View Spectroradiometer User Manual
Contents
1. 1 3 temp3g Hy temp3p 1 3 25 for each colour in E temp3c 1 0 temp3c lt 0 E E 1 0 temp3c 1 temp 1 temp2 temp1 6 0 temp3c temp3c 1 6 _ temp2 1 6 lt temp3c lt 1 2 templ temp2 temp1 6 0 2 3 temp3c 1 2 s temp3c lt 2 3 temp temp3 c gt 2 3 HSV to RGB 2 Hi floor H 60 96 6 f H 60 Hi p V 1 S V 1 f 5 t V 1 1 0 S case 0 then R V G t B case Hi 1 then R q G p case Hi 2 then R p G V B t case Hi 3 then R p G q B V case Hi 4 then R t G p B case Hi 5 then R V G p B Lab to XYZ for each D in X Y Z and d in x y z D dD dln frre I fese rot 16 1169 L gt Lake lt e a 500 fy f b 200 L 16116 y gt e 5 16 116 yze e 0 008856 903 3 26 Lab to LCH ab C ke H tan b a LCH ab to Lab 8 b CsinH LCH uv to Luv 8 CcosH v CsinH Luv to LCH uv L L 0 tar v u Luv to XYZ 514 X z d b a c us 1416 1163 Ees lt 7 1 3 52L u 131120 1 b 5Y c 1 3 dz Y 39L v 13Lvo 5 4Xw Xw 15Y y 3Zy vo 9Yw Xwt 15Yw 3Zy 27 e 0 008856 903 3 RGB to HSL 4 R G B all in the range 0 1 max is the maxim2. R 0 3073 C 34 25 VN B 149 45 0 8051 h fims Coleus 10 07 u Loes b v 2075 C 1036 2247 Hom H 1 26 510 51 v 0 1 ja zent b Save a Laad Coos Tenpetae e 1 RB Coordinates Leb Cul cur Conper bon Deewmank wavelength 477 Wes 0302713 0229010 I Red 044 a3 p 1 lo Porky e r RE Suratin 121 03 ae ec df RB Triangle Ytersection Geen 10 15 ans fo D x 0 2116 n Se RENI Vues DekaE 0 nkersect y 0 2218 a 1931 CIE Colour Diagram displays RGB triangle white point and user defined point via spectrum or right panel When the user defined point is outside the RGB triangle the line connecting the user point and the white point is displayed b Save Image Image can be saved in BMP JPG or PNG format c Save Colour data can be saved in a txt file d Load LUZCHEM power spectrum files can be loaded for analysis 19 e RGB Coordinates The x chromacity diagram coordinates of each colour are displayed Clicking the Set RGBW Values button opens a dialog wherein different values for RGB and White Point can be set They can be selected from numerous existing RGB values more than 15 including Adobe RGB Beta RGB ColorMatch CIE sRGB and white points more than 25 including 1931 D50 1964 D50 1931 D65 and 1964 D65 or user define
3. v 9Y X 15 37 uy 4Xw Xy 15Yy 374 Vw 9Yw 15Yy 37 e 0 008856 7 903 3 XYZ to RGB r g b X Y ZIIM for each colour C in G B and c in g b Typical C sc SRGB elt c 0 0031308 1 055 1029 0 055 c gt 0 0031308 gamma for RGB working space M see Computing XYZ to xyY x X X Y 7 y YK X Y 7 YzY Additional Computations Dominant Wavelength 19 The dominant wavelength is the closest monochromatic wavelength with CIE colour coordinates on the line formed by connecting the white point and the test colour point and extending it to infinity in both directions 30 Colorimetric Purity x Euclidean distance from the test colour to the white point y Euclidean distance from the colour coordinates of the dominant wavelength to the white point pe excitation purity Pe colorimetric purity ya y value of dominant wavelength y value of colour pc ya Ye RGB Saturation gt Brightness u R G B 3 Saturation s s G p B p 3 CMYK RGB in range 0 1 C 1 R M 1 G Y 1 B min C M if K I C M Y 0 otherwise M M K 1 Yz Y K y 1 K Delta E E is the Euclidean distance between the 2 colours Each colour is treated as a 3 dimensional Lab coordinate For colour 1 Li a1 bi and colo
4. RGB value is outside the range 0 255 i Additional Data Dominant wavelength complementary wavelength XYZ colorimetric purity and RGB saturation are calculated and displayed Fields appear greyed out if they can not be computed or they are subject to significant error Additionally dominant and complementary wavelength will display NaN and appear greyed out if they lie on the purple line j RGB Triangle Intersection The intersection of the RGB triangle and the line formed by connecting the white point and the user defined colour displayed on the Colour Diagram If the user defined point is inside the triangle its intersection is itself k Clear All All colour values can be cleared Data Source Users can compute