pass Fail parameters dialog box You may set an Upper Limit and a Lower Limit for the particular parameter Note that the box below Parameter shows the name of the function for the purposes of software interfacing in this instance MajorWidth_WinCamD Check the Enable Test box to enable
25. at the point at which the intensity has fallen to 13 5 1 e of the peak value P is the total power in the beam The ISO standard specifies that a 4o beam diameter measurement should use at least 99 of the power in the beam For a circularly symmetric Gaussian this 99 of total power integrates out to a diameter of 3 03w the point at which I r has fallen to 1 For a Gaussian of Peak Normalized Gaussian Intensity Profile i 0 8 0 6 0 4 C N 1 e2 0 135 U 0 2 1 0 0 0 1 0 2 0 r w Circular Gaussian of Peak vs Included of Power App I r 50 Diameter 1 2w 100 I r 13 5 Diameter 2w I r 1 I r 0 5 I r 0 1 0 0 0 0 1 WinCamD Series Diameter 3 03w 90 Diameter 3 25w sae Diameter 3 7w 70 60 50 A 40 30 20 10 0 2 03 04 05 06 07 08 0 9 Included of Power Appendices 2 Beam Irradiance In order to assess whether the irradiance W mm7 from a given laser might overload a beam profiler it is useful to be able to calculate the peak irradiance From equation 11 the on axis irradiance at r 0 is given by I 0 2P nw 2 6P 2w W mm for 1 e 13 5 diameter 2w in mm For example e The peak irradiance from a 1 mm diameter 10 mW HeNe is 26 mW mm e The peak irradiance from a 5 mm diameter 5 W Nd Yag is 520 mW mm 3 Second Moment Beam Diameter Conventionally
26. click on the 2D area amp Force Auto orient crosshairs Crosshairs to zero degrees w Force Crosshairs to zero degrees f Force Crosshairs to 45 degrees e Optionally when the region is on the beam or beam position that you wish to set as the relative zero press z on the keyboard to set the Xc values to zero Don t Show Crosshairs e Optionally choose to focus on one of the multiple beams E g select Use third beam on multi beam display Questions As we go to press this feature is still being finalized Contact Support dataray com 100 WinCamD Series Appendices APPENDIX H Grids and Targets Grid and Bullseye Setup x Ver 7 0T7 amp higher This feature allows you to set a square grid on the screen and or to set up concentric beam bullseyes and target position bullseyes in order to visually assist in moving a beam towards a target position on the sensor Remember that if working some distance from the screen you can always press the L button in the toolbar in order to Grid Parameters MARS Grid size in millimeters Line size in pixels V Enable Grid 1 00 mm 1 pixel Inverse color ube Be EUS or set color gt Grid Centroid Offset lt Load Current Xe Ye x offset 0 00 uM Y offset 0 00 uM CCD Center Bullseye Parameters Target radius in millimeters gt r Line size in pixels Inverse color V Enable Center Bullseye 1 10 mm 2 pixels or set color gt Centroid Bu
27. or smaller number of pulses during each exposure WinCamD Series g h Capturing Pulsed Lasers Normally set Exposure 0 95 PRR to capture single pulses Any longer exposure time will capture 1 or more pulses E g For PRR 200 Hz set Exposure time to just below 5 ms 1 200 in order to capture nearly every pulse If background illumination levels are a problem set the exposure time to a lower value but at the expense of probability of pulse capture The camera will repeatedly capture beam images as fast as the set Exposure the software amp the PC will allow Pulses with an ADC within the set levels will be captured and displayed Pulses which do not meet the criteria will not be displayed Intensity Variations Because the Auto Trigger mode is asynchronous with the pulsing laser the intensity can fluctuate to a greater or lesser extent as one or more pulses fully or partially overlaps the exposure period and one or more pulses gets included To restrict the captured images to unsaturated images of reasonable intensity set the Maximum level in percent to 90 and increase the Minimum level in percent Then adjust the external attenuators and or the CCD gain until pulses are being captured A narrow ratio between the Maximum and Minimum levels ensures that only single pulses will be captured Important If you use an Exposure below the laser pulsewidth And the pulse spatial distribution changes during t
28. the file was saved X Y L X Y B amp L allow display of the X profile only the Y profile only Both X amp Y profiles or Large in which the profiles are not shown The Large option allows the viewing of a screen across the lab Select B to return to the default screen O A H Background Subtraction Right click on the Exposure time box amp disable auto exposure Click OK As appropriate set Average 20 especially if the background to be subtracted is noisy x Click the button to initiate background subtraction The box shown right will appear Block the beam Block beam and press OK and then click OK The captured background is subtracted from subsequent images If Average is still engaged subtraction will be gradual Cancel Ed HyperCal To engage HyperCal electronic fixed pattern noise elimination click on the middle red star button Press the bracket button 0 turn it off Press the bracket button to turn it off TA Select Beam gt Set Dialog The matrix button opens a dialog that allows you to select an image beam from the stored set Move the cursor over the array to view a beam Select Beam Set Dialog The left right keyboard arrows allow you to scroll through the beams without first opening the dialog The caption line at the top tells you which beam you are looking at Page Up Page Down has the same effect alo Live versus Saved These buttons allow you to toggle bet
29. the reason for return to obtain an RMA number and a copy of the current RMA form also found at the website b Print it out the RMA form found at the website fill it out keep a copy for your records and include a good copy with the shipment c Mark the number on the RMA form the outside of the shipping box and on the packing list attached to the outside of the shipping box 6 Pack it properly LJ Where possible use the original packaging Q Always ensure that all boards and hardware with electrical connections is first wrapped in static dissipative foam pink or mauve or bag metallic silver gray Q If an improperly wrapped item is found to be zapped by static unlikely but possible then we must charge you for the replacement U Include the cables 7 Return the equipment to the address on the RMA form Different products are dealt with at different facilities 8 If an International return carefully follow the instruction on the RMA form concerning Harmonized code product description and Value If this information is incorrect then you will be responsible for an excess duties taxes 94 WinCamD Series Appendices APPENDIX D Importing TIFF files into MatLab Applies to Import of 2D TIFF image files into Win ambSaveFileDisiog x MATLAB www mathworks com Ce a By default DataRay renders WinCamD files as false ae Save current data as wet color images There is also a monochrome option under Pale
30. to defaults Cancel Note particularly that Invalid If the software determines or suspects a result to be invalid for whatever reason the numbers will appear in gold yellow orange An example of determines is when the profile peak is gt 100 saturated or lt 10 in either case the results will appear gold as a warning Laser Glasses If you are using laser glasses select colors which maximize the visual contrast while wearing those glasses Highlight If you wish to highlight a particular set of numbers consider changing the background color Ensure that it is not a color that is too close to the text and or pass fail colors or the visual contrast will wash out Simplify To simplify the screen e g to make a result that is of no interest disappear in a production environment change the Normal Text and the Background to white That result will disappear Any modified screen layout can be saved as a job file See Load job and Save job in Sec 3 2 7 The Active X Name amp ID of the particular result box is given in the top blue line of the dialog box 40 WinCamD Series Quick Start Tutorial 3 2 5 Change Profile Display Right click on any 1D profile area to open the display selection box shown here Default settings are as shown Select Zoom More options v GLOBAL SELECTIONS ss Zoom 1X Set dip level 1 Need Help P Zoom 2X Set dip level 2 w Linear normalized zoom
31. 0 You may see an image something like that shown right There may some shading plus individual bad pixels or TaperCams small groups of bad pixels corresponding to the Clock source PCI Capture Resolution f FULL 4 65 4 65 microns f FAST 9 9 9 3 microns Capture Block camera pixels L 32 32 C B4 64 O 128 128 O 256 x 256 O 384 384 C 512x512 0 Fhe x 752 1024 x 1024 f 1200 1024 Custom lia s naw w High color palette Monochrome palette 32 color palette 10 color palette Ink saver option Auto orient crosshairs Force Crosshairs to zero degrees Force Crosshairs to 45 degrees Don t Show Crosshairs Crosshairs snap to centroid default Crosshairs snap to geometric center Crosshairs snap to peak location w Crosshairs user placed inevitable broken and cracked fibers in the fiber optic taper After Background subtraction you will save this as the compensation file Appendices 6 Press the background subtraction button The prompt shown will appear Block beam and press OK Block the open end of the tube e g screw on the ND4 0 filter if you have a C mount tube and press OK Unblock the tube press the Go button and let the Average grow to 20 Press the Stop button and Save this file as DXXXX_Default_Comp wcf where DXXXX is the SN on the label on the back of the camera As a default it will save in the DataRay directory by default c Program Files DataRay It i
32. 100 Relative Exposure vs Wavelength i 0 TUA 300 500 700 900 1100 Wavelength in nm WinCamD Series Introduction Pulsed Laser Saturation Limits See Chapter 4 for setting up to capture pulsed lasers Graphs for WinCamD UCD12 Other sensors will be within a factor of 2 WinCamD Series Saturation Energy Limits ND4 0 filter 85 of ADC Individual Pulse Energy This graph is for a single pulse within the exposure period pJ Higher amp lower powers are possible with available accessories E a SS SS CN EE SO T S E a a NN E E e a E E Se ee Z ET A tA EL BE A a A Cs i DD E CT peg Z ZEAE s EE S A E T E E E A A ECE gt r Nt i Ny RNAS N H H ER N N g REIR me i I N PEN ITIN N U TN TTNA NTT LAH A ll Y gt N N d NG Mihi Hi i MEE al a a 0 01 0 1 1 10 13 5 Beam Diameter in mm N PRR is the Pulse Repetition Rate of the laser PRR gt 25 kHz Treat the laser as CW based on the mean mW mJ pulse x PRR PRR 25 kHz The single pulse saturation energy limit is noted on the upper graph in terms of uJ within the exposure time To avoid multiple pulse capture set the Exposure time at 0 95 PRR If you set an Exposure time gt 1 PRR you will capture more than one pulse and the saturation limit will reduced in propo
33. 13 53 Angular Divergence or Pointing Angular Divergence Options Standard clip levels of Enable Painting Default xy Cositheta 2 13 5 1 e2 50 M Enable Angular Divergence Slit Scanners WinCam Effective Slt FWHM Full Width rc f Option lisy Cosltheta 3 Winlam Line protiles Half Maximum or 86 5 can be selected from the menu e Eo Me ie Any percentage 20 5 C Option PolarCam simple radial can be entered in the Source to imager dishance in mm Clip level input box 0 00 mm If ISO 11146 compliant Sigma X 4 variance Lenza method Second Moment is selected the clip level is ignored With a beam profile that is a pure Gaussian the Variance definition is exactly the same as selecting a 13 5 Clip Level but if your beam is non Gaussian and most beams are the Variance method may be more consistent An exception to this general rule is that a significant background level or background noise will skew the Variance reading to larger values For full ISO 11146 compliance select Average 5 see Section 3 2 10 In accordance with Section 6 2 of the ISO 11146 Standard the software calculates the Second Moment by integrating 99 or 98 if set of the total energy in the profile In order to allow for any baseline tilt the zero levels on either side of the center are treated separately and integration from the centroid is separately performed for 99 of the energy on each side of the centroid In the
34. 2131 5 um hand panel of results is defined based upon the total area above a certain Clip level Count the N pixels above 13 5 Area of each pixel is Ap Total area N Ap The effective beam diameter Deff is then Eff Diam 4 N Ap z 3 2 In the Setup menu choose Set Effective Diameter Clip Level to change the clip level from its default value of 13 5 Q The Zoom 1X to 16X allows you to zoom the profile area on which the cursor is currently sitting If Global selections is checked then all profiles will change TIP Pressing i and o on the keyboard zooms the profile in or out respectively and is much faster than accessing the menu UO Profile to Clipboard sends the profile on which the cursor is sitting to the Clipboard Save image as Bitmap file does precisely that O Export to Paint opens Microsoft Paint and places the profile in the Paint screen From there you can save as a gif or jpeg file Q Export Profile data to Excel opens Excel and tabulates and plots the profiles It is fast in Excel 2003 but miserably slow minutes in Excel 2007 an Excel bug nota DataRay bug UO Save Profile data as text does precisely that as a txt file WinCamD Series 45 Quick Start Tutorial Beam Profile Fit to Excel is found by right clicking in the profile area Profile fit values in spreadsheet may be changed by editing cells F30 to H40 in Form1 xls found in the c Program files DataRay di
35. 4 w Auto update 30 on Linear mode Zoom 8X Profile to clipboard Log 30dB mode Zoom 16X ean a ae Save image as Bitmap file A Export to Paint w Thin line mode Export Profile data to Excel Thick line mode Save Profle data as text Fill mode Beam Profile Fit to Excel Enter intensity multiplier default is 0 Set profile colors Enter new gain value w Auto Gain default is on Set display um div scale value w Auto Range default is on Enter over scan rato Show clip levels Show Clip Intercepts Show Gaussian fit Show Top Hat fit Show Max amp Standard Deviation Show Coefficient amp Roughness Show Uniformity within Clip A diameter w Show scale grids Q Global selections the default applies the selected items to all profiles 0 Choose Linear normalized default or Log 40db mode profile display modes Both linear modes set the baseline to zero to compensate for ambient lighting and preamplifier offset on a dynamic basis Linear normalized normalizes the profile to 100 irrespective of the crosshair position on the display and is the default display mode Log modes are useful for assessing low level structure and ghosts in the wings OY Choose between Thin Line default Thick Line and Fill mode to choose how the profile is displayed The latter modes are particularly useful when adjusting a laser WinCamD Series 41 Quick Start Tutorial assembly and observing the display monitor from across the t
36. 95 42052000090022052240 2 29 Jla Man TEET OD eia a da a nwa sada ans vata A E A AA E A A a a 30 3 1 4 Malh Sereeh Lele AGG SIAO ccicisietcdsiesecsdscdundiisdereecidmccdmadenubenemenad 31 iC i iro Main Screen Proe DISDIAY ivisiseis sess sde ear a a a a a aa aaa aa a a vats 32 3 1 6 Main Screen BOMOM LINE rae EEEE EEEE J3 Z1 Main Screen 2D and 3D Display Area s ssssusasrrsusersssesnsnsnnsnsrrsasennnae 33 3 2 MANIPULATE THE IMAGE AND PROFILE ANALYSIS ssssssssnssnnsnsnnnrsnnnrsensnsenarsesarnenenne 35 3 2 1 3D DISDIAV Ce Man Pulao si sis ndrdiinindindioiietiiadiiabieebidetdiadedusadeiadabeonda 35 32 2 Choose a Beam Width Definition cccccccnneecccnncccceeeceetnesennneeeennssenenes 36 3 2 3 Set Diameter Display MOs a aa 38 3 2 4 Sel Pass Fallera a a a 39 ee chande a ONS DIS PIV yar A E E E 41 3 2 6 FO C OWE MONU S A AOOO eee amy ue eee ae ye telus 47 32 ee ee E T A A A A T 48 3 2 8 DEVICE renean aea E eee e e e er ee 49 3 2 9 PAICTLCS sscuucocereincnsae AAAA N A 50 Sad AWV O A TCE REPT RTC Trey Tre 50 aede ER Ee en eee ee ee SI ODE A avETN RU EYE VETS TONES MEO a 51 Sel Camne Tesse 52 ILAS VIEW aisa AAAA AAA A A A AAA AAA AAAA AAAA AAAA 52 BS SET ee eee ee ee ee eee ee eee 53 3 4 TOOL oe ke ee Te ee ee re ee eT er eT er rr er re Tre rrr 55 3 5 SHORTCUTS REESEN ns weceee eae tebe E led taleb lab ileb lb leb wel 66 3 6 HARDWARE QUICK START TUTORIAL cccceee cece eee enn E EERE EES 67 3 6 1 Precautions and Safety WAPrningS u
37. Beam Profiling Cameras CCD CMOS Microbolometer Beam Imagers WinCamD WinCamD Series TaperCamD Series BladeCam Series D VERY IMPORTANT Read 2 pages This VITAL information is here so that you cannot miss it Register your product at www dataray com support prodregform html For Windows 7 Vista amp XP 32 amp 64 bit Windows Vista Read App F now New Now features CTE Comet Tail Elimination amp HyperCal H dynamic electronic fixed pattern noise baseline correction IEC 60825 d63 diameters added QuickStart if you are one of those rare people who do not read manuals 1 Minimum PC Requirements See page 2 3 You will install open amp close the software before connecting the camera Install as Administrator Sec 2 3 Open the software to load the driver Close the software 2 Install the camera Connect the camera head amp follow the New hardware found wizard to install the camera Do not let it go to the web to find the driver Let it install automatically Problem Sec 2 3 has more detailed instructions 3 Start the software The camera LED cycles Red Off Green Red Green If it stays Red the port is not reporting itself as USB 2 0 In the pull down menu verify Device WinCamD The software detects the camera type Remove the dust cap Press c 4 To avoid camera damage observe the maximum irradiance limits Section 1 6 2 Damaged imager chips are field rep
38. DLL then the effective Collection Factor may be calculated as 0 25 D L On top of this must be added the increase in irradiance of 1 m due to lens magnification m m is lt 1 Hence the total effective beam attenuation factor is 0 25 D mL Since m f L the factor becomes 0 25 D f 0 25 1 Lens f number 5 5 2 Use ofa long focal length mirror Use a long focal length spherical concave mirror worked slightly off axis to reduce the beam diameter to a size which will fit on the camera Sample the beam along its WinCamD Series 85 5 3 Laser Attenuation converging path at a point where it is small enough for the CCD This will inevitably result in some limited aberration of the laser beam due to both the off axis operation of the spherical mirror and its residual surface imperfections 5 5 3 Use of a long focal length lens Use a high quality long focal length lens to reduce the beam dimension As with the mirror the introduction of any optic can change the characteristics of a coherent beam 86 WinCamD Series Appendices APPENDIX A Beam Diameter Definition amp Measurement 1 Gaussian Beams True Gaussian beams have no edges that is the intensity of a perfect Gaussian never actually falls to zero at large distances from the center This arises from the nature of the circularly symmetric Gaussian intensity profile I r he2 Iw a w TW Where ris the radius w is the radius
39. ENUATION OF YOUR BEAM jittesdivaticaaieas tess bena tena bean deai aes iatin ec edaekantnaeein 81 533 ADDITIONAL BEAM SAMPLING ATTENUATION cccceceecccueeeeuueueeeeuueuverseuuuuvenseuuunes 81 5 4 UV LASERS irssi nrrainn aier oaa a a a a a a a a a a 84 5 5 WORKING WITH BEAMS LARGER THAN THE CAMERA cccceeecueeeuuueeeucuenuuvesuuuuenuunes 85 Izi Imaging of the laser beam scattered off a diffusing surface 0145 85 5I Usecof a long focallength TUF OF iss ase eva EET ET SEPET eres E Or i 85 5 5 3 Use of 2 long focal length Atens eeraa aaa aiaa aa EAA E AEREE 86 It is very important to understand this section This chapter addresses appropriate attenuation beam sampling techniques and the measurement of large diameter beams Catalog Optics companies can supply suitable instruments optics and optical mounting hardware to meet most measurement attenuation and beam sampling requirements outlined here Links to Accessories are at the website The notes in this chapter are provided for guidance only DataRay Inc its Distributors and Representatives accept no liability for errors or omissions in these notes Where a recommendation not covered by this chapter is required please fax or email a description of your problem together with a diagram and full laser beam details Cameras are designed to be sensitive to low light levels Lasers are high intensity sources If the beam Irradiance W cm or J cm exceeds the Damag
40. Gaussian appears superimposed over the profile The Gaussian fit is based upon a fit algorithm that whilst keeping the power under the curve constant and the centroid the same as that calculated for the profile iteratively adjusts the height and width of the Gaussian until the Least Squares difference between the actual profile and the Gaussian profile is minimized WinCamD Series Quick Start Tutorial Specifically the steps are Set the centroid position of the fitted Gaussian the same as that of the actual profile Set the area under the fitted Gaussian equal to the area under the actual beam profile i e an equal power requirement If the area under the curve is A and the actual 13 5 diameter is 2W then for iteration purposes the initial Gaussian height is set to H A 2 2W 2 n 1 596 A 2W 2Wua 13 5 2120 2 um 2Wub 50 0 1420 0 um a d G 2W 5 um CO T aaa PIN eit 25 098 ee S a ee a aN scale 600 0 umjdiv Peak 62 6 6B 0 0 7a The least squares fit iteration starts from the actual 13 5 diameter G 2W is the calculated diameter of the least squares fitted Gaussian 1 596 A G 2W is then the calculated height of the least squares fitted Gaussian GFit in 100 x 1 2absolute differences Gaussian profile area CI Show Max amp Standard Deviation A vertical red line appears on the graph at the point of maximum deviation of the profi
41. REQUIREMENTS ccccscccucncoucuccoucuccaucnecausnecausscoucustousnssauenesas 21 2 3 INSTALLATION 2929992902908 AEETI E IIE 21 2 3 1 Software Installation Instructions cccccccsccncnucccceecnnccseneennusuenseunusuenngngs 22 2 4 MOUNTING THE HIEAD aiergitiere iia Maliee ieee e e e e edad as 23 2 4 1 Connecting the Camera HeaG iscsi dissed ina tina tia dias dina a tian a aa 23 25 SOFTWARE IN PE ACTIN Ga E EEEE EEEE EET 24 2 6 FIRMWARE UPGRADES aea Bue eee ye a yay Lanai oe 25 OGTICK START TITOR TAC cis TE EE A T E E sh iackaanieass 27 3 1 MATN S ERE EN Ta EEEE E EEA E 28 3 1 1 Stare Me SO ONITE aAA ES 28 cS Pa Examine PrAVIOUSIV Saved DUG rrie eniras SEEEN EA EAEE ENEN 29 3 1 3 MANN SCLC TODT aE E 30 3 1 4 Main Screen Left Hand Side crestint irata a a teenie ante Aes 31 el ro Main Screen Profile DISDIay cu 32 3 1 6 M lli Screen BOOM IMCs test sta stone eae aye ae ay ae ay ra E E kS Ibiri 33 Fals Main Screen 2D and 3D Display Area ssssssssnnssssnrensnnrnssnrrnrnrrnssrennna 33 3 2 MANIPULATE THE IMAGE AND PROFILE ANALYSIS ussscccccnuccuccenccnnusneusseuseanussnusnaunns 35 Sidi SD DISpiay MaNMiDUlAtlONn E Aar razor eiasduostees eases rei auas nar onos e299 4 35 3 2 2 Choose a Beam Width Definition cc ccicccccccccccncnuccccenennesuenseunusuennennnnnnngn 36 5 2 9 Set DiameterDisplav MOI Cina EEEE 38 3 2 4 SCD aSS Fal cece sect ed seat eee et cetera oe oe uae oe utente a oni lou ato cd 39 32I Change PONI DISP AV oerrinne E E E 41 3 2 6 Pull d
42. Setup pull down menu Enter Parameter Dialog x select Set ISO clip level to open the Enter Boe Dialog Sai ISO clip level in percent 1 02 to 5 02 shown In our experience the 20 default 2 works well To stay Strictly with the ISO standard for a pure Gaussian set the value to 1 Cancel to include 99 of the energy WinCamD Series Quick Start Tutorial but if you have any problems with noise the diameter values will deteriorate quickly To choose the area based option go to the Setup pull down menu and choose Use ISO 11146 compliant diameters and orientation On a pure Gaussian the change from 2 to 1 led to an 0 73 increase in the measured ISO diameter See Section 3 5 of Appendix A for Beam Diameter definitions For a broader discussion on Variance see Appendix A Sec 4 LU Beam Geometric Angular Divergence Enter a Source to Image distance in mm Remember that the camera chip sits 7 5 mm below the surface of the camera body See Sec 1 5 specifications Check Enable Angular Divergence Choose the unit of measurement Click OK At high angles errors may arise due to cosine irradiance effects The software can automatically performs a cosine for the default line profiles or a cosine correction for Use effective slit profiles the data to allow for the use of a flat measurement plane to measure a spherically diverging beam Option No Cos theta correction is applicable to Polarcam development
43. Single Shot and Refind camera s The G button starts the capture of images by the head or press F1 The S button stops the capture of images by the head or press F2 The 1 button initiates single shot capture of images by the head or press F3 The R button refinds the attached camera s B Lock Baseline Large beam measurement The padlock style Lock and Unlock buttons allow you to Lock the baseline This allows the measurement of beams which overfill the sensor and are therefore too large to allow the determination of a good zero level while the beam is on the camera First with the beam on the camera uncheck auto 20151 is exposure p 3 39 Then block the beam and click _ We si0 mya ie on the Lock padlock style button Then unblock y the beam The zero level from which clip levels are 2 mp a am determined will be now be based upon the level ri rrp determined while the beam was blocked In the A example shown because the left hand profile edge F i S T T is above 13 5 that clip level shows 0 0 um Obviously if beam wings are absent second aan Peaks BE BS moment 40 widths calculated for such a beam are invalid To disable this feature click on the Unlock button 56 WinCamD Series Quick Start Tutorial To normalize the 2D amp 3D displays to 100 click the left hand button c Does not work on recalled files must have been set on before
44. WinCamD Series Laser Attenuation Does not change the Damage Threshold in W cm for either CW or Pulsed lasers Does change the Saturation Level in W cm for CW lasers Does not change the Saturation Level in J cm for Pulsed lasers unless the pulsewidth is greater than the minimum electronic shutter period of 40 us 5 2 Attenuation of Your Beam a Using a suitable calibrated Power or Energy meter measure the laser beam total power P Watts or energy per pulse E Joules preferably at the point at which you wish to measure the beam profile b By viewing the beam on a diffuse screen or by using an IR Display Card or IR viewer for IR lasers or by calculation or by some other means estimate the laser Beam Diameter This dimension will be assumed to be the 1 e diameter estimate denoted as 2w If you are using a lens or a microscope objective to magnify or demagnify the beam onto the WinCamD then the beam diameter will vary as magnification M and the irradiance will vary as 1 M This dimension should be less than the dimensions shown in Section 1 7 If not go to Section 5 4 c Go the graphs in Section 1 6 If your beam is less than the saturation limits then no further attenuation is required If it is above the limits carry on reading d Calculate any Additional Attenuation required Pay attention to units 5 3 Additional Beam Sampling Attenuation Choose between the beam sampling attenuati
45. Y Auto Trigger where no formal laser synchronization occurs Q Synchronized mode useful if the laser provides a trigger output or input The sections which follow explain these modes In order to access the Trigger Setup dialog right click on the trigger delay box located below the 3D area Trigger off delay 0 000 ms 4 2 WinCamD Series UCM Trigger Setup f Trigger i Off f Auto Trigger On Exposure setable f External Trigger Enabled Exposure setable Trigger on Positive Edge else negative Trigger Output Enabled Trigger set to off Input Response Limits in percent Cancel Capturing Pulsed Lasers 4 3 Auto Trigger Mode oe Trigger aui n Trigger delay 0 000 ms WinCamD automatically captures and display pulses that lie within the intensity limits set by the user Auto Trigger is attractive to many users of a WinCamD Series It works well in many circumstances Auto Trigger may require some trial and error experimentation to get consistent results It may require a level of knowledge of what is good data based upon a level of experience with the WinCamD and the laser being tested Even if your laser driver provides a TTL trigger output or accepts a trigger input try Auto Trigger before going to Section 4 4 a Auto trigger is totally ungated and untriggered with a simple upper and lower intensity level criteria to Accept or Reject images each time a frame is captured b
46. a is connected to a USB 1 1 port or there is any problem with your USB 2 0 port e g low current the LED will change to Red and stay Red WinCamD Series 23 2 4 Installation 4 If you have a TaperCamD series camera press Alt S to reach the WinCamD Capture Setup dialog and enter the appropriate PMF value in the WinCamD capture screen TaperCamD UCD12 Pixel multiply factor 2 25 TaperCamD20 15 UCD23 Pixel multiply factor 2 27 Congratulations You have successfully completed installation Problems Reread the instructions carefully and start again from scratch If you are still unsuccessful contact Technical Support 2 5 Software Interfacing For interfacing to LabVIEW Visual Basic Visual C etc we provide the source code and an Interfacing to DataRay OCX Software application note at the website Always ensure that you have first tried doing what you wish to do in the standard software If something does not work include your code in any email communication Contact Technical Support as necessary In c Program files DataRay you will find the following files DataRaySource zip includes the source code datastructs h describes the definitions used in the Active X interface LabView DataRayOcxToVI doc DataRayVi JPG amp DataRayViop JPG show examples of LabView interfacing You wil also find example VI s at the website Tiff h describes the structure of the Save current data as TIFF image file VBStuff
47. aRay directory where you originally installed the software 3 2 8 Device OQ Select the hardware that you are working with O WinCamD DualCam Compare displays the Palettes Average Filter Cz results from two cameras on a single screen _ BeammScope P7 P8 BeamScope P P8 D Scan BearmMap Classic BearmMap C BearmMap Collimate wa Beam R Aan v WinCamD WinCamD DualCarm Compare WinCamD Series 49 3 2 Quick Start Tutorial 3 2 9 Palettes Select the palette that you require 0 High color palette is whatever your PC supports Q Monochrome palette is whatever your PC supports Q 32 color palette is precisely that E 10 color palette is precisely that On a normalized 2D image see page 3 31 these will be 10 contours Tai Average Filter w High color palette Monochrome palette 32 color palette 10 color palette Ink saver Q Ink Saver mode changes the black and blue black background the lowest 2 of the levels after background subtraction to a white background This does what it says It saves ink when you print and minimizes that soggy floppy paper feeling 3 2 10 Average Opens the Image Averaging menu Choose either a running average based upon a specific number Average 5 to 20 of profiles or choose Continuous accumulation averaging of the profiles An averaging mode indication will appear in blue on the profile graphic The displayed results are derived from the a
48. abled data only Else All data is logged OK i Show example 2 Cancel Selective logging As a default all if displayed results are logged To log Pata Logging Control f Status Eok only data that is Enabled in the Status Pass Fail parameters box File Number l Samples 0 accessed by clicking the individual results boxes see right select Log Raay enabled data only s etup Log Click OK to return to Data Logging Control amp Status The rest of the l buttons in the Data log dialog are self Recall Log file explanatory Logged data is saved as log text files which may be exported into Microsoft Notepad using Show log file as text and into Microsoft Excel using Convert to Excel See examples below Pass Fail parameters Ed Parameter P Logi log Notepad UW WinCamDWidth_at_Clip_1 File Edit Format View Help enema PataRay Log File version 4 0 PP Started Thursday October 03 2002 at 13 30 10000000 um sample Time In Seconds u_wincamb_width_at_clip 2 0 3047 998 1717 625 0 958 0 300 3098 378 L Limit 3 0 3059 283 1770 426 0 961 0 330 3074 842 Wer LIM 1 2 S 5 4 0 3044 777 1738 533 0 958 0 315 3081 368 JO 5 305E QRO 1771 SSR A QSA A BNF BNF 75A 1000000 0 um Quick Start Tutorial Graphing in Excel If you are unfamiliar with graphing in Excel please see the Graphing in Excel application note at the website which will take you through the basics
49. aiting WinCamD Series 75 4 3 Capturing Pulsed Lasers 4 4 External Trigger Mode In this mode WinCamD captures and display pulses by laser synchronization Caution should be exercised once a triggerable laser is connected to the WinCambD The laser could trigger from the shutter signal immediately the camera is turned on a Ctrl T opens the dialog box l Select either External PUW BDE Trigger Enabled Exposure settable b Isolated Pulse Triggering f Trigger is Off For some users e g doing fusion experiments single C Auto Trigger On Exposure setable pulse triggering on the first incident pulse is required f External Trigger Enabled Exposure setable For these applications the trigger pulse must arrive At Trigger on Positive Edge felse negative 40 us to 20 ms before the laser pulse The Trigger Output Enabled Trigger set to off exposure must be set gt At In such cases with WinCamD Input Response Limits in percent use Direct Trigger Input no locking The camera to 90 4 will trigger on the single TTL input pulse and will also indicate on screen how many l Cancel pulses have been received Set Trigger is input c Pulse Train Triggering Set up the dialog box in accordance with the trigger characteristics Source Repetition Frequency optional currently does nothing and maybe deleted in a future release d The BNC on the WinCamD head can be configured as an input or output s
50. and disable enable it By default the grid is centered on the 0 0 center of the sensor To change the zero point of the grid select Xu in the toolbar click and drag the light green target to the position that you choose and then click Load Current Xc Yc in the Setup screen Then click Xc to reposition the green target on the beam 5 The beam centroid bulls eye is by default light green color 0 9 mm diameter and 1 pixel wide centered on whatever is the current centroid position In the setup screen you can change centroid bullseye color diameter and line width in pixels and disable enable it 6 The Target Match Indicator has a default setting of 10 0 um In the setup screen you can change the Pass Fail criterion in um and disable enable it The text tells you Offset Radius xxx x um limit xxx x um When the match is within the criterion the text is green When outside the criterion the text is red Questions Contact support dataray com 102 WinCamD Series A Absolute position 31 Accuracy 90 ADC 8 Angular Divergence 37 Attenuation 79 80 Auto inclusion region 33 Auto Trigger 74 Averaging 50 Profiles 50 Results 50 Reset button 50 B Background subtraction 57 Baseline lock unlock 57 BNC 20 71 Beam Acquisition Measurement area 17 Angular Divergence 37 Attenuation 79 Fit algorithms 42 Power Limits 12 13 17 Sampling 82 83 Select from stored data 37 Wander 62 Width Def