all colour values from one colour value source of their choosing Enabling a data source will disable all other entry fields m Exit Quit the Advanced Colour Features Dialo g Options Menu Image Options A dialog is opened wherein display options can be defined for the Chromacity Diagram See diagram below Image Options line width j 1 line style 3 0 point size 9 3 Display Corner Labels 21 6 The Advanced Illuminance features can be accessed by clicking the Illumination Advanced button on the Spectroradiometer tab These features are for users that would like a more in depth analysis of illuminance Default options or user preferences can
5. acquisition must be greater than acquisition time Please check settings and try again Figure 3 9 Error message following selection of incompatible parameters for a timed acquisition 3 7 5 If integration time transmission delay number of samples is greater than the acquisition interval an error will occur In this case either the integration time or the number of samples to average must be decreased so that integration time transmission delay number of samples is less that the acquisition interval Transmission delay is approximately 12 ms 3 7 6 The acquisition interval can be as low as 0 1 seconds Any lower and an error message will appear 3 7 7 When all parameters are set press the Start Timed Acquisition button 3 7 8 H the acquisition interval is less than 1 second the top graph will not be updated as the acquisition occurs This is to save processor resources However if the interval is greater than or equal to one second the top graph will be updated at each acquisition The current time can be viewed in the box in the bottom left hand side of the graph 15 3 7 9 If the acquisition interval is equal to or greater than 10 seconds a timer will appear in the bottom left of the graph counting down the seconds to the next acquisition 3 7 10 The acquisition can be stopped at any time by pressing the Stop Timed Acquisition button 3 7 11 When the acquisition is finished a dialog box will appear and
6. be used for all calculations and display If a power spectrum has been produced with the spectroradiometer the program will use the current power spectrum as the default values for evaluation Additional power spectrums can be loaded and evaluated from the Advanced Illuminance window Sector UserFhatackc Lux bs ree Foctesndes m n z 2 User Scotopic 1176 961 Photopic 9 42 488 Oe Oe n Usse From des denn 250 369 Scotocic Total O Me Scobopic User from Oe to 3 0 Lead Furetions a Graph Graph displays photopic scotopic illuminance User specified ranges appear as solid colours on the graph b Total Illuminance The total integrated photopic and scotopic illuminance is displayed as well as the total illuminance in the user defined range c User Range Enter a wavelength range for analysis The total illuminance for that range will be calculated and displayed The specified range will appear as a solid colour on the Illuminance graph d Load View Luminosity Functions Standard Luminosity Functions can be viewed numerically and graphically Luminosity functions to be used for evaluation can be selected from a list or loaded from user defined files User defined Luminosity Function File Format Line 1 Line of information Line 2 and on number pairs separated by tabs wavelength V
7. www cvrl org database text lum ssvl2e_1 htm 33 10 degree Cone Photopic http www cvrl org database text lum ssvl10 htm 1924 CIE Photopic http www cvrl org 1974 CIE Photopic http www cvrl org 1988 CIE Photopic http members misty com don photopic html 1951 CIE Scotopic http www cvrl org database data lum scvle_1 txt References 1 http en wikipedia org wiki Luminosity function 34