51. aractestbe A 79 5 1 MIP O Rae TERMS ae ate ca RN Te A a ane lane tata wt Sater tanta ata cea 80 5 2 ATTENUATION OF YOUR BEAM ccaceutuaueunenwteenneseneneeuiundaunneaneouneeuinmveneNndeuneauRWaWnes 81 5 3 ADDITIONAL BEAM SAMPLING ATTENUATION ccccecsccscuvecscuseusetseueuuestsusuusenseusauses 81 5 4 UV TASER Gut ine a ia be a eea Ghee nie a e unin a a Miners iat ellie 84 5 5 WORKING WITH BEAMS LARGER THAN THE CAMERA ccceeeccceeeeeeeeeeeeeseeaanneeeeeneeeees 85 5 5 1 Imaging of the laser beam scattered off a diffusing surface ccseeeaes 85 per 4 Use Of a iong focal length MITON sssr ris nir ron r EER 85 D3 Jseola long focallength Iens asiaa a A E A RT 86 APPENDIX A Beam Diameter Definition amp Measurement 87 APPENDIX B Accuracy Precision amp Resolution 90 APPENDIX C Support Returns Distributors Reps 93 APPENDIX D Importing TIFF files into MatLab 95 APPENDIX E Spatial Response Variation Compensation 96 APPENDIX F Windows Vista Installation amp Use Issues 99 APPENDIX G Multi Beam User Guide 100 APPENDIX H Grids and Targets 101 INDEX 103 Introduction CHAPTER ONE INTRODUCTION 1 1 WELCOME i ica 0h ed EEEE EEr Eoi E e i eei ei 7 1 2 PBOUT WINCAMD SERIES vas cscussauaveraraenadananauns ands ia aeaae ana an anauananawanawemanauanannene 7 1 3 SYSTEM CONFIGURATION amp DESCRIPTION w ccseccveecuuveeuuueeeuuueeeuuveneuuvenguueesauuensuuues 8 1 4 SU RT IN se een cae ewe wae een ee ev as ee ew eee ne ee og ae eee ene eee 9 1 5
52. arest neighbor intensities sums them divides by 9 and places the result at the center pixel location WinCamD Series 51 Quick Start Tutorial 3 2 12 Camera Selects the camera to be used If only a single camera is attached it will automatically find that camera If more than one camera is attached it will default to the first camera on the list For any other camera you will need to manually select it Alt N selects WinCamD cameras Shift N selects WinCamD U cameras Use all USB cameras sets all connected USB 2 0 cameras to capture images in parallel e g when triggered by the same trigger input pulse Individual captured images are stored in the individual camera buffers and are then read out into the software buffer in a serial manner See page 3 32 for how to scroll through the image buffer There are subtleties to using multiple cameras See the Multiple_Camera _User_Guide Application Note at the website Camera View Centroid Setup w Auto select camera default ALT O 3 2 13 View Allow you to select what is occupying the screen Some options may be grayed out if they are not available for the system that you are using Open Close Log Dialog does that Open Close M2 Dialog does nothing USE Camera 1 SHIFT 1 Show Non uniformity is now accessed by right clicking on the profiles area Open M2 Dialog does that Use all USB cameras 52 WinCamD Series Quick Start Tutorial 3 3 Setup
53. beam centroid positions These are determined using all pixels in the image above the specified level The default is 13 5 See Section 3 3 for how to set alternative levels When Xp Xg or Xu are selected the display changes accordingly 0O O is the center of the array Toggle Centroid button absolute or relative toggles between Absolute centroid and Relative centroid Pressing z or a on the keyboard gives the same result Selecting z resets the relative centroid 0 0 to the current centroid position WinCamD Series 31 3 1 Quick Start Tutorial Peak xx x is the image peak level as a of the ADC range determined as the peak value for the average of any L shaped group of three pixels within the image It represents the raw level calculated before any background subtraction Image zoom N is the current 2D screen zoom 3 1 5 Main Screen Profile Display 32 2Wua amp 2Wub These are the line profile widths at the Clip a amp Clip b levels Zero level First note that the zero level is a three pixel wide line The center is the actual zero set by the software after subtraction of the baseline The line is set five pixels above the graph zero so that negative noise remains visible zWua 5020 um 2Wub 2694 um scale 1200 0 pimjdiv Peak 95 4 B 1 1 The zero level is calculated by taking the maximum filled level of the histogram of intensities below 25 of peak Default mode is baseline subtraction T
54. beam diameters have been measured at the 1 e intensity point i e at 13 5 of the maximum intensity For the reason outlined in section 2 2a ISO 11146 mandates the use of a Second Moment definition of beam diameter 2W z 2V2 0 z 12 where the variance o7 z is calculated as E J r I r Z r dr do p r o z dr dd 13 o z Where I r z is the radial intensity distribution versus angular position along propagation axis Z In more useful x and y terms since these are what actually get measured E R a a I x y Z dx dy 2 2y 2 I x y Z dx dy The rotation angle gis given by 20xy ox oy 14 x y denotes the centroid of the I x y z intensity distribution The ISO 11146 standard actually terms the quantities E x y z rather than I x y z and d x Z amp d y z rather than 2W Z amp 2W Z Here we have used the more familiar terminology rather than the less common terminology used in the ISO standard 88 WinCamD Series Appendices For a pure Gaussian intensity distribution the second moment width is identical to the more familiar 1 e 13 5 of peak intensity width There are a number of potential disadvantages to the use of second moment as a beam diameter definition none of which are insurmountable in a well designed system a Unless the results are gathered and processed automatically the second moment diameter is non trivial to calculate It is not
55. can vary the CCD gain up to 5 1 7 14 dB optical electrical Use of gains gt 1 lead to lower SNR Signal to Noise Ratio 4 1 Terms and Features Synchronous Camera Trigger The camera is triggered by a TTL pulse from the laser Synchronous Laser Trigger The laser is triggered by a pulse from the camera Exposure Electronic Shutter The light falling on the array leads to a proportional integrated signal while the electronic shutter is open Be aware that the terms Trigger Gating and Capture can sometimes be used interchangeably and sometimes imply different things Trigger strictly implies that something happens as a result of some input Gating implies that the presence of something allows something else to happen Capture is the act of capturing a pulse PRR is the Pulse Repetition Rate of the laser WinCamD Series 71 Capturing Pulsed Lasers SNR is Signal to rms Noise Ratio Progressive scan WinCamD Series uses Progressive Scan where the imager is read out as a continuous sequence over the range of interest The frame rate is frame size and resolution dependent Q The electronic shutter opens once per frame The Exposure time integration time can be changed in small steps from 0 040 to 1000 ms Q Imagers perform energy in a bucket integration All photo electrons pulse s plus background incident within the electronic shutter period is integrated An ideal situation is that a single laser pulse falls w
56. cccscsscccceeccnnnneeeeennaneeeeennanteenennannees 67 3 6 2 SIUN G Dest iat ieseriai resi eerie ee bra 67 3 6 3 Artifacts and Cleaning of the ND filter amp Imager chip w ccesssccceeeennnneeeees 69 3 6 4 TaperGamD Al Glas crise eect ete peel eerie l eee deed oye tla 70 WinCamD Series 27 Quick Start Tutorial Do not just read this User Manual Do sit at the computer and try out the software OQ Unfamiliar with the hardware or just evaluating the software Start at Section 3 1 LY Familiar with the software but never used the hardware Go to Section 3 6 3 1 Main Screen 3 1 1 Start the Software Double click the icon to start the software See Chap 2 if software is not yet installed In the pull down menu under Device select WinCamD WinCamD main screen shown below appears The software automatically detects the camera type Below we identify the 2D Image 3D Image Area and Profiles Area The screen appearance will change slightly depending upon you screen resolution The required minimum is 1024 x 768 H x V DataRay v6 00R11f Live WinCamD 0 of 0 WI 0 0nm 4 96 Xo Xp xu F O1 BSIDMIXYBLIO Sgrn hh Bi 4xSigmaf a Clip b 50 0 2W_Major 0 0 um 2W_Minor 0 0 um 2VWV_Mean 0 0 um Eff diam 0 0 um Ellipticity 0 00 Orientation 0 0 deg Relative Power 0 00 Full a 2 Trigger off delay 0 001 ms Imager Gain 1 0 4 r Crosshair 16 5 deg lt 0 0 um Peak 0 0 Image zoom
57. d for all pixels with level above the centroid clip level Currently the level may be set between 5 and 90 If you try to set higher or lower values it will default to 13 53 without warning you Centroid clip level in percent Enter Effective Width cliplevel allows precisely that Set geo centroid cliplevel allows precisely that for the Geometric centroid Setup trigger See Chapter 4 on Pulsed Lasers Jitter suppression Inoperative Will be grayed out in a future software revision Duo vo DO Enable auto naming A name will be suggested in the format WC_YY_MM_DD_HH_MM_SS 3 3 WC followed by the date amp time 24 hr clock read off your computer s clock UO Use ISO 11146 compliant diameters and orientation calculates 4o diameter amp beam orientation based upon analysis of the whole image rather than simply the line profiles along the crosshairs See Appx A for equations UO Enabled d63 calculates beam major minor amp mean d63 diameters in mm amp area A63 mm 2 about the centroid containing 63 of the Default Major Minor method total energy in the beam Per Tee TOO 2 e TR the requirements of IEC 60825 Use I50 11146 compliant diameters and angle l v Enabled d63 Entering the tota beam power as measured by a calibrated power meter gives the power 463 major 1 06 mm P W in A63 and the irradiance 163 W cm2 2WmajorSO 1559 1 um 2WminorlSO 1591 3 um ELP 0 1 deg SUPPORT pull down menu see Append
58. e Threshold Minimum signal unit area which causes damage of the camera irreparable damage may result If the laser beam Irradiance W cm or J cm exceeds the Saturation Irradiance Saturation signal unit area of the camera a saturated image results If the beam overfills the active area inaccurate measurement of the beam will result Typical attenuation factors required between laser beam and camera are factors of 10 to 10 or more ND5 0 to gt ND10 0 WinCamD Series cameras feature as standard 7 UY ND4 0 attenuating filter LDFP Low Distortion FacePlate set at 3 to the optical axis in order to avoid interference fringes See page 1 7 for ND4 0 transmission WinCamD Series 79 Laser Attenuation Q Electronic shutter giving effectively ND4 5 45 dB or 32 000 1 for CW beams O Imager Gain variation for Pulsed beams This makes achievement of the required levels of beam attenuation as simple as possible but it is still important to understand what the considerations are and how to address beam attenuation and large diameter beam measurement Ambient Background Attenuation Although the WinCamD_ software offers background subtraction for best dynamic range and SNR it is better to reduce the ambient background to black level on the camera Measurements under typical lab conditions require a reduction of the ambient level of around 10 000 The ND4 filter provided with WinCamD cameras provide suitable levels of ambie
59. e before moving the camera head a large distance You may hot plug and un plug the camera head while the software is on If you continually move the head around with the cable attached drag on the cable may cause the connector retention shell to bend and weaken Mount the head in a rigid manner such that the head will intercept the laser beam in a plane perpendicular to the beam axis It often helps to install the head or the assembly to be measured on an XYZ stage If you have not already done so read this manual If it is the first time you are using the software but have been experimenting with the settings go File Load defaults to reset the software to its defaults To start taking data press g on the keyboard or click on the Go or Ready button The defaults include auto exposure The exposure will be set to 1 ms initially and then automatically adjust for your beam in the range 40 us to 1000 ms The defaults set the Inclusion Region image size to 1024 x 1024 and fast mode Enter Alt S to enter the setup screen and change the values in accordance with Section 3 3 WinCamD Series 67 3 6 Quick Start Tutorial f g h j k 68 Once the beam is set within the image area the readings will be accurate and the profiles may be analyzed as discussed throughout the earlier in the chapter When you close the software it will automatically save the settings that you were using when you exited To save an al
60. e profile in the profile area in which the cursor lies press c for Center on the keyboard Pan profile In order to pan the profile in the profile area in which the cursor lies press P for Pan on the keyboard and the current cursor position in the profile box will be centered in the window E g place the cursor to the left of the profile and when you press p the profile will move right Pan image In order to center a part of the image in the image area place the cursor on the part of the image that you wish to be centered and press p for Pan on the keyboard In live mode only and if the Capture Block is less than the maximum for your camera if you have a center wheel on your mouse click and hold down the center wheel and drag the image under the cursor to where you want on the screen Measure any distance on a profile Click and drag a line between two features in the profile in order to determine the horizontal distance between these features This is shown as Dist xx x wm on the bottom left of the table below the profile Left click in the profile area to delete the line and the measurement 3 2 6 Pull down Menus File Device Palettes Average Filter Camera View Centroid Setup sese Support The majority of the pull down menus are only applicable to live sessions but it is important to take a look at them and read the brief description to understand the versatile and intuitive nature of the s
61. ed in the current version please contact us Many requested software functions can be added with relative ease and may be done for free and added to future releases If the requested enhancement is extensive and or obscure we reserve the right to quote a fee for the requested change We are committed to providing the ultimate in beam imaging performance and welcome constructive criticism of these products and of this manual Please contact us International Organization for Standardization ISO 111146 Test methods for laser beam parameters Beam widths divergence angle and beam propagation factor www ansi com 1 2 About WinCamD Series WinCamD series are state of the art real time port powered USB 2 0 cameras optimized for beam imaging They use high resolution progressive scan CCD amp CMOS chips with small square pixels Most have window less field replaceable imagers The CCD chips are directly addressed via customized FPGAs amp off chip 14 16 bit ADC s The CMOS chips have on board RAM FPGA amp USB 2 0 processor amp on chip 10 bit ADCs WinCamD Series 7 1 1 Introduction Coupled with full auto exposure on CW lasers you know that you are always getting the best possible Signal to Noise Ratio on your beam without any effort on your part The FULL mode captures every line The default FAST mode bins adjacent lines and adjacent pixels creating a single effective pixel from four adjacent pixels The size of the
62. el size were infinitely small It then makes the same determination for the right hand side of the full profile The difference between these two interpolated position values determines the diameter for the specified clip level Since these interpolated values are not quantized by the pixel location the measured beam diameter is not quantized by the pixel size Smallest beam size Understanding this inter pixel intensity interpolation leads to an understanding that accuracy will degrade as we move to smaller beams The profile of a 100 um Gaussian beam shows well that even with 4 65 um pixels the 2Wva 13 5 99 6 um O ee Scale 17 5 umfdiv validity of linear interpolation starts to break down as we go to smaller beams This is because the two adjacent pixels start to lie on a curve rather than a straight line segment WinCamD Series 91 App Appendices It is for this reason that the normal advice is to use a smallest beam diameter limit of about 10 times the pixel size DataRay errs on the conservative side and suggests limits of 50 um for WinCamD and 70 um for WinCamD UCM A user may choose to measure smaller beam diameters but should be aware of these accuracy limitations 4 Second Moment Diameter The Second Moment Diameter of an image is based upon an area integral weighted by the square of the distance from the beam centroid As such it does not include a specific clip level See Appendix A for a full desc
63. ents 21 Peak Irradiance 79 of ADC Image 32 of ADC Profile 32 Percentage Fit Gaussian 42 PMF Pixel multiply factor 54 Power Bar 64 Limits 12 13 17 Maximum 13 14 21 Relative 64 Precautions 67 Precision 90 Print 49 Print Setup 49 Product Registration 19 55 Profile Averaging 60 Center 47 Clipboard to 49 Colors 50 Filter 51 Gain 32 Gaussian fit 42 Grids 42 Linear 41 Measure distance 47 Logarithmic 41 Normalized linear 41 Pan 37 Scaling 32 45 Smoothing 51 Widths 32 Zoom 29 Pull down Menu Bar 30 Pull down Menus 47 Pulse Pulsed Pulses Lasers capturing 71 Repetition Rate Definition 71 Saturation limits 13 17 WinCamD Index Q Quick Start Tutorials 28 Hardware 67 Software 28 R Registration 19 55 Representatives 93 Resolution 90 Results averaging 50 Returns 93 Rotate Image 180 degrees 53 S S Stop 56 Safety 67 Sample Data 29 Saturation Power Limits 12 13 17 Save As 48 Scale Profile 31 Screen Dump to Clipboard 35 Second Moment Beam Width 36 88 Setup 53 Short Cut Keys 66 Single shot 56 SNR 9 Software Interfacing 24 Installation 21 Quick Start Tutorial 27 Upgrades 21 55 Specifications 10 Starting Up Hardware 69 Software 28 Support 55 93 Synchronous Trigger Definition 19 T Index Targets 35 101 TaperCamD Artifacts 71 Compensation Files 96 Outline amp mounting 11 16 Pixel multiply factor 30 53
64. er bar function gives an indication of relative power as Enter relative power and label x a scrolling ten sample histogram The power is calculated as the integral of the energy in the MALAME MG les x image at a fixed exposure Enter animation pernod in senconds 0 0 to 100 0 It is not a calibrated power meter Click on the bar to open the dialog box shown Enter the power as measured by a calibrated power meter and the unit of measurement The power Relative Power 4 37 mf Full Range 10 bar will then display relative to the measurement entered If you enter dB or dBm it recognizes these terms and works in logarithmic mode You may also enter 100 as the number and as a label to give answers in Trigger Delay Trigger off delay 0 000 ms i ti The slide bar is located below the 3D image area See Chapter 4 64 WinCamD Series Quick Start Tutorial Imager Gain Imager Gain 1 0 EE araj The slide bar is located below the 3D image area It is a qualitative not a quantitative illustration of gain i e Gain 1 is greater than Gain 1 but is not necessarily exactly twice as large It offers 5 1 Gain control Exposure control may be accessed by right clicking on the Exposure time area Defaults are shown pamm time 100 0 ms Auto m For faint beams you may Exposure electronic shutter Control uncheck Enable limits to allow longer exposure up to 1000 ms To manuall
65. es Installation CHAPTER TWO INSTALLATION 2 1 UNPACK THE HARDWARE nsassusssnsunnunnsnnnrnnnnrnunnunnurnnrnnnnnnnnnnnnurnurunrnnnnnnnnnunnnnnnnn 19 2 2 MINIMUM COMPUTER REQUIREMENTS ssscccescucvesauuueeuuueeeuuueeeuuuenauuuenauuvenuuuennuunes 21 2 3 INSTALLATION since ase yed biud bias ones vbine pie iiage ade ie nunnunum 21 2 3 1 Software Installation JNSWUCTONS isrsrsrsrsisss trir r EE ENEEIER Daa 22 2 4 MOUNTING THE HEAD sassssansnnnunnunnunnnnnnnnnnunnunnnnnnnnnnnnnnnnunnnnnnrnnnnnnnnnnnnunnnnnnnn 23 2 4 1 Connecting the Camera Hedd iserisrsrrrsrrrriveristsrsnns eee weveus weewe wor EVEEN 23 2 5 SOFTWARE INTERFACING v scccuescuueeeuuueeeucueneuuvenauuuenauueeeuuueneuuuenauuuenauuvesauuuensags 24 2 6 FIRMWARE UPGRADES cuvsvpasepaviaesveecsnerasecsiareeantiasagecieeraepneeoanvieseeiserioersearsenes 25 2 1 Unpack the Hardware Please locate and identify all items ordered If any items appear damaged or missing or you have any other questions please contact us You should receive e WinCamD series camera head with USB 2 0 cable 3 m 10 ft long Cable runs to 5 m are possible or 25 m with booster cables hubs User Manual with Software CD e BladeCam only SMB to BNC adaptor 8 32 to 20 adaptors for North America 8 32 to M6 for Rest of World Now register your product at www dataray com support prodregform html QuickStart in case you are one of those rare people who do not read manuals Load open and cl
66. est bench or when saving the screen data for a presentation Enter Intensity Multiplier opens the box shown which Paie Mile yes lib tas allows you to superimpose a magnified profile over the Enter value to multiply intensity profile with current profile The multiplier may be any integer between T 2 and 200 The legend Profile XX will o appear next to the red UK Lancel profile Show clip levels through Show scale grids allow you to control how busy the display appears Uncheck what you do not need Default is all off When Show clip levels is selected the variable clip levels are shown in blue on the profile You can click and drag the levels shown on the screen Beam fit algorithms Some algorithms follow generally accepted industry practice Some represent specific customer requests now incorporated in the software The Algorithms described here are for Gaussian Fit including GFit G 2W Max Deviation Std Deviation Coefficient and Roughness Top Hat Fit including Max Deviation and Std Deviation Non uniformity Effective Diameter In all modes the software first determines and subtracts the baseline If you need a function that is not included in the current version please contact us TIP On slower PCs to speed up the processing do not show these options E 42 Show Gaussian fit A GFit results line appears under the 2W results and a red line
67. f you are Administrator To quote Paul Thurrot at the URL below Vista downgrades Administrators to regular Users by default in a misguided attempt to enhance security http www codinghorror com blog archives 000571 htm What this means for Installing and Using DataRay software is that everything is as described for XP except that 1 After installing the software right click the DataRay icon select Run as and select your User Name if you are an Administrator on this PC Uncheck the Protect my computer from unauthorized program activity box Click OK Not sure what your User Profile covers Go Start Control Panel User Accounts click on your account name click on Change my account type and verify that Computer Administrator is checked If Limited is checked see your IT Dept 2 The box shown right will appear Click Allow This allows the DataRay software to register its OCX and install the driver File Operation 3 In Device select WinCamD amp then close the software 4 The rest is the same as the instructions for XP Cancel If you do not trust the source do not use this program This program can potentially harm your computer If you get fed up with all these Vista Permission issues at your own risk and with the Sode permission of your IT department you can remove the warnings See e g htt lifehacker com software vista windows vista tip disable annoying need your permis
68. fall on the head Use the curves on pages 1 6 1 7 The following head damage limits always apply Power gt 2 5 x Beam diam in mm W or gt 10 W total may damage the ND filter The limit is lower for pulsed lasers especially ns amp fs lasers Imager chips can take a x1000 overload over the saturation level without damage Q Beware of back reflections from the ND filter Employ appropriate eye protection Imager chip Irradiance limits without ND filter A nm Damage Threshold Saturation Irradiance mW cm mJ cm puW cm uJ cm 355 Few 0 3 0 3 0 01 630 gt 10 0 15 0 005 800 0 1 0 004 1060 10 0 4 WinCamD Series 17 Introduction 1 7 Manual Conventions LI WinCamD Series refers to all DataRay cameras O click select or check always means left click the mouse button OQ double click always means double click with the left button E click and drag means left click on the object indicated hold down the button drag the object across the screen to the desired position and then release the button If a right click is required this is clearly indicated as right click press always means press the keyboard key UO enter means enter using the keyboard 8 pt Verdana Bold indicates keyboard entry items or words etc on the screen e g Enter Alt F S means Press the F key while holding down the Alt key then relea
69. fit Determines the 50 of peak outer edges of the profile Defines the center as opposed to centroid of the beam as the midpoint between these two points Determines the mean level of the central 80 of this region It plots a straight line at this level and defines it as 100 for the purpose of subsequent TopHat fit calculations Shows Top Hat fit in 100 1 Total area of deviations Area under line Show max deviation A vertical red line appears on the graph at the point of maximum deviation and the Max Deviation xx x and Std Deviation xx X are overwritten in red on the graph 2Wua 13 5 1519 1 um 2Wub 50 0 629 2 um TopHat 20 ae ae ee E ae ee ee eee a S S S O S e e T E e l o y a e a Scale 600 0 um div 44 WinCamD Series Quick Start Tutorial O Show Uniformity within Clip A Diameter Found by right clicking on the profiles area Determines the Clip A edges of the profile For the central 90 of this region it calculates the following function in terms Non uniformity 100 Min 100 Min The values displayed on the profile are the values for the profiles shown In the View menu you can also choose Show Non uniformity WinCamD_ only the SE Sy as average non uniformity value taken in 360 one degree slices about the centroid is displayed in the left hand panel o Effective Diameter Effective diameter always shown in the left Eff diam
70. for 1310 nm Part Number component descriptions Complete working USB 2 0 camera system vee Add CCD chip extension to generate Part TaperCamD UCD12 WinCamD with 14 4 x 10 8 mm 1 6 1 FO taper on the sensor TaperCamD20 15 UCD23 WinCamD with 20 x 15 mm 2 27 1 FO taper on the sensor UCD12 CCD sensor for CW amp Pulsed 1360 x 1024 pixels 4 65 um UCD23 3 CCD sensor for CW amp Pulsed 1360 x 1024 pixels 6 45 um HR 2 CMOS sensor for CW amp high PRR 1280 x 1024 pixels 5 2 um XR 1 3 CCD sensor for CW amp Pulsed 1600 x 1200 pixels 4 4 um 1310 Adds 50 mm C mount tube amp long pass filter for 1290 to 1350 nm work Camera with no lenslets 3 mm UG11 filter instead of ND 4 0 UV Works at 260 through 380 nm IR On chip IR to visible phosphor converter for 1480 to 1600 nm WinCamD UCD12 UCD23 Chip surface height standard and options To request a sensor height increment of 4 25 or 8 5 mm add S1 or S2 to the P N E g WinCamD UCD12 S1 There is an additional charge for these options The case hole is 1 30 20 tpi for the S2 and the filter holder accepts C mount accessories on its upper surface WinCamD Series 15 Introduction TaperCamD Series Tapers are fused coherent fiber bundles heated drawn round to rectangular and polished to give an output end the size of the imager chip The image is demagnified M lt 1 from the faceplate input to the imager end NA at the imager end is 1 0 NA at t
71. he input faceplate is a factor of M smaller Individual fibers at the input end are 6 um pitch with a 50 core cladding area ratio Refractive index is 1 81 leading to a front surface reflectivity of 8 3 These taper ends are bonded to the surface of the imager chip These tapers do not transmit in the UV They have low transmission TBA at 355nm Empty filter holders are available for both TaperCam sizes A 0 25 deep extension ring is available with male and female 1 30 20 tpi threads is available for the TaperCamD UCD23 1 0 32 C mount thread NK TaperCamD20 15 UCD12 UHR and UHS PMF 3 1 TaperCamD20 15 UCD23 UCM PMF 2 27 z ND4 at 3 16 7 mm ita 1 30 20 tpi thread 1 0 32 C mount thread 16 WinCamD Series Introduction 1 6 Beam Limits 1 6 1 Beam Measurement Region 6 3 4 8 Y2 UCD12 amp HR Approximate imager dimensions shown actual size 7 0 m t 1 8 XR 8 8 ae 2713 UCD23 14 11 TaperCamD For accurate beam measurement the beam must lie totally within the area shown See spec tables for exact sizes 15 1 6 TaperCamD20 15 For the most accurate measurements on TaperCamD s center the beam fairly well For true 40 Variance measurement to the ISO 11146 standard a Gaussian beam diameter at the 13 5 clip level should be a maximum of 55 of the imager size 1 6 2 Beam Power Limits Measure your beam with a calibrated power meter before letting power
72. he pulse Then a single pulse image will not fully represent the pulse Instead use External Trigger mode below Capture but too low If this message appears in the Ready area it is telling you that a frame was taken but the peak level was below the set Minimum level in percent Capture but too high If this message appears in the Ready area it is telling you that a frame was taken but the peak level was above the set Maximum level in percent vabataay va 00P 4 _Live Wintam 11of 22 There are two counters on screen in this mode In the blue line at the top of the screen the image counter of captured images continually cycles from 1 to 64 In the Ready button area a counter counts the number of times since go was pressed that the software sampled the eA MSAA camera to determine whether an image meeting the Minimum and Maximum criteria has been captured If every image is good then these two numbers will be equal If as is frequently the case not all images are good the count in the Ready button area will increase at a greater rate than the captured image count In addition if there is a difference between the numbers the Ready button will also frequently display the message Waiting For processing speed reasons the update priority on the Ready button is not as high as some other areas of the screen When no image is captured there is more time available for the button to be updated so the message tends to stay at W
73. inition 36 Binary save as 48 Button Bar 56 C 24 Calibration 9 Camera select 52 Cam IR adaptor 20 54 Caption Bar 30 Capture block 54 pulsed lasers 71 resolution 54 CCD Chip height 11 Cleaning 69 Center profile 46 Centroid Averaging reset on drift 50 Beam 31 Clip level 55 WinCamD Index Index Mode 64 Chip height CCD 11 Cleaning CCD ND filter 69 Clear 56 Clipboard 2D 3D Profile Screen dump to 59 Clip Level 36 Clock source 53 Colors 40 50 Comet tails CTE 65 68 Computer Minimum Requirements 21 Compensation Files 96 Configuration system 8 Crosshair 30 56 CTE 65 68 D d63 55 Damage Threshold 17 Data Buffer 57 Examine Previously Saved 29 Log 58 Save to File Select 58 56 Defaults Load 49 Deviation Max amp Std 43 Device Selection 28 49 Diameter Display mode 36 Diffractive Beam Sampler 83 Diffusing Surface 84 Dimensions 9 11 Display Modes 36 Distance 46 Distributors 93 Divergence angular 37 j Index E EAM 2 83 Ellipticity 29 Electronic shutter 67 71 75 Enabled d63 55 Exposure control 65 for pulsed lasers 74 Eye Safety 67 103 Index Fast mode 54 File Auto name 65 Open Save 48 46 Filter profile smoothing 52 Firmware upgrade 25 Flip image 53 Fluence 62 Frame Rate 9 Full mode 54 Functional Description 10 G G Go 56 Gain CCD CMOS 65 Gamma correction 64 Gaussian Angular Divergence
74. ithin the period when the shutter is open and that the background is zero It is therefore important to use a logical procedure to systematically adjust settings to correctly capture beams Consider a laser pulse train A pulse will only be captured when it falls within an open shutter period The pulse train and the imager exposure period must coincide The frame transfer timing pulse reads out all charge accumulated on the pixels essentially clearing the imaging area Q For pulse duration lt 40 us the electronic shutter can only gate pulse capture For pulse durations gt 40 us the electronic shutter may be used to attenuate the background and the beam intensity Q In some capture modes the electronic shutter is left open continuously The charge in each pixel is read out upon request by movement it into the transfer register without closing the shutter The pixel charges are emptied by the readout Imager gain may be increased in order to increase signal closer to saturation 85 of Peak on the ADC is ideal at the expense of slightly degraded signal to noise ratio 4 2 Pulsed Beam Capture Initial Setup Capturing pulsed beams may require some trial and error to obtain the best results WinCamD covers most conceivable triggering options pulse durations and PRRs If you ignore the advice that follows you may damage the camera head and or your eyes a Read and apply Section 3 6 and Chapter 5 for your personal safety
75. ivergence Measurement Zipped Word doc Excel spreadsheet WinCamD Series Laser Beam Imagers User Manual Serial Number Purchased by Date Rev 1207a 1999 to 2012 DataRay Inc All rights reserved DataRay Inc 14505 Seaman Gulch Road Bella Vista CA 96008 USA www dataray com Product Support 1 866 WinCamD 1 866 946 2263 x702 From outside USA 303 543 8235 e support dataray com Table of Contents INTRODUCTION erasi oa sicacsaessoa a see sea dee heatineasee sa wesseo vice araa Z 1 1 WELCOME oaea ERO EEE ESR ERO EE a a RS ERR EE eR 7 1 2 ABOUF WINGAMD SERIES ests isestes EATE ETEA O E A EUEN a ee Z 1 3 SYSTEM CONFIGURATION SC DESCRIPTION sss i555 45 05 ie Ue as BaP 8 1 4 BY 8145 27 9 eee eee eee etna Ceara reese ne ate een near eee Tae ae aA a A 9 1 5 WINCAMD SERIES PRODUCT SPECIFICATIONS visccuccccnucccenuceneuuseseuuseseuusnsuuuenenunsnens 9 1 6 BEAM EIMIVS maniso niaaa ENE EEE EE EEEE EEE EE E 17 1 6 1 Bean Measurement REON sss s2cccecssesssoss sass sess sass sass sass sausseesseessoessones 17 1 6 2 Beam Power LiMitS pips acs ius oases sep sia vip via np sea va sin va een oa een dn ein sa tis sa den ee Me sa dp ep aes wa ds wae 17 1 7 MANUALE CONVENTIONS crseesscicer serait yi a aaa aa Rg a ae a 18 1 8 MANUALE AND COPYRIGHT NOTICE os Be Se a Be a BJ a Ne a Le 18 INSTALLATION hia oe a Oi ee i ee a a eo ee 19 2 1 OUNPACK THE HARDWARE octet etl eat e gta ct See to Sc teil a a a a ty 19 2 2 MINIMUM COMPUTER
76. ix C Ellipticity 0 98 3 4 Tool Bar t Wx xx xu N F S Oil PiBSIOMBXYELIOHD EEJ S SBgrM naea NE WinCamD Series 55 Quick Start Tutorial The Toolbar Button bar functions provide quick access to many items Grayed Out Some buttons are grayed out until you press Stop Some will be grayed out if they are inapplicable to your Device or to your current mode of operation a ale Clear Open Save These three buttons in order Clear the data from the screen and Open and Save files Select the centroid mode to determine the X Y position of the xc xa xp xul intersection of the crosshairs within the current Capture Block or the Inclusion Region p 35 if selected Xc the mathematical centroid for all points above the level set in Section 3 3 Xg the geometrical centroid for all points above the set centroid level It is the center of all the beam above the Clip a level with no intensity weighting Xp sets the crosshairs on the peak in the profile Xu allows the user to place the crosshairs Use the arrow keys to move it in single pixel increments N E Normal amp Fast Mode N amp F allow display in Normal or Fast mode When the N button is grayed out you operate in normal mode standard amp user requested calculations are performed for the beam This limits the speed of the screen update Select F to tell the software to simply update the screen as fast as possible Gc 1 R Go Stop
77. lace it in a temporary directory named e g c Downloads WinCamD Series 21 2 2 Installation In case you need to return to an older version of the software rename any old Dataray directory as c Program Files DataRayxyyz where x yyz is the version number found on the top line of the opened program E g c Program Files DataRay500S8 for Version 5 00S8 2 3 1 Software Installation Instructions These instructions assume that 1 2 3 4 5 You are reasonably familiar with Windows amp are running Windows 7 Vista or XP amp using a PC that meets the minimum requirements listed in Sec 2 3 of this manual Start your PC Avoid potential but unlikely installation problems by turning off programs running in the background e g Anti virus software Instant Messenger automatic fax reception etc To date such programs have given us no problems Insert the the CD in the drive assumed drive d It should AutoRun If it does not go Start Run Browse to d iDataRay exe and press Open and then OK If installing from downloaded software in Windows Explorer from c Downloads or whichever temporary directory you put the software in double click iDataRay exe to install the software Install the Driver as follows Open the software This should install the driver In the Device pull down menu select WinCamD Close the software Connect the camera Plug the camera into a USB 2 0 port Follow thr