8. 2 4 In addition to verification of the wavelength the verification lamp is useful in determining the integrity of the optical fiber Typically the intensity that is before conversion to a power spectrum should be between and 50 and 150 counts at 254 nm for an integration time of 1000 ms Figure 2 4 Positioning of the detector head on the verification lamp If the counts at 254 nm are significantly less than 50 change the batteries alkaline batteries are recommended If the problem is not resolved by this it could be an indication of a ruptured fiber in this case contact Luzchem for advice Lamp usage for verification purposes normally does not exceed a few minutes and batteries last about 12 hours of actual usage Figure 2 5 shows a representative discharge curve under continuous operation Verification lamp discharge monitored at 254 nm Power mWm nm 0 10000 20000 30000 40000 Time seconds Figure 2 5 Verification lamp discharge curve monitored at 254 nm 3 Software Instruction manual 3 1 General The purpose of this Section is to provide training on the acquisition and viewing of spectra This application can acquire information at timed intervals ranging from 1 10 of a second to hours In order to establish the best possible integration time the spectroradiometer application is equipped with an Optimize Integration Time function This function searches for the best integration time for the intensity of th
9. 8 XYZ to Colour EE 29 XYZ EE duni uu LI 29 XYZ EE EEN 20 EE 20 Additional E E 30 Dominant Wavelength entree UE 30 Colorimetric Purity EE 31 e 31 CMYK 7 31 DeltaE 31 SOULCOS METTE T SCENE EENEG 31 CIE 2 55 10 degree C ME noue eec oe rs metodo cep 32 Ee EE 32 RGB W EE EE 32 1931 CIE Chromacity Coordinates o ee 32 References amp Sources rea et enen NN oorr au dateen dora aaa nn reae Ra sessaundsoasseadeccsiassevaces 32 24 Overview This section provides the formulas and data used to calculate values in the advanced Colour Features dialog included with LUZCHEM s Spectroradiometer software Conversions Colour Temperature to xyY 46070 ies 29618 106 0 09911 103 0 244063 4000 lt T lt 7000 2 0064 19018 0 24742 105 0237040 7000 lt T lt 25 000 x is inaccurate if T lt 4000 or T gt 25 000 so the colour fields will appear greyed out When T lt 4000 the first formula is used and when T gt 25 000 the second formula is used 3 000 2 870x 0 275 Computing M Used for RGB to XYZ and XYZ to RGB conversions M Sake 5Y Zeile Dele Sele Dk 5 for each colour C in R G W Xl yc y Le 1 yo yc Sy Sg 5 Xw Yw Zw HSL to RGB 0 5 1 5 1 6 1 gt 0 5 Hy H 360 temp3g
10. Sample File Photopic Luminous Efficiency CIE 1988 380 0 0005890000 381 0 0006650000 382 0 0007520000 383 0 0008540000 22 0 0009720000 0 0011080000 386 0 0012680000 387 0 0014530000 388 0 0016680000 389 0 0019180000 0 0022090000 e Save File is saved in tab delimited format so it can easily be inserted into a spreadsheet Save File Format Line 6 Timestamp Date and Time of Save Line 7 Line 8 Total Photopic Illuminance Line 9 Total Scotopic Illuminance Line 10 Line 11 Wavelength Photopic Scotopic Line 12 and on tab separated values associated with the column headers from line 11 f Load previously acquired LUZCHEM power spectrum files can be loaded for analysis g Exit Quit the Advanced Illuminance Features Dialog 23 Appendix A Advanced Colour Features Technical Specifications Elei 25 ConverslOns Oda ue 25 Colour Temperature to annen ante assi capi trame 25 ctae id 25 HSL io ROBO iet eM 25 EEN RGB ae beata dei torte am Cosas 26 Labdo GN ki o cuu etie Coes SNA dera Ta Tae aah ie PEE er ae 26 E E ET 27 EE 27 LCH uv to Luv eel tase c elc n t Eum Dolci E 27 Luv to LCH uv d ovas teu Lr cq c E d nd 27 Do NES E Ces 27 RGB Id PF 28 RGB HSV eebe 28 RGB WZ eenen EAT 2