78. laceable but at customer expense 5 TaperCamD series Go Alt S set Pixel Multiply Factor to rear label value You may hot plug and unplug a camera head from its cable The software should recognize it automatically after a few seconds If it does not restart the software Centering Stay within the imaging area for accurate measurements If energy spills outside the imaging area erroneous measurements may result Save files for future reference Press Stop then in the Pull down menu go File Save Save current data to save the single profile image set or Save all data in data buffer to save a sequence of data particularly if you are seeing instability The saved file wef format includes setup data for your instrument Anyone other PC can then display the data exactly as you see it Help us to help you If you are getting strange results e g corrupted screen layout press Stop In the pull down menu go File Load defaults to reset to default settings amp or restart the software If the problem persists before you report it save a wef file see above amp email it to support dataray com or to your distributor with your commentary Then call See also Solving WinCamD Issues amp Remote Support User Guide at the website By default all BladeCam amp WinCamD s come with the sensor window removed See Sec 3 6 3 for instructions on cleaning the ND filter amp in extremis the sensor chip WinCamD FIR serie
79. le from the fit and the Max Deviation xx X and Std Deviation xx x are overwritten in red on the graph Deviation is defined at each position on the profile relative to the fitted Gaussian curve or to the fitted Top Hat line depending on the fit chosen i e at position j on the profile if the Gaussian level is Gj and the profile value is Pj then the deviation at that point is defined as Deviation in 100 Pj Gj Gj E G If Pj Gj the Deviation is 0 If Pj 2 Gj then the Deviation 100 Therefore the Deviation value can be gt 100 and as low as 100 Max Deviation is the maximum value positive or negative of the Deviation WinCamD Series 43 3 2 Quick Start Tutorial Std Deviation is calculated over the fitted region using the Deviation values as calculated above O Show Coefficient amp Roughness Additional information is given by the alternative Gaussian Fit Coefficient and the Gaussian Roughness coefficient defined as follows Find the average difference between the Actual point Pj amp the fitted Gaussian Gj A gt Pj Gj N N is the of points For each point determine the difference Dj from the average of the deviation Dj Pj Gj A Determine the sum of Dj S gt Dj Determine the Gaussian Fit Coefficient C 1 S N N Determine the Gaussian Fit Roughness R 100 x Max Pj Gj Max Pj O Show Top Hat fit The Top Hat
80. ll when they have been removed Some air duster fluid can leave a film so keep the can upright do a test spray to one side first and bend the nozzle if the angle is awkward Damaged chips can be replaced but at your expense 600 for standard chips higher for IR chips Q Do not touch the surface of the chip QO Do not blow directly on the fragile bond wires Imager chip destroyed Most cameras have user replaceable imager chips Contact your local Rep Distributor or support dataray com WinCamD Series 69 3 6 Quick Start Tutorial 3 6 4 TaperCamD Artifacts The following are inevitable consequences of the use of fiber optic tapers If you the customer find these artifacts to be unacceptable in your application you may return the unit for a full refund but not replacement within 30 days of receipt UO Image distortion Schott quotes barrel or pincushion distortion up to 3 from the nominal magnification This distortion tends to be towards the taper edges We do not measure or compensate this distortion UO Diamond pattern Due to the fiber bundles used in taper manufacture TaperCamD series may show a slight superimposed diamond or chicken wire pattern shadow _ Edge misalignment Early assembly techniques led to a soft edge of up to 5 of the image area where the taper edge is misaligned with the identically sized CCD edge This assembly tolerance is improved to better than 3 on current versions 3 Respo
81. llseye Parameters Target radius in millimeters gt r Line size in pixels Inverse color 0 90 mm 2 pixels V Enable Centroid Bullseye gaeta Offset Tolerance in uM V Enable Target Match Indicator 10 00 uM OK Set to Defaults Cancel increase the size of the 2D image 1 Set your beam on the camera Right click on the 2D area and select Setup Grid and Targets to open the Grid and Bullseye Setup screen shown above 2 Click on Set to Defaults and click OK The 2D screen settings shown below will appear In this example due to the common 1280 x 800 screen resolution of the laptop some grid lines are not appearing Go back into the Setup screen and set the grid line size to 2 pixels 3 Additionally the cross hairs are confusing the image Right click on the 2D area and select Don t show Crosshairs This gets you the image below right Delta 228 0 um Pixel 56163 85 7 WinCamD Series Delta 228 0 um Pixel 56163 85 7 101 Appendices 4 The Target position bulls eye aim point is by default rose red 1 1 mm diameter and 2 pixels wide centered on the zero of the grid whether or not the grid is visible In the setup screen you can change target bullseye color diameter and line width in pixels and disable enable it By default the reference grid of blue lines has a 1 mm pitch and a 1 pixel line width In the setup screen you can change both color and pitch and width in pixels
82. m 0 to move the measured profile off the tail WinCamD IR supplements are posted to Application Notes at the website Software bugs We attempt to deliver bug free software but just like operating system providers we find it hard to be perfect It is impossible to test all possible permutations and combinations of beam size capture block processing option etc Some error messages are warnings only Some require the software to be restarted Press Alt PrtSc to put the message to the clipboard Then press OK and see whether you can continue to use the software Ctrl V will paste the message into an html email If you find a problem please note the details wherever possible capture a relevant wcf image file and email the file and the details of the PC and operating system to support dataray com We will attempt to resolve the issue as soon as possible Additional Information At the website you can find the following Application Notes Solving WinCamD Issues Remote Support User Guide WinCamD UCM at Short Exposures WinCamD with Lenses WinCamD M2DU Stage Datasheet WinCamD M2DU Stage User Guide WinCamD with Beam Expanders Measuring Large Beams with WinCamD WinCamD with Microscope Objectives WinCamD Series Sensor Replacement WinCamD Signal to Noise Ratio Multiple Camera User Guide Interfacing to DataRay OCX Software WinCamD Measurement of 337 nm N2 lasers USB 2 0 Products Software amp Hardware Compatibility Gaussian Beam D
83. ments also runs under Windows on Mac Intel machines WinCamD Outline amp Mounting Scale 1 1 Introduction 5 Hz maximum for full frame full screen Higher for small Capture Blocks 1 5 On screen selectable Pass Fail colors Ideal for QA amp Production Min Max Mean Standard Deviation To 4096 samples to be added shortly Rolling histogram based on user s initial input Units of mW pJ dBm or user choice relative to a reference measurement input Fluence within user defined area RoHS WEEE CE 1 to 8 cameras Serial capture or parallel triggered capture 115 x 61 x 23 29 mm 2 65 x 2 4 x 0 9 1 13 without with 5 0 mm high ND filter holder with ND4 filter WinCamD UCD12 WinCamD UCD23 BladeCam HR WinCamD XR 8 4 12 9 mm current verify with factory 7 2 12 7 mm current verify with factory 5 7 10 2 mm current verify with factory 7 5 12 0 mm provisional verify with factory 20 holes aligned with sensor center 4 40 holes on camera rear 155 gm 5 5 oz 1 GHz Processor running Windows 7 Vista or XP 32 amp 64 bit 2 GB RAM 10 MB Hard Drive space 1024 x 768 monitor USB 2 0 hi power 500 mA port The software uses floating point calculation therefore a processor with integral numeric coprocessor is required BladeCam see page 18 Threaded 4 40 4 places on rear ra p X rai 2 40 Ag 2A J WinCamD Series fo 8 4 mm i 4 7 2 mm H
84. n 137 Max deviation 1 9 um Last deviation 0 2 um Mean O 9um AMS 0 93 um 0 94 Time interval minimum Samples to be recorded 61492 Replay To ClipBoard Normalize Replay Fast Save ag bitmap To Excel Sequence Off Export to Faint WinCamD Series Quick Start Tutorial Fluence Click this button to see I No Relative Power setting Sil EJ If it says No relative Power setting you need Average Fluence 0 000e 000 oceniam A Valle perore tae Defined Fluence 0 000e 000 Fluence can work Peak Fluence 0 000e 000 Contained Power 0 6 Click anywhere on the Power Bar to open the Peak Area 3 460e 006 dialog box shown below Defined Area 6 476e 005 Enter the power as Defined size Diameter 100 prm measured by a calibrated power meter and the unit Peak Average 0 000 of measurement The power p bar will then display relative Peak Defined 0 000 to the measurement Average Defined 0 000 entered Setup Fluence Hide Fluence If you enter dB or dBm it will recognize these terms and work in logarithmic mode You may also enter 100 as the number and as a label to give answers in Enter relative power and label Eg Enter relative power Enter label mw Cancel Helative Power 4 37 mY Full Range 10 62 WinCamD Series Quick Start Tutorial Press the Setup Fluence button to open the second screen shown above Choose Round or Square Defined Flue
85. n you may approximately double the speed of image capture by choosing FAST rather than FULL Capture Block Select the image size that you wish to capture Using a smaller Capture Block may increase the frame rate on some PCs Drag and click it on the small screen in the dialog box in order to place it over the beam area of interest Flip image flips the vertical orientation of the image Its default is unchecked to ensure that positive Y is up Rotate 180 deg does that Its default is unchecked Gain G X X Most useful when working with pulsed lasers where exposure control is ineffective for pulse widths less than several tens of us and the user must insert sampling amp or attenuation in a quantized manner Gain allows the user to set the Peak to a suitable value With CW lasers this is only used if the beam is so faint that even at the maximum 1024 ms exposure with the ND filter removed the Peak is still not reaching gt 80 Offset The offset is automatically set above the zero of the ADC full scale range This ensures that the noise although very low is properly sampled Though optical intensity is by definition always gt 0 voltage noise will have negative components This is primarily a diagnostic tool with limited user utility Disable this function by clicking the Lock ADC offset disable auto adjust box Set the Offset by setting the Offset slider The Offset is shown in mV and as ADC Peak X X but why would yo
86. nce Area enter the Fluence Diameter and Area units that you require Check the Show Fluence Area box to show the fluence area on the main 2D screen as a white circle or square The default area for the Peak Fluence Aperture is shown on the red grid screen Click on the grid to add pixels to the defined four pixel square shown To save and use what you define press Save To return to the four pixel square press Clean To restore the area that you previously created press Restore You may also enter values and Enable Pass Fail testing of Fluence Test Limits Finally Fluence Setup Dialog Peak Fluence Aperture Peak Fluence Aperture Pirels Peak era 3 460e 6 cme Restore Clean Save click OK WinCamD Series Cancel Fluence Test Limits Average Min blas Enable 0 00 0 00 On Defined Min Max Enable 0 00 0 00 M On 3 4 Peak Min Max Enable 0 00 0 00 On Peak Average Min Max Enable 0 00 0 00 On Peak Detined Min Max Enable 0 00 0 00 On Defined Fluence Area W Show Fluence Area Shape f Round C Square Area units cm2 C mm Fluence Diameter 100 prr 63 Quick Start Tutorial cx This movie camera button allows you to replay the 64 image buffer at a user defined update rate Leave it at 0 0 seconds for PC processor limited replay speed Press it again to stop the replay Power Bar The auto scaling Pow
87. nse Non uniformity Compensation See Appendix E 70 WinCamD Series Capturing Pulsed Lasers CHAPTER FOUR CAPTURING PULSED LASERS 4 1 TERMSAND EA IR spaces cance oe yeaa os ow av ve woe ev oe es Pen een een ee 71 4 2 PULSED BEAM CAPTURE INITIAL SETUP cccccvcccccvecccuvccsuvesevuveseuavesuuvesesunssesuress 72 4 3 AUTON RIGGERC MODE rimore a 74 4 4 EXTERNAL TRIGGER MODE sassassnsnnnunnunnnnnnnnnnnnnunnnnnnrnnnnnnnnnunnnnnnnnnnnnnnnnunnnnnnnn 76 WinCamD Series makes pulsed beam capture as simple as possible That said learn to operate the software with a simple CW beam before you try to operate with a pulsed beam Trust us on this your time will be well spent WinCamD Series Q has comprehensive Auto Trigger capability and a input output trigger via BNC can synchronize to a 1 0 to 12V amplitude preferably TTL input pulse There is 200 ns delay between a trigger pulse and the shutter opening 0 can output a 5 V TTL sync pulse to trigger a laser 0 can advance delay the electronic shutter with respect to the input output trigger Q can dissect pulse widths gt 40 us and do so with synchronous triggering The pulse may be dissected by using an exposure time less than the pulse width and temporally scanning it across the pulsewidth Q can vary the shutter exposure time from 50 us to 1024 ms allowing beam 41 attenuation on pulsed beams with pulse widths greater than 40 us OI
88. nt function appear here E g for the profile area If at any time you are not sure how to do something move to the relevant area of the screen look at the Help Hints bar and you will often find your answer 3 1 7 Main Screen 2D and 3D Display Area View 225 Tilt 33 Delta 135 8 um Pixel 46774 71 4 Average of 20 Relative Power 0 00 Full ii Trigger off delay 0 000 ms Imager Gain 1 0 Top line info shows Delta the radial distance of the current crosshair position from the current Absolute or Relative zero point Pixel I the intensity of the individual pixel at the current crooshair position in ADC units and To use the Delta function choose the Xu button for User placed crosshairs and place the crosshairs at your desired start point Then press z on the keyboard and click again at the crosshair position to set the Relative Centroid to 0 0 Then move the crosshairs to the new position to get both a Relative Centroid readout in x y and a radial Delta value defined as x y Eff Exp 0 000 ms Delta 97 9 um Pixel 45974 70 2 WinCamD Series 33 3 1 Quick Start Tutorial Right click on the 2D area to open the box below This allows you to iv High color palette Select Zoom Monochrome palette foom 1 32 color palette foom 2 10 color palette oom 3 Ink saver option ae foom 5 Auto orient crosshairs foom 6 Force Crosshairs to zero degree
89. nt attenuation 5 1 Important Terms E g 80 Irradiance Power Density For a Gaussian beam of 1 e 13 5 of peak intensity width of 2w cm and total beam power P Watts the peak Irradiance in W cm in the beam Io may be calculated as Io 2xXP xxw 2 55 P 2w Signal to Noise Ratio abbreviated as SNR SNR Peak Signal RMS noise Pulse Repetition Rate Pulses per second for a pulsed laser abbreviated as PRR ND or Neutral Density is a commonly used logarithmic approach to defining the Attenuation Factor provided by a neutral approximately wavelength independent filter It has the advantage that logarithmic numbers may be added and subtracted whereas attenuation factors must be multiplied and divided ND is defined as ND logio Attenuation Factor Attenuation Factor ND Value 1 0 0 2 0 3 3 0 5 10 1 0 1 000 3 0 100 000 5 0 e g ND 2 6 is a ratio of 400 1 Electronic shutter Most CCD cameras offer a manual pull down menu or software controlled electronic shutter mode in which the Exposure integration time per frame may be set effectively acting as an attenuator for CW inputs For WinCamD Series cameras the software interacts directly with the electronic shutter controls on the CCD chip allowing on screen shutter control in small steps from 40 us to 1000 ms For CW beams the exposure automatically adjusts to the beam intensity Obviously use of an electronic shutter
90. nt screen as bitmap file amp Export screen to Paint To save images as jpg JPEG or gif Graphics Interchange Format files use the Export to Paint feature in the DataRay software 0 Print Ctrl P Print Preview amp Print Setup are self explanatory The software will print the current screen plus the date amp a screen plot title The profiles are deliberately printed with vertical elongation for greater visibility The E header includes the software version number amp the day amp date of printing To avoid soggy black paper with ink jet printers go Palettes amp choose Inksaver Q Print with Notes allows you to do precisely that The information is saved Z and may be modified for subsequent prints 0 Load Defaults does precisely that useful if things seem screwed up Holding the Shift key down while starting the software has the same effect Q Load Job and Save Job A Job file allows saving and opening particular software setups It is especially useful when testing a variety of laser assemblies on a regular basis Saving a complex setup with specific Pass Fail criteria is a very effective way of saving time and establishing parameters for repeatable results Multiple ojf files can be saved each with a different set of settings Q The next block shows the names and paths of the six most recent files that have been saved and or opened Where no file path is shown then the file is in the c Program Files Dat