11. Shedding bight on new ideas Spectroradiometers Instruction manual SPR 4001 SPR 4002 and SPR 03 Version 3 1 October 2006 Copyright Luzchem Research Inc Table of Contents EE un TR nee ESO udis dut tres ut ORS du 3 1 1 Models S PR 4001 and SPR 03 siste DU WU PHA I NODE PURIS SUUS 3 127 Model SP EEN 3 2 Understand your ee E 4 Zal Detector head ier uia e M Re e cct 4 SEET 5 Dd ee 6 EE 6 2 5 Verification lamp model SPR 4001 only 6 3 Software Instruction manual iin eege 8 RENNES ICH EET PET ES 8 3 2 SoftWare Installation ene bd eid acid ate a 8 94 UAT ENED The SOU ALS e 9 3 5 Optimize Integration Time RSS URBES 10 39 9 Power Intensity Spectra red 10 3 6 Data reliability evaluation soe aste Ur E edd 12 SEEN inicie neten E 14 3 8 File Formats e 16 HCN feces cai cas EE 18 Di Advanced Colour EE 19 6 Advanced luminance nnee tos dea eed 23 Appendix A Advanced Colour Features Technical Specifications 24 Appendix B Advanced Illuminance Features Technical Specifications 33 1 Initial set up 1 1 Models SPR 4001 and SPR 03 The Spectroradiometer models SPR 4001 and SPR 03 consist of three parts e The control module and detection fiber e The detection head light integrating module e A USB cable Ass
12. Technical Specifications 33 OVERVIEW c 33 Conversion of Power to Illuminance eee e eee ee eee eee eene eene eene nente eese ses sesta esee esee eae 33 Illuminance at an individual wavelength 33 Ill minance 1n specified range sss ci cea tb ict ebd Renee eee ne ted ose DES 33 Lux to Foot candle conversiOn nene nene aeneae 33 Luminous Efficiency Function Sources eese eene senes ese sese sese ne 33 2 degree Cone PhOLOPIC siue eese enke 33 LO desree Cone PhotOplC5 i oett reete e EO RERO ertet ep RO en EE tee aee ake 34 1924 Neu 34 1974 CIE PhOtODIC ins erret rr E Ep epit EES 34 1988 CIE re e 34 SCOTOPIC versen 34 REGO CNCES H n 34 Conversion of Power to Illuminance D 1 Illuminance at an individual wavelength F 683 I V wavelength nm F at mlx m42nm Standard Luminosity Function I Power at mW m 2nm V z Value of Luminous Efficacy Function at e e pe 1 Illuminance in a specified range F S1 Lux to Foot candle conversion 10 76 Ix 1 fc Luminous Efficiency Function Sources 2 degree Cone Photopic http
13. alibration at wl e Line 13 Wavelength w2 tab Calibration at w2 e one nm wavelength interval is required Also a calibration wavelength should exist for each wavelength in the acquisition If a desired wavelength does not exist in the calibration file the resulting waveform will produce a zero at that wavelength 3 5 9 Once the calibration file has been chosen press the Power Spectra button A power spectrum will then appear on the Display graph On the left is the power in the UVA UVB UVC Visible and user selected spectrum Figure 3 4 These spectra can be viewed on the display graph by checking the radio buttons to the left of the numbers Figure 3 5 f 991 129 User mw m from 3 500 to 3 600 Figure 3 4 Definition of a customer selected integration range 11 250 300 350 400 450 500 550 600 650 700 750 800 Wavelength nm Linear gt Log Figure 3 5 Shaded display of a selected integration range 3 5 10 Luminance lux and Color Temperature K are also displayed below the user selectable power spectrum controls 3 5 11 Intensity spectra can be created using the Intensity Spectra button This will transfer the data from the acquisition graph to the display graph where it can be saved UVA UVB UVC visible spectra luminance and color temperature cannot be viewed 3 5 12 To save the spectrum press the Save Spectra button located below the graph This will save the graph in a tab d
14. ask you whether you would like to save the current timed acquisition If you wish to save press yes if you do not wish to save press no The acquisition can be saved later Timed acquisition files can be quite large and may take a few seconds to load and save 3 7 12 In order to extract a kinetic trace choose a wavelength on the bottom left hand side of the screen Next press Save Kinetic Trace The line of information will be saved with the file 3 7 13 In order to extract a spectrum from the timed acquisition choose the time at which you wish to extract the spectrum Next press Save Spectrum The line of information will be saved with the file The file will also be transferred to the Spectroradiometer tab where it can be edited and manipulated 3 7 14 The entire timed acquisition can be converted to a power file This can be done by choosing an appropriate calibration file Either Luzchem s supplied calibration or a user calibration file Next press the Convert to Power button to calibrate all of the data 3 7 15 For file formats please see the File Formats section 3 8 File Formats The spectroradiometer saves four types of files spectrum files timed acquisition files kinetic traces and spectrum files extracted from a timed acquisition Below is a summary of the information contained in each file 3 8 Spectrum Power File Line 1 Spectroradiometer tab Intensity Power depending on spect
15. ation file If desired optimize integration time by following steps above Navigate to the Spectroradiometer tab Acquire a dark reference by turning off the source lamp or by blocking the light input Open the light input window and acquire a sample Note that the data that is viewed on the acquisition graph can be changed by using the radio buttons beneath the graph 10 Dark e Sample e Sample Dark Figure 3 2 Radio buttons select the sets of data displayed 3 5 6 create a power spectrum from the desired data an appropriate calibration file must be chosen To use Luzchem s calibration file select Use Luzchem s Supplied Calibration from the calibration drop down menu If this option is not available it mean that the spectroradiometer serial number that is attached does not match the calibration serial number 3 5 7 To use your own calibration file select Use calibration from File and then press the Browse button or type in the path to the calibration file Calibration File Figure 3 3 Selection of a calibration file other than the Luzchem file built into the control software 3 5 8 The calibration file must be a per millisecond text file with the following format e Linel Calibration Merge File e Line 2 4 Information you wish to save e 5 Minimum Wavelength tab Maximum Wavelength e Line6 11 Information you wish to save e Line12 Wavelength wl tab C
16. counts The SPR 03 saturation level is approximately 16000 counts 3 4 1 3 4 2 3 4 3 3 4 4 3 4 5 3 4 6 Navigate to the Start Optimize Integration tab Press the Start Optimize button Turn on the light and press Start Optimize Note that the optimize function does not require a dark measurement The application will test different integration times in order to find the best one Once the optimization is done a dialog box will inform the user of the optimized integration time If the integration time is less than 1 or greater than 1000 a warning message will appear If the optimized integration time falls in an acceptable range all integration times in the program will be set to this value The user can override these values If the signal saturates at 1 ms integration time the use of an attenuator is highly recommended See section 2 4 3 5 Power Intensity Spectra Power or intensity spectra can be acquired alone or extracted from a timed acquisition file This section will cover acquiring a spectrum by itself 3 5 1 3 5 2 3 5 3 3 5 4 3 5 5 Definitions An intensity spectrum is a plot of counts against wavelength it shows the raw data acquired by the detector it does not use energy units A power spectrum shows the energy distribution as a function of wavelength the Luzchem system displays this in units of mW nm An intensity spectrum can be converted to a power spectrum by using a calibr
17. d working spaces can be defined and saved sRGB is the default Double click to select BL Adobe RGB 1998 0 3127 329 Apple RGB 0 31271 0 32901 Best RGB 0 34567 0 3585 Beta RGB 0 34567 0 3585 Bruce RGB 0 31271 0 32901 CIE RGB 0 33333 0 33333 ColorMatch RGB 0 34567 0 3585 Don RGB 4 0 34567 0 3585 ECI RGB 0 34567 0 3585 Ekta Space 55 0 34567 0 3585 NTSC RGB 0 31006 0 31616 PAL SECAM RGB 0 31271 0 329011 ProPhoto RGB 0 34567 0 3585 Open Different Fie Delete Data Source Title White x White y Common White Points 9 0 0000 3 0 0000 User Defined DSO CIE 1931 0 34567 0 35850 E Red x Red y DSO CIE 1964 0 34773 0 35952 E Le i 9 cigo 3 0 0000 Gamma Green x Green y 3 22 9 0 0000 3 0 0000 Blue x Blue y 0 0000 90 0000 f Colour Comparison E is calculated using the two colours L a b values g CIE Colour Matching Function Either 2 or 10 degree colour matching functions can be used for evaluation of spectral data h Colour Values Common colour values are calculated and displayed based on the data source selected Data can only be entered in fields with a white background Available values Spectral Data XYZ RGB xyY Lab LCH ab Luv LCH uv HSV HSL and Colour Temperature Fields appear greyed out if they can not be computed or they are 20 subject to significant error CMYK HSV and HSL values are all set to zero if any