91. o set a different zero level see item 6 in Section 3 3 Offset Profile Scaling Scale xxx x wm div for the current Zoom setting Zoom 2X indicates horizontal zoom on a profile Blank if not selected The scaling at x1 is set automatically by the program Put the cursor on the profile and press i on the keyboard to zoom up to x10 Press o on the keyboard to zoom out Hold down the mouse center button to pan left right Peak xx x is the peak value of the unnormalized profile as a percentage of the 16392 levels 14 bits of the ADC range 1024 levels 10 bits for CMOS 65586 levels for 16 bit Note If the pull down menu Filter value is the default value of Filter 0 2 this Peak will be ess than the Peak value seen on the left of the screen Even with No filtering since the Peak on the left is a three pixel average the values will rarely be exactly the same B x x indicates the baseline level subtracted by the software WinCamD Series Quick Start Tutorial 3 1 6 Main Screen Bottom Line Lett Clip levels SpaceBart Lett measures Aight menu REYS Tr O ut Center R eset Tupe dn up dn O Status Bar Help Hints VERY USEFUL BUT MUCH IGNORED Almost every area of the screen is a Button which you may left click or right click to cause something to happen Watch the Help Hints change on the Status Bar at the bottom of the screen as you move the cursor across the screen Instructions for using the curre
92. ocket The expected input pulse is a TTL pulse The pulse goes high in synchronization with the exposure signal start on the imager chip and the pulse width equals the exposure length Attach a 50 Q or 75 Q BNC cable to the BNC connector on the camera head In most scenarios the laser will provide the trigger to the camera The WinCamD BNC I O impedance is 1 kQ If it does not work verify the electrical pulse shape on an oscilloscope e The camera will repeatedly capture images as fast as the software the PC and the Capture Block setting will allow In this setting the shutter is open continuously As requested by the software the accumulated image is moved to the interline transfer register for readout 76 WinCamD Series f g Capturing Pulsed Lasers Only pulses with an ADC within the set levels will be captured and displayed Pulses which do not meet the criteria will not be displayed The software has a peak level detector for every image captured by the ADC If the peak does not lie within the criteria the image is not displayed and no further processing occurs Set an appropriate Exposure time as discussed earlier There are two counters on screen in this mode In the blue line at the top of the screen the image ETTR STNE counter of captured images continually cycles from 1 to 64 In the Ready button area a counter counts the number of times since go was pressed that the software sampled the AAMS AA camera
93. ofile along the T crosshairs See also Sec 3 2 3 Clip b 30 0 The current head status either Ready Starting or Running 2w_Major xxx um 2w_Minor xxx um AN Major 1537 7 um 2w_Mean xxx um 2VWW_Minor 1510 4 um These diameters are calculated for Clip a AN Mean 1573 1 um about the beam centroid for the total image n whether or not the beam appears cicular Eff diam 1483 0 um Samples profiles for the calculation are taken every 0 5 Ellipticity 0 93 The minor axis is the diameter at the center of Orientation 79 3 deg the 45 sector that contains the smallest mean diameter at Clip a crosshair 44 8 deg The major axis is the diameter at 90 to the AC 131 9 um minor axis Yc 32 6 UM The mean diameter is the mean for the whole beam It may be higher than than the minor or the major values If this seems not possible m consider a rectangular beam and the answer Peak 80 2 becomes clear Image zoom 1 For ISO 11146 values go to the Setup pull down menu and choose Use ISO 11146 compliant diameters and orientation See the end of Section 3 3 Eff Diam The equivalent diameter of the area above the clip level See p 45 Ellipticity 2w minor 2w major Orientation xx x is the orientation of the major axis of the ellipse with respect to the horizontal x axis Crosshair xx x is the angle at which the crosshairs are currently set Xc abs xxx um amp Yc abs or rel are the
94. oftware If an item in a pull down menu appears grayed out it is non functional either because of the chosen mode or because it is inapplicable to the particular camera connected or because no camera is present WinCamD Series 47 3 2 Quick Start Tutorial 3 2 7 File Where there is a corresponding button on the button bar it is illustrated below UO Open Opens the Open dialog box for files 0 Save Opens the Save As dialog box for files j Save current data saves the current on screen profile image SELECT data from data buffer as WCF opens a Beam Select Dialog box that allows you to select which profiles to save Click on an image to deselect it at which point a cross appears on the image SAVE ALL data in data buffer as WCF saves all the profiles in the buffer Be warned that a single 1024 x 1024 image gives a 2MB image Saving multiple images can lead to a very large file If you are going to email files elsewhere consider collecting files over a smaller Capture Block or at a lower resolution amp or zipping the files Save Device Palettes Fiter Camera Ctrl o Cirl s Average Open Screen to Clipboard Save current screen as bitmap file Export screen to Paint Print Ctrl F Print w notes Ctrl Print Setup Load defaults Load Job file Save Job file 1 Sample wef 2 good_ucm_image weft 3 Rev 4 old PCI card 041207 brf 4Ver 9 New PCI card 1041207 brf 5 Ve
95. on approaches given below Note that since wavefront aberration diffraction and interference results from the inclusion of any optical component in a coherent beam Schemes that introduce the minimum number of reflections optical surfaces optical media and dust amp fibers on surfaces are clearly preferred The catalog optics companies list a range of suitable accessories Techniques for beam attenuation sampling may fall into the following categories Absorbing Neutral Density ND filters Attenuation factors up to ND5 0 1 10 are available with single absorbing ND filters As standard we offer stackable ND filters 5 mm stack height each in a circular housing with male and female C mount threads Filters are tilted by a few degrees to avoid interference fringes Standard values are ND 0 5 1 0 2 0 3 0 4 0 Each filter assembly adds an additional 5 7 mm 0 225 in depth in front of the CCD chip Neutral density filters are not truly neutral ND values are normally quoted at 546 nm See section 1 7 for details Power gt 2 5 x Beam diam in mm W or gt 10 W total may damage the ND filter The limit is lower for pulsed lasers especially ns amp fs lasers WinCamD Series 81 3 2 33 Laser Attenuation We offer the EAM 2 C mount 4 wheel variable attenuator assembly with gt 90 dB of attenuation The EAM 2 may be used in series with a microscope objective to magnify smaller beams onto the WinCamD camera Do not a
96. or image sen ater processing The area of the image outside the Rectangular Square Inclusion Region will be color reversed Elliptical Circular Select Define Inclusion region shape size Set Clockwise Orientation of Major O is Horiz and orientation in order to do precisely that In Degrees 0 Checking Elliptical Circular amp _ the ee Automation boxes automates the inclusion kisjor ais ee 2872 region The default Width to Clip a ratio is Minor axis microns 28030 3 0 A ratio of 1 55 includes 99 of the energy for a Gaussian beam ore gy v Auto Orient Show amp Use effective slit profiles i e MEE aiu d the profiles that would result from sweeping pixel width slits horizontally and vertically __Retesh _ Cancel across the beam Show merely superimposes them on the 2D screen Use uses them in the profile area On a future release this will automatically initiate HyperCal For now you may to have to initiate it Zoom the 2D profile area x1 to x10 Press i oro for in or out on the keyboard for the same effect Hold down the mouse center button to pan left right Use multi beam display group See Appendix G Options Profile to Clipboard Save image as Bitmap file and Export to Paint opens Paint Show Image Information opens a box with the data shown right for a live or recalled image Setup Grid and Targets See Appendix H Image Pixel Information Axis Analysis
97. ose the software before connecting the hardware Windows Vista Read Appendix F before proceeding 1 Check that your PC meets the Minimum PC Requirements on page 2 3 Install the software as Administrator Sec 2 3 Open the software this loads the driver In the Device pull down menu select WinCamD Close the software 2 Install the camera Connect the camera head amp follow the New hardware found wizard to install the driver Do not let it go to the web to find a driver Allow it to install automatically 3 Start the software The camera LED cycles Red Off Green Red Green If it stays Red when the software is on the port is not reporting itself as USB 2 0 In the pull down menu go Device WinCamD The software detects the camera type Remove the dust cap Press 5 TaperCamD series Go Alt S set Pixel multiply factors to rear label value Note The BNC on the camera is a trigger port It is not an analog video output Installation Problems Go to Section 2 3 and follow the more detailed procedure WinCamD Series 19 2 1 Installation Pictured WinCamD with 1 1 UV adaptor For both UV converters and Cam IR adaptors remove the ND filter on the camera before attaching the convertor adaptor Then ensure that the PMF value on the label on the converter adapter is entered in the Setup dialog box For pictures datasheets of the following see the website Q TaperCamD TaperCamD20 15 WinCamD with Cam IR Adaptor m
98. ough the New Hardware found procedure but do not allow Windows to search on the web It should may install completely automatically If it does go to Sec 2 4 Camera did not install The driver should have installed automatically when you opened the installed software It is not separately on the CD Driver installation problems In Windows Explorer find the 32 bit x86 or 64 bit x64 driver as c Program Files DataRay DATARAY_DRIVERS driver_x86 32 bit USB_Driver_x86 DataRay_usbio_x86 inf c Program Files DataRay DATARAY_DRIVERS driver_x64 64 bit USB_Driver_x64 DataRay_usbio_x64 inf 22 Right click on the inf file for your system and select Install Disconnect and then reconnect the camera If it installs go to Sec 2 4 XP Installation still a problem On CD or in PC right click iDataRay exe select Properties select the Compatibility tab select Run this program in compatibility mode for Windows XP check Run as an Administrator Click OK Reboot if instructed by Windows Double click iDataRay exe to reinstall Open amp then close DataRay software Disconnect and then reconnect the camera If it installs go to Sec 2 4 WinCamD Series Installation 6 What should it look like in Device Manager At the desktop right click on My Computer select Properties Device Manager click on the sign next to DataRay Inc USB2 0 Devices and double click the driver If necessary select Drivers and then click on Update Dri
99. oured display at 10 and 32 colors Raw and smoothed profiles Triangular running average filter up to 10 FWHM Diameter at two user set Clip levels Gaussian amp ISO 11146 Second Moment beam diameters Equivalent diameter above a user defined Clip level Equivalent Slit and Knife Edge diameters Gaussian amp Top Hat profile fit amp fit Equivalent Slit profile Major Minor amp Mean diameters Auto orientation of axes Relative and absolute Intensity Weighted Centroid and Geometric Center Beam Wander Display and Statistics 0 1 um processing resolution for interpolated diameters Absolute accuracy is beam profile dependent 1 um accuracy is frequently achievable Centroid accuracy is also beam dependent It can be as good as 1 um since it is arithmetically determined from all pixels above the centroid clip level Image amp profile Averaging 1 5 10 20 Continuous Background Capture and Subtraction User set rectangular Capture Block for capture User set or Auto ellipse Inclusion region for processing ojf files save all WinCamD custom settings for particular test configurations WinCamD Series Update rate Pass Fail display Log data and statistics Relative Power Measurement Fluence Certification Multiple cameras WinCamD head dimensions Width x Height x Depth Optical depth from housing filter to sensor no window 0 2 mm Mounting see drawing below Weight Camera Head Minimum PC Require
100. owm Men s te tesstate tte tt EENE EEEE EEEE EEEE EAEE 47 3 2 7 I EE NIES PA TIEA AAEN NN E ENNEN N E A EEEN 48 3 2 8 PIO VIC CS 9 9 3950 299 9999 99S IPI III PITS STIS 49 3 2 9 2 2 5 hc eee en eS mS A EVOEE SUERTE NSIT S ETE NY BSED IOnEOR EERE 50 S210 AVAG Eere E E EE E E EEE 50 32 11 Ftor chai clin Cons ataa aa a a a a a a a Cian damn aaa aaa 51 3 2 12 I TAE T E E a ee eee 52 SEN ro Se VASA Se tte Oe aa rer enae 52 3 9 SETUP eonenna toon tenet onetenctsnevenerenet eat enne enki part sane enntoentnanteneteneteaweeneee 53 3 4 TOOL BAR Gsdvdadudedadglaisietsicdadaiatedsiedidediaadidedsledsdadsiadviadiledsladitadsdedudeiededaieds 55 3 5 SHORT GUTS oe tee ce eao beet eet et oo i 66 3 6 HARDWARE QUICK START TUTORIAL cccccceee cette ene n nen EEE nnn EEE 67 3 6 1 Precautions and Safety WAPrninGS serere orsi iiai ei ia aa a aaa iaa eiaa eiai aka 67 3 6 2 SAUNG P eE EE E E 67 3 6 3 Artifacts and Cleaning of the ND filter amp Imager chip w csssssscceeeennnneeeees 69 3 6 4 Tapec amO APACS ot visa es is ee ea eee 70 CAPTURING PULSED LASERS yanigin ann A 71 4 1 PERI SAID En WIRES arere E E E E 7i 4 2 PUESED BEAM CAPTURE INITIAL SETUP citi wce teria Aichi rekereke ree bk bike bet wlio 72 4 3 AUTO TRIGGER MODE srirerertreverrvernrereeerennreneeeneeenneeneeenternneenneennrennernneenereneres 74 4 4 EXTERNAL TRIGGER MODE witi leieleceivasitagaradaradaradaresaqagaqasadagaqasacasaqagacagaqagacaads 76 LASER ATTENUA TON iia users cesta ane sbi eea ra a
101. person with direct experience of the problem at hand when you call Save relevant wef etc files including reference files so that you can show us the problem If a third party is going to call us to arrange the return all this is even more essential Tip 1 Do check that everything is correctly plugged in Never unplug a head except WinCamD heads while the software is on Where possible check hardware and cables by substitution Use static safe procedures when working with PC cards or disconnected heads Tip 2 If The software is not working like it used to remember that you can flush the software to its default configuration by going to File Load Defaults You may also download software upgrades for free from Software Upgrades at the website WinCamD Series 93 App Appendices 2 If you have a production line down due to equipment failure or some other time crisis call Technical Support 3 If you are sure that the equipment must be returned e g it is physically damaged or it was an evaluation item go to step 5 4 If it is not working but you are not sure why contact Technical Support We can frequently solve problems over the phone or identify the problem well enough to minimize turnaround time on returned equipment and or the number of items that need to be returned 5 Generate the paperwork Not providing the paperwork inevitably leads to delays a Contact support dataray com with a description of
102. possible to simply measure it directly from a graphical plot of the data b Any unsubtracted background in the wings either purely analog noise or quantization noise due to inadequate dynamic range in the sensor or the ADC analog to digital converter leads to errors in the second moment In general it leads to an over estimation of the second moment width c If the I x y z intensity profile has wings which fall at a rate slower than 1 x or 1 y then the double integral actually increases as x and y increase For reasons b and c most commercial second moment beam diameter software first automatically determines and subtracts the background and then truncates I x y z to the zeroed background level at a predetermined distance from the 1 e diameter Some software allows the user to override this distance 4 Acknowledgements Parts of this Application Note draw on Reference 2 and we have used the same notation wherever possible 5 References 1 ISO 11146 Optics and optical instruments Lasers and laser related equipment Test methods for Beam widths divergence angle and beam propagation factor Published by the International Organization for Standardization Available from your national standards organization www ansi org in the US 2 T F Johnston Jr Beam propagation M measurement made as easy as it gets the four cuts method Applied Optics Vol 37 No 21 20 July 1998 pp 4840 4850 WinCamD
103. r 9 New PCI card 4041207 brf 6 Ver 9 New PCI card 3 041207 brf prior to sending them www sendlargefiles com is a free file sending service Save current data as binary does precisely that The format is defined in WCBinary h in c Program files DataRay Save current data as text Can be slow saves a file in text format These files may be imported into programs such as Excel using and comma and semi colon as delimiters Save current data as 8 bit TIFF does precisely that Save current data as 16 bit TIFF non standard does precisely that Note that there is 48 SELECT data from data buffer as WCF SAVE ALL data in data butter as WCF Other file Formats Save curent data as binary Save curent data as text Can be slow iw Use semicolon as line termination Save current data as bit TIFF Save curent data as 16 bit TIFF non standard See Datah ayFormats doc for infomation Cancel Quick Start Tutorial no standard 16 bit TIFF format These files do successfully import into Windows Paint For the file format see Tiff h in c Program files DataRay Tiff h describes the structure of the Save current data as TIFF image file MatLab To import TIFF files into MatLab see Appendix D 0 Screen to Clipboard sends the screen area between the Toolbar amp the Status bar to the clipboard allowing import into reports generated in other software Other options are Save curre
104. rectory Contact Technical Support for your custom Excel export requirements A future version may include active export to Excel so that real time adjustment can be monitored 46 Fd Microsoft Excel BeamFit3 xls Bs File Edit View Insert Format Tools Data Window Help gt amp Ai A Favorites Gor gt C Program Files DataRay BeamFit3 xls DS HEHAR GRY BBe Slo a x 4 Z l i w 100 N23 v fe MAAA el ee ee ee ee Beam Profile Fit Target Minimum Maximum Measured Diameter mm fam 5 Clip level Beam Diam Specs Beam Diameter Results Clip Level Target Min Max Mean X Y mm mm _ mm mm m m 135 5oo 480 520 504 5030 5044 20 450 430 470 443 4454 4398 30 375 360 390 373 3754 3697 40 320 305 330 319 3166 3216 50 270 260 280 270 2697 2712 6 23 225 245 z337 P 153 150 155 153 1524 1533 _ 90 100 oas 105 104 996 1084 7 oso oss oss oso 456e s54 Serial Number J Z Do Engineer o d o 0 30 0 5 t t t 00 09 00 09 00 www wlw nll NN ho ho EIR Jw N 09 00 4 On ENH Oo Sa Blo a w Quick Start Tutorial 0 Set profile colors allows precisely that You can waste infinite amounts of time playing with this Other profile manipulation features Center profile In order to center th
105. rid Go Start starts data collection Zooms in Zooms out Pan the profile Resets Profile scale Zoom to 1X Stop stops data collection Selects x profile Selects y profile Opens a file Prints the results Opens Save dialog Opens Trigger dialog Opens Beam Wander 66 WinCamD Series Quick Start Tutorial 3 6 Hardware Quick Start Tutorial 3 6 1 Precautions and Safety Warnings Do not skip this If you do not take these precautions you may damage the equipment or your eyes Always look up or measure the beam power and try to estimate the beam diameter before analyzing a laser beam for the first time Ensure that it meets the maximum irradiance and maximum power limits in the specifications Follow the guidance in Chapter 5 Be aware of the laser beam path and its reflections Where appropriate use beam blocks and Wear Proper Eye Protection for the wavelength being analyzed To avoid fragmented files always close the program properly Never turn off the computer while the program is active Image spots and diffraction rings See Section 3 6 3 AS 3 6 2 Starting Up a b c d e If you have not already done so install the software and camera Chapter 2 Eye Safety If the beam power is high put on your laser safety goggles before you turn on the laser It is your responsibility to determine eye safety issues Use a viewer or phosphor card for beams invisible to the naked eye Disconnect the cabl
106. ription and the formulae Since Second moment diameter is a total image based calculation then at least to a first order it is not subject to pixel dimension quantization limits In accordance with the ISO 11146 standard DataRay cuts off the calculation at 99 of the included energy For a pure Gaussian beam 99 of the energy corresponds to curtailing the calculation at a clip level of 1 corresponding to a beam diameter 1 5 times greater than the 13 5 clip level diameter For typical beams that are not pure Gaussians these numbers would be different 5 Centroid The Centroid Xc Yc of an image is the intensity weighted arithmetic mean position of all pixel intensities above the centroid clip level default value 13 5 It is the Center of Gravity of the beam As noise moves pixels above and below the centroid clip level and hence in or out of the centroid calculation the centroid value may change by an amount lower than the pixel size For large beams the quantization is barely visible For smaller beams it may become significant 92 WinCamD Series Appendices APPENDIX C Support Returns Distributors Reps The Support pull down menu has hyperlinks to 0 www dataray com DataRay com Q The software upgrade page Software Updates OY The product registration page Register product O support dataray com Technical Support See also Solving WinCamD Issues amp Remote Support User Guide at the website DataRa
107. rtion to the number of pulses captured The Saturation Limit assumes The ND 4 0 filter in place Single pulse capture with the electronic shutter set at lt 0 95 PRR The gain is set at 1 Power gt 2 5 x Beam diam in mm W or gt 10 W total may damage the ND filter The limit is lower for pulsed lasers especially ns amp fs lasers Use the graph right to estimate for wavelengths other than those shown Relative Exposure vs Wavelength L AT LA DUT A UUM a mw me Z i a3 A Il N 300 500 700 900 Wavelength in nm WinCamD Series 13 N DW 1 6 NS L 1100 Introduction WinCambD series Filter Tranmissions ND 100 9 ND1 10 ND2 i ND4 thin i lt ND3 i ND4 thick 0 1 3 0 01 4 UG11 0 001 5 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 Ai ND filter transmission values from Schott Excel program Filter 2004 Part ND1 ND2 ND3 ND4 thin ND4 thick UG11 Older Newer Thickness mm 1 05 2 1 3l 1 0 2 83 3 0 Material NG1 NG3 NG3 NG1 NG9 UG11 Warning Power gt 2 5 x Beam diam in mm W or gt 10 W total may damage the ND filter The limit is lower for pulsed lasers especially ns amp fs lasers ND Neutral Density is specified traditionally at the 546 1 nm Hg line
108. s See also the supplement supplied with the camera You may install a BeamMap Beam R BeamScope amp a WinCamD Series system in the same PC Up to eight cameras can be operated from the same PC Read the Manual If User Manual authors had their way this paragraph would read If you read this manual first you are entitled to free product support by phone or email For those who decide not to bother to read the manual before calling for support a Help line charged at a per minute rate is available Seriously though read this manual to enjoy the full benefit of your investment Other Issues E Q Windows not DataRay software requires that the WinCamD driver be installed separately for each newly used USB 2 0 port CCD Comet Tail At short exposures and gt 900 nm a vertical comet tail may appear This is an unavoidable feature of high resolution CCD chips Incident light leaks past the metal over the vertical transfer register The effect is worse at longer wavelengths and for beams incident at other than normal incidence To eliminate the tail select the CTE rE button in the toolbar In addition 1 Use exposure times gt 0 5 ms wherever possible 2 Ensure that the light is incident close to 90 Tune the angle 3 Set up a Capture Block appropriate to the size of your beam 4 Use Inclusion region settings to exclude the tail region from the calculation 5 Rotate the crosshairs fro
109. s foom Force Crosshairs to 45 degrees foom 8 Don t Show Crosshairs foom 9 Crosshairs snap to centroid default oomo n Crosshairs snap to geometric center Use multi beam display Crosshairs snap to peak location Crosshairs user placed Inclusion region ENABLED Lock current inclusion region Inclusion region shape is round Inclusion region shape is elliptical Profile to clipboard Inclusion region shape is square Save image as Bitmap file Inclusion region shape is rectangular Export to Paint Define inclusion region shape size and orientation F Show Image Information Show effective slit profiles Use effective slit profiles Show U and V profiles profiles Setup Grid and Targets Q Change the palette selection Includes Inksaver option for printing see Sec 3 2 9 Auto orient crosshairs Force Crosshairs to zero or 45 degrees or Don t Show Crosshairs If you uncheck all these options then you can orient the crosshairs yourself by clicking and dragging on the outer portion of the crosshair UO Snap to centroid geometric center peak location or user placed These functions are paralleled by tool bar buttons See Section 3 4 for detail 4g Ap Au 34 WinCamD Series 3 2 Manipulate the Image and Profile This takes you beyond the defaults described in Sec 3 1 3 2 1 3D Display amp Manipulation Quick Start Tutorial Inclusion Shape Size and Orientation Set an Inclusion region f
110. s good practice to back it up elsewhere Press the button to the right of the background subtraction button in order to turn it off 7 In the Setup pull down menu choose Capture setup dialog ALT S Click the Enable box and Browse to the file that you just saved Click OK IR Camera and Compensation file settings Gamma Compensation file location v Enable 1 00 C Program Files D ataRay5000104003 6 CormpLo 0 20 CompH i 5 00 Comp First then gamma Ok Set defaults Cancel Average of 20 8 Press the Go button The screen should appear flat if you are viewing the same scene that was used to take the compensation file 9 If you view a different scene the image will be compensated for array variations as long as you look at the same part of the array with the same resolution Currently if your change the Capture block you will need a correction file for that specific Capture Block This is complex but may be addressed in a future release WinCamD Series 97 App Appendices 10 On an actual beam variations between 20 and 500 of the mean will be compensated Average of 20 Uncompensated Compensated 98 WinCamD Series Appendices APPENDIX F Windows Vista Installation and Use Issues Applies to All DataRay products If you are using Windows Vista you will already have noticed that in the name of enhanced security Vista includes a number of UAC Permission related pop ups even i
111. se the Alt key amp press the S key As necessary use the Enter key to complete a process 1 8 Manual and Copyright Notice This manual describes operation of WinCamD Series Imagers We reserve the right to make changes to this manual amp to the instruments described herein without notice We have taken considerable effort to ensure that information in this manual is accurate amp complete However we will not be liable for technical or editorial errors omissions or for any incidental special or consequential damages of any nature resulting from the furnishing of this manual or from the operation amp performance of the instruments described herein BeamScope BeamMap BeamMap2 Beam R Beam R2 BladeCam ColliMate CTE DataRay HyperCal TaperCamD TaperCamD20 15 amp WinCamD are trademarks of DataRay Inc All rights reserved Other trademarks belong to their respective owners cant a 0 275 BladeCam N fr TY yN A i 0 45 Outline amp Mounting Om 425 shown actual size WinCamD XR not shown 2 65 x 1 8 x 0 75 C Mount B 1 0 32 UNC 2B 1 80 Centered HR XHR 1 80 Sensor to case face as a ES 0 65 B AY E 16 4 mm Holes A 8 32 x 0 20 deep 3 sie centered in long edges 0 15 from front face 8 32 to M4 thread converters are supplied outside NA Holes B 4 40 UNC 2B x 0 2 deep 8 pics 0 275 from corners 0 125 from front face 18 WinCamD Seri
112. section assumes that you have already considered use of a TaperCamD a TaperCamD20 15 or a Beam Expander Unsure Contact support dataray com 5 5 1 Imaging of the laser beam scattered off a diffusing surface Incident nn i aA a eee Scattering from a Diffuse Scattering Surface See e l Focusing lens WinCamD This has been found to be a very effective technique Not only is the beam image optically reduced to fit the CCD area but also the scattering reduces the beam intensity Q If a standard camera lens assembly with integral focusing and iris aperture is employed then focusing is simple and the beam intensity can be further attenuated by closing the iris Q If the incident and scattered angle employed are small and similar the cosine distortion of the beam on the diffuser is compensated with the camera and lens aligned as shown orthogonal to the axis of the scattered light UO A perfect diffuser backscatters 31 8 per sr sr steradian of solid angle For beams up to 24 mm tota diameter the Melles Griot SpeckleEater is a rotating diffuser that employs a rotating diffusing disk to eliminate speckle for CW beams O A 10mm lens aperture at 100mm distance samples 7 86 10 sr and therefore would pick up 0 25 1 400 of the beam reflected off a perfect diffuser More generally if the beam image on the diffuser is focused through a lens iris aperture diameter D at distance L from the diffuser where
113. sion to continue prompts 230866 php For the Microsoft official line on these UAC security issues see your Windows Vista manual and or User Account Control Overview http technet microsoft com en us windowsvista aa906021 aspx and or Windows Vista Help and How to http windowshelp microsoft com Windows en US Help f941cb45 b2cd 4b39 ab87 cb9ea959f44e1033 mspx WinCamD Series 99 Appendices APPENDIX G Multi Beam User Guide 1 Set up the Beams Learn to use PHATE the WinCam camera in normal mode including the use of Capture Block amp Inclusion Region as described in the manual For the highest update rate set a Custom Capture Block slightly larger than the area within which the Jon W beams are expected to appear seed 2 Right click on the 2D screen amp select Sequence beam on multi beam displa Use Multi beam display equence beam on multi beam display Use first beam on multi beam display s Set the cross hairs to Xc Use second beam on multi beam display e Setup the Inclusion Region on the Use third beam on multi beam display first beam See page 3 9 Do not Use fourth beam on multi beam display use the automatic settings e Press and hold the Ctrl key amp click and drag the crosshairs to the new beam and set up an Inclusion Region on that beam Do this on up to four beams on the screen Delta 3585 3 um Pixel 23174 35 4 gt Eoee ranae e Optionally right
114. solution for large beams amp or initial alignment Q automatically set the correct exposure time for CW lasers 0 _ vary the pre ADC gain for pulsed lasers UO via the BNC accept an external trigger or output a trigger to a pulsed laser E automatically synchronize to the pulses from lasers with PRR s Pulse Repetition Rates between 100 Hz and 25 kHz UO advance or delay the capture timing with respect to an external trigger 0 process and log acquired images 8 WinCamD Series Introduction 1 4 Calibration Dimensional beam calibration of a WinCamD Series camera heads is an intrinsic calibration based upon the traceable precision of CCD and CMOS photolithography The nominal dimensions of the chips and pixels are used in all calculations The accuracy is believed to be much better than 0 5 and probably better than 0 1 Calibration and a certificate is available when requested Contact us Dust on the ND filter or the chip affects the measured image and the accuracy Dimensional accuracy of TaperCamD s is limited by the Schott specified 3 pincushion or barrel distortion of the fiber optic tapers primarily found towards the outside edges 1 5 WinCamD Series Product Specifications Specifications apply to all cameras in the series unless otherwise noted and are subject 1 4 to change without notice WinCamD XR will be available late Q2 2010 1 5 e WinCamD UCD12 WinCamD UCD23 BladeCam HR WinCamD
115. t this feature with direct software addressing of the electronic shutter n Reflection off a window prism or wedge front surface Sampling factors from 4 for an uncoated window to lt 1 for an AR coated window ND1 4 to gt ND2 0 An issue with any such reflection is the degree of polarization sensitivity as a function of angle of incidence Catalog optics companies also offer suitable wedged windows Note that fused silica damage thresholds can be as high as 1 kW cm so this can be a very effective way of dumping power The CUB and CUB UV are C mount accessories which take a 3 to 10 sample using a optical wedge Note that the wedge gives two reflections of similar intensity separated by 30 arcmin 8 7 mrad meaning 0 9 mm at 100 mm A future version will use a 3 52 mrad beam 82 WinCamD Series Laser Attenuation splitter Use an ETCM series spacer tube to separate these before both reach the sensor O Multiple reflections in a wedge beamsplitter Sampling factors of 1 1 000 000 are attainable but multiple internal reflections may lead to interference if the beam divergence is comparable to the beam deviations in the wedge prism Since the angular separation of the beams is 29 if the beam is large and is small it can be hard to determine which beam is being sampled If the reflection coefficient per surface is x around 0 04 4 for material with a refractive index n of 1 5 then for angle of incidence 6
116. t to save time read and follow the instructions IMPORTANT INSTALL THE SOFTWARE BEFORE THE HARDWARE The software can be used to view data whether or not the camera is installed You must install the software as Administrator User with Administrator Rights is not enough Windows requires that hardware drivers be installed by an Administrator If you cannot even install the software it may be that your Administrator i e the actual IT person has restricted your software installation rights and must therefore be called in to install the software Not sure what your User Profile covers Windows 7 Go Start Control Panel User Accounts amp Family Safety Add or Remove User Accounts this Choose the account that you would like to change window tells you whether or not you have Administrator status If you do not to click your account name and change the Account Type Vista XP Go Start Control Panel User Accounts click on your account name click on Change my account type and verify that Computer Administrator is checked Software upgrades are free for the life of the product The absolutely latest software is not necessarily the version that arrived with the hardware Always visit Software Upgrades at the website in order to determine whether a more recent version is available for download Check the version and the date If you do not already have it download the latest version of iDataRay exe from the website and p
117. ternative and consistent set of settings use the ojf file approach outlined in section 3 2 8 When you next open the software you may carry on with the settings saved on the last exit load the defaults or load a saved ojf file If you are working with pulsed lasers read and understand Chapter 4 The standard cable supplied is a 3 meter 10 ft cable If you need a longer or shorter camera cable then you may purchase one at your local electronic store It is a standard Male A to Mini B5 USB 2 0 cable beware there are other terminations for USB 2 0 cables 2 m extension and 5 m booster cables both Male A to Female A are readily available Warning Some very thin USB 2 0 cables may not work due to their internal resistance Background image subtraction see Section 3 4 Large images if the beam is larger than the image area you may still measure it at a clip level that lies within the image area even though the edges are outside Set up the beam to a reasonable Peak level and then disable the auto exposure Then block the beam press Alt S and Lock ADC offset Click OK unblock the beam and then measure it in the normal way See the first page of section 3 4 Comet tails at 2 gt 900 nm Use the CTE button With comet tail with CTE WinCamD Series Quick Start Tutorial 3 6 3 Artifacts and Cleaning of the ND filter amp Imager chip The first advice is Do not but sometimes it becomes necessary