18. e incident light In order for the spectroradiometer application to be able to acquire data it needs to be connected to the spectroradiometer instrumentation However it can be used independently to view previously acquired files The application also requires that the LabVIEW run time engine be loaded in the computer in use The LabVIEW run time engine is provided in the installation package 3 2 Software Installation 3 2 1 Ensure the latest Java Runtime Environment JRE is installed on your computer Available for free from Sun Microsystems at http java sun com javase downloads index jsp 3 2 2 Insert the SPR installation CD into your CD ROM drive 3 2 3 Navigate to your CD using My Computer 3 2 4 Select the Installer folder and then Setup 3 2 5 Follow the installation instructions 3 3 Connecting the hardware 3 3 1 Connect the USB cable from the spectroradiometer to your computer 3 3 2 Your computer should detect the new hardware and find the drivers automatically If not go to Control Panel Add or Remove Hardware Then install the hardware by searching for drivers on the CD provided with the spectroradiometer 3 4 Starting the software 3 4 Ensure your Luzchem spectroradiometer is connected to your computer Please note that the application is only compatible with the spectrometers sold by Luzchem If the software does not recognize the spectrometer it will give an error message and close 3 4 2 To s
19. e number of counts below which the data is judged unreliable Note that when the data is labeled as unreliable it only means that the numeric value posted in the front window may have considerable error however in general it is a good assumption that for practical purposes the value is very small or zero In regions where there is essentially no light one expects points with very small values showing a random distribution around zero i e 5096 of the values could be negative This is normal To improve the data increase the number of averages increase the integration time and ensure that the dark measurement totally prevents light from reaching the detector In the UVC region it is possible that some light sources or materials eliminate all light at the short wavelength range such as wavelengths below 250 nm While the instrument range is 235 to 850 nm for the SPR 4001 and SPR 4002 or 235 to 1050 nm for the SPR 03 you may want to reduce the range to one that is more appropriate to your own light sources You can do this in the main screen 13 Evaluate Data Reliability i On Label data as unreliable gray color if over Jno of the data points in region have less than 1 count s in the intensity file Return to Default Values Figure 3 7 Data reliability evaluation turned on Two controls set the criterion for data evaluation 3 7 Timed Acquisition The timed acquisition tab is very useful if you wish
20. elimited text file that can easily be opened with most spreadsheet and graphing applications Please see the File Format section for the formatting of the intensity power file 3 5 13 Once the spectrum is saved it can be opened at any time by using the Read File button An intensity spectrum can be opened and converted to a power spectrum In this case it is essential to use the calibration file applicable at the time of acquisition 3 6 Data reliability evaluation A switch on the left lower main screen allows this option to be turned on and off The default as the program starts is ON Figure 3 6 shows this control 12 Evaluate Data Reliability saa UVA mwm UVB 7 UVB Limit G 20 UVC mW 315 nm lt __ 320 nm 1807 26 Visible fe 583 137 User mw m from 1 450 to J 550 Figure 3 6 Data reliability evaluation turned on Note gray values when the criterion set in the optimize tab is not met The data are shown in grey when they do not meet the significance criterion set in the optimize tab If should be noted that Luzchem sets a very high standard as a default users should set values that meet their own requirements This is done in the Optimize tab where you will find in the left region the menu of Figure 3 7 You have three options An ON OFF switch serves the same function as that on the main window e The percent of the data that must meet the criterion e Th