118. the test This is also the box to be checked for Log enabled data only See Log Data in Section 3 4 When the test is enabled the numbers will be displayed on screen in the chosen Pass Fail colors The default colors are Green for Pass and Red for Fail Right click on a result to change these colors See 3 2 5 below Quick Start Tutorial Pass Fail parameters Ed Parameter Major idth win eam Upper Limit OOOU00 0 um Lower Limit QOOO00 0 um Enable test Lock wy password Cancel Check the Lock w Password box to lock the criteria The box below appears Note Remember the Password It you change it it cannot be retrieved If you put in the wrong password the box Password shown right will appear At the time of writing Enter new password Confirm password a Cancel WinCamD Series the master password is case If at some later time this does not work contact Technical Support 1 peanuts all lower 39 3 2 Quick Start Tutorial 0 Right click on any result area of the screen to open Custom button colors select dialog box Unless you have good reason or good color sense it is suggested that you stay with the default values Button colors for u_WinCamD_Width_at_Clip 1 D 78 x Button colors press color to change Normal Text Pass Text Fail Text Invalid Text BackGround L L 0x0 0x000 Ox6600FF OxSUF F OxE OE QED Set
119. to determine whether an image meeting the Minimum and Maximum criteria has been captured If every image is good then these two numbers will be equal If as is frequently the case not all images are good the count in the Ready button area will increase at a greater rate than the captured image count In addition if there is a difference between the numbers the Ready button will also frequently display the message Waiting For processing speed reasons the update priority on the Ready button is not as high as some other areas of the screen When no image is captured there is more time available for the button to be updated so the message tends to stay at Waiting Capture but too low If this message appears in the Ready area it is telling you that a frame was taken but the peak level was below the set Minimum level in percent Capture but too high If this message appears in the Ready area it is telling you that a frame was taken but the peak level was above the set Maximum level in percent Waiting means not receiving a trigger pulse Advance or delay the Trigger Control slider to change the timing of the capture in relation to the trigger pulse until the whole pulse is captured pei On Trigger delay 0 000 ms WinCamD Series 77 4 4 Capturing Pulsed Lasers 78 WinCamD Series Laser Attenuation CHAPTER FIVE LASER ATTENUATION 5 1 IMPORTANT TERM Saranan nru aaa A AAA aAA AAA A a A A AAA AAAA 80 5 2 ATT
120. ttempt to attenuate high powers or power densities irradiance with absorbing ND filters Absorbed power gt 2 5 x Beam diam in mm W or gt 10 W total can cause the filters to shatter presenting danger of injury and camera damage Note that 3 5 diskette material is uniform and has ND 2 0 and is sometimes a quick fix but beware the fire risk if used too near to the focus 5 25 diskettes are ND 3 0 UO High Power Dielectric Attenuators See the HPDA_Datasheet at the website These C mount reflective attenuators with OD factors up to OD3 0 1 1000 are available with HPDA reflective narrow bandwidth dielectric reflectors Damage limits are very high at 20 J cm 20 nsec 20 Hz 1064 nm at the wavelength of interest Angle of incidence is limited to 10 Avoid reflecting the beam back into the laser Care must be taken to direct the reflected beam to a beam dump and to avoid forming an external cavity laser with the source under measurement O Metallic Neutral Density filters Attenuation factors up to ND4 0 1 10 000 are available with single metallic ND filters Avoid reflecting the beam back into the laser Care must also be taken to direct the reflected beam to a beam dump Above ND2 0 metallic ND filters are highly wavelength dependent For these reasons metallic ND filters are normally not recommended Electronic shutter See the discussion earlier in Section 5 1 This is why the WinCamD series cameras exploi
121. ttes For the purposes of this example we use sample wcf the Gaussian output from a single SAVE ALL data in data buffer as WCF mode fiber found in c Program files DataRay C a ee To import the background subtracted image data into Save current data as binary MATLAB go Stop File Save then in the WinCamD Save current data as text Can be slow File Save Dialog select Save current data as 8 bit Save current data as 8 bit TIFF TIFF or Save current data as 16 bit TIFF The 16 bit matrix has a greater value range than the Save current data as 16 bit TIFF non standard applications See DataRayFormats doc for infomation SELECT data from data buffer as WCF 8 bit matrix and is more appropriate in most Cancel The Matlab command for importing the tiff files is A imread sample tiff tiff This command will import both the 8 bit and 16 bit files correctly into the matrix A However remember that some built in MATLAB functions which you may want to use for your analysis only work with double precision floating point values However the tiff files are imported as unsigned 8 or 16 bit integer values as they should be To fix this simply run A double A This command is not required but will fix a problem that you might quickly encounter A simple plot of the matrix using the code below is illustrated below for the imported 16 bit sample tiff figure imagesc A min A max A 7
122. tware configurable Auto trigger Synchronous amp Variable Delay Measurable Sources Measured Beam Powers See the Saturation Power Graph and Notes below Wavelength Ranges Standard camera 350 to 1150 nm WinCamD Series 9 Introduction 1310 IR Cam IR Adaptor UV Electronic Dynamic Range CW Pulsed Manual Beam Attenuation Accessories Displayed Profiles Measured amp Displayed Profile Parameters Beam Diameter Beam Fits Beam Ellipticity Centroid Position Measurement Accuracy See Appendix B Accuracy is not limited to the pixel size Processing Options 10 350 to 1350 nm Residual silicon response 1480 to 1680 nm IR Phosphor 10 non uniformity 40 um FWHM 1480 to 1680 nm IR Phosphor 10 non uniformity 180 um FWHM UV converters for 4 lt 350 nm are available from DataRay with options down to X ray 44 dB 25 000 1 electronic shutter 7 dB 5 1 WinCamD gain control Provided ND 4 0 10 000 1 C mount Neutral Density filters See transmission curves page 1 9 ND 0 5 1 2 4 amp 5 Screw stackable C mount filters available EAM 2 4 wheel stepped variable attenuator 0 to 90 dB CUB and CUB UV_ 5 90 deviation wedge beam samplers Holographic Beam Samplers 1 amp 0 05 Gentec eo HPDA High Power Dielectric Attenuators CVIMG Laser Line 2D amp 3D plots Normalized or un normalized Linear or Logarithmic Zoom x10 2D 3D in 10 32 or max colors or grayscale Cont
123. u want to Drag capture box to desired location The slider bar allows you to access the full imager width on some sensor options The box below shows the location of the top left hand edge of the box This will be changed to the center of the box in a future software revision Pixel multiply factor Allows you to adjust for ancillary optical elements that may change the scale between the object plane and the CCD pixel plane For TaperCamDs this number is on the label on the back of the camera and on page 1 14 The PMF value is now held in the camera EEPROM and will not change unless you specifically change it IR Camera Settings now includes the ability to select the Enable IR Camera option with a default gamma value of y 1 41 The Gamma Greek y of the phosphor is the power relationship between the CCD signal and the input irradiance intensity Video Signal Input irradiance Gamma correction is not required for cameras without the IR phosphor You may ignore the test modes unless directed there by Tech Support WinCamD Series Quick Start Tutorial O Enter Magnification Factor Grayed out Ignore Enter Wavelength You may always ignore When the M2DU is in use you will enter wavelength in the M2DU setup dialog Numeric display modes is discussed in section 3 2 3 O Set centroid cliplevel allows you set a default other than the 13 53 1 e USMebe tine ie rites The centroid is calculate
124. umeric Display Mode resolution option does not make Accuracy higher Numeric Display Modes 2 Pixel size pitch quantization ees mm The pixel dimension actually the pixel pitch since mae M the fill factor is never 100 is 4 65 um for WinCamD 6 7 um for WinCamD UCM With ees OPT mm TaperCamDs the effective pixel size is even larger In fast mode the pixel dimensions are twice as large Cancel The casual observer might conclude that all measurements must be quantized in terms of the pixel dimension As shown below this is not the case 90 WinCamD Series Appendices 3 Beam Diameter based on clip level WinCamD measures the outer diameter at the clip level It must achieve this whether or not a pixel is at the specified clip level intensity To do this it relies upon inter pixel linear intensity interpolation The magnified orange profile portion shown against the light green grid shows the profile intensity y axis versus position x axis for the left hand edge of a profile There are pixels above and below but not on the blue line indicating the requested clip level Rather than simply taking the outer pixel as a diameter basis WinCamD determines the position of the two adjacent pixels above and below the requested clip level and performs a linear interpolation between these two values I E the software determines the position where the profile would have crossed the clip level if the imager pix
125. veraged profile Reset average ESC Press r or the Esc button on the keyboard to restart the averaging 50 Matchaa Fiter Camera w Mo averaging Average 5 Average 10 Average 20 Continuous WinCamD Series Quick Start Tutorial 3 2 11 Filter Selects profile and or area smoothing IMPORTANT For beams below 20 times the pixel dimension the Filter should be set to No filtering Filter selects a triangular weighting smoothing function performed as a running smooth of the profile The default is 0 2 filter Select Filter 0 X Full Scale The actual FWHM of the triangular filter may be calculated as FWHM of full scale x Scale m div x Zoom factor 10 Camera View Setup FWHM No Filtering Filter 0 1 Full Scale w Filter 0 2 Full Scale Samples Filter 0 5 Full Scale Filter 1 0 Full Scale E g for of fullscale 0 2 ss g Filter 2 0 Full Scale Scale m div 50 Filter 5 0 Full Scale Zoom factor 4 Filter 10 Full Scale FWHM 4 um v WinCamD 1X 1 no filter 3 2 Since smoothing causes an increase in the width of WinCamD 2 X 2 pixels the smoothed profile the displayed value for the WinCamD 3 X 3 pixels beamwidth is corrected using the same algorithm as B E EO is used for slit width correction WinCamD 4 X 4pixels slower The area image filter for WinCamD series only calculates the average of the sum of the pixels over the specified sample E g on 3 x 3 pixels it takes all ne
126. vers to get to the Update Device Driver Wizard again Device Manager File Action View Help Hees E LUDACRIS SPEED Y Computer E8 DataRay Beam Profilers Eg BeamMap Beam F BeamMap C and BeamScopeP Profilers Eg DataRay WinCamD Camera Pai DataRay Inc USB2 0 devices DataRay gt WinCamUCM USB2 0 v1 VID 1632 PID 1001 2 4 Mounting the Head 1 It is recommended that you mount the head before you connect it WinCamD cameras have integral 4 20 mounting holes in line with the sensor BladeCam has 8 32 threaded holes and comes with male and female adapters to 4 20 for North America or M6 for ROW Rest of World 2 Since the sensitive area is only mm in dimension ensure that either the head or the source assembly can be adjust in x y and aS necessary Z 3 Remove the thin screw on cap from the ND filter Do not unscrew the ND filter 2 4 1 Connecting the Camera Head 1 You can hot plug or unplug the head without damaging it in any way 2 Start the PC Connect the USB 2 0 between the head and the PC Booster cables or hubs are required for gt 5m 16ft look under Accessories at the website 3 Open the software The camera LED will sequence through to Green The software will automatically determine the camera type To start taking data click on the Go button or press F1 or g on the keyboard If there is no camera connected you will get the message No camera detected If the camer
127. ween live mode and saved data Beam 3 of 25 r Reset Averaging This button clears and restarts the averaging Print amp Print with Notes See p 3 23 alg P WinCamD Series Wavelength 632 nm __ Cliplevel uv 4Sigma Waist Astigm Total span 21 9 mm Waist Assymetry Current Z location 9 9mm___ sODiv Asymmetry T 3 4 Quick Start Tutorial This button accesses the M measurement feature used with the camera M2 mounted on the M2DU stage This is all described in a separate Data Sheet and User Guide available at the website Pe Log Data opens the Data Logging Control amp Status dialog box This allows you to log data to the hard drive save the results as a log file export the results as text or to Excel and recall the results as required Click on Setup Log to enter sample intervals and periods for up to three different sample intervals saving up to three files Press Show example 1 and Show example 2 to see how these boxes should be filled in If you enter multiple sample rates but use the same file name the program will log the two or three sample sets sequentially into the single log file Setup Logging LOG EVERY 3 5 SECONDS FOR 2 5 HOURS AS MyShortT ermFile log browse M Log enabled data only THEN LOG EVERY 35 SECONDS FOR feg forever HOURS AS MyLongT ermFile log browse j Log enabled data only THEN LOG EVERY SECONDS FOR blank 0 HOURS AS browse Log en
128. y maintains a network of knowledgeable Distributors and Representatives and also offer direct product support Contact details vary with time and therefore have not been included here Visit the website for a complete listing Service Returns RMAs Repairs Equipment Problems Recalibration If you did not receive the product directly from DataRay contact the vendor directly If you did receive the product directly from DataRay see the current procedure for returning product for repair posted at the website under Returns Repairs in the Sales amp Support menu The simple steps below are designed to minimize the number of calls that you need to make minimize time to handle the issue minimize your costs and our costs and get you back to a working system as soon as possible Current support contacts are at the website Remember Q There is a three year product warranty on all standard DataRay manufactured product excluding customer damage Third party manufactured items normally carry a one year warranty Outside the warranty period there is a reasonable minimum repair charge that covers many issues other than customer damage Q Repair turnaround time target is 5 15 working days Q If you purchased this product via a distributor if you obtain their agreement you may be able to ship the product directly to DataRay for repair 1 Clearly identify the problem and write it down Have the name contact number amp email address of the
129. y set the exposure iM Enable auto exposure adjustment uncheck Enable auto exposure adjustment Exposure Limits W Enable limits Curent exposure 100 000 me MIN 0 040 ms Mas 100 000 ms Cancel GFE CCD Comet Tail Elimination This button will be added in a future release At short CCD exposures and gt 900 nm a vertical comet tail may appear This is an unavoidable feature of high resolution CCD chips Incident light leaks through the metal over the vertical transfer register The effect is worse at longer wavelengths and for beams incident at other than normal incidence To eliminate the tail select the CTE button in the toolbar In addition Use exposure times gt 0 5 ms wherever possible Ensure that the light is incident close to 90 Tune the angle Set up a Capture Block appropriate to the size of your beam Use Inclusion region settings to exclude the tail region from the calculation a Rotate the crosshairs from 0 to move the measured profile off the tail WinCamD Series 65 3 4 Quick Start Tutorial 3 5 Short Cuts Keyboard Short Cut keys are tabulated below Some require hardware to be present Starts active image acquisition Page Up Access previous image Stops active image acquisition Page Down Access the next image Alt F4 Exits the program Selects absolute position display Opens Camera Setup Selects both profiles Centers the profile in the g
130. zip addresses Visual Basic interfacing and includes a sample VB program WCBinary h describes the structure of the Save current data as binary image file The Active X Name amp ID of the particular result box is given in the top blue line of the dialog box Button color dialog box found by right clicking on any particular result Button colors for u_WinCamD_Width_at_Clip 1 ID 78 x Button colors press color to change Normal Text Pass Text Fail Text Invalid Text BackGround ae Ox0 Os 000 Ox6600FF OxSUFF OxE OE QDE Q Set to defaults Cancel 24 WinCamD Series Installation 2 6 Firmware upgrades U What is Firmware Firmware is software code that resides in the hardware rather than running on the PC Upgrades may be required to improve performance add features and or to correct a bug UO How frequent are upgrades Firmware upgrades may happen during the year following introduction of a new product or a major upgrade Subsequently they are rare events How do I know if a necessary upgrade is available Register your product at www dataray com support prodregform html we will contact you WinCamD Series 25 2 4 Installation 26 WinCamD Series Quick Start Tutorial CHAPTER THREE QUICK START TUTORIAL 3 1 MAINS C CEN cece eeeee eee neni ee teehee E A iii eee aa a 28 ETA Stat Me SOM Wal E ernie aaia iaaa 28 3 1 2 Examine Previously Saved Data vec 22522552002 a3e45265 2255409257

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