21. emble the instrument as indicated below The connection of the blue fiber optic cable to the detector should be finger tight Do not use any tools and do not force The calibration parameters for your instrument have been determined with the same components with which it was supplied Individual parts are not interchangeable Optical fiber USB cable Verification Detector lamp Control Module Figure 1 1 Schematic diagram for SPR 4001 and SPR 03 Optical fibers are fragile and cannot be bent at any angle The minimum momentary bent radius is 60 mm and the minimum long term bent radius is 100 mm 4 inches Assemble your instrument as indicated above and connect the USB cable to an available port in your computer Software installation is explained in Section 3 of this manual 1 2 Model SPR 4002 The Spectroradiometer model SPR 4002 consists of two parts e The control module that with its built in detection head light integrating module e A USB cable SPR 4002 is sold fully assembled Only the USB cable needs to be installed and connected to the computer Software installation is explained in Section 3 of this manual Figure 1 2 Spectroradiometer models S PR 4001 left and SPR 4002 2 Understand your hardware 2 1 Detector head Figure 2 1 shows the assembly of the detector head or light integrator The detector is constructed of PTFE encased in light scattering aluminum and has been designed for maximum eff
22. iciency in a low profile integrator Figure 2 1 Assembly of the detector head The top of the integrator has solid cover that can be used when monitoring the dark background We have found it convenient to leave one holding screw loosely in place and simply rotate the cover to monitor dark and light signals see Figure 2 2 Figure 2 2 Closed and open detector assembly as used in Model SPR 4001 and SPR 03 It is important that you do not allow dust or other materials to fall inside the detector head this would invalidate the calibration provided by Luzchem The bottom of the detector head has a threaded hole 1 4 20 threads that can be used for mounting the detector very thin aluminum plate protects the PTFE compartment from damage by objects inserted through the mounting hole The maximum penetration is 3 mm Do not force screws to penetrate more than this since they can damage the integrator compartment 2 2 Spectrometer The heart of Luzchem spectroradiometers is a 3648 element spectrometer contained in the control module It covers a minimum range of 235 to 850 nm in the SPR 4001 and SPR 4002 a minimum range of 235 to 1050 nm in the SPR 03 and has optical components to optimize ultraviolet detection Data points are acquired about every 0 3 nm however the software converts the data so that points are displayed at 1 nm intervals The spectrometer is quite robust and ideal for field work and wherever portability is impo
23. r of spectrometer Spectrum at time time at which spectrum was extracted Wavelength tab Intensity tab Power Wavelength wl tab Intensity at wl tab Power at wl if applicable Line 13 Wavelength w2 tab Intensity at w2 tab Power at w2 if applicable 17 4 Help To access the in program help click on the Help button or navigate to Help gt Topic Help on the menu bar 18 5 Advanced Colour Features The Advanced Colour features can be accessed by clicking the Colour Advanced button on the Spectroradiometer tab These features are for users that would like a more in depth analysis of the colour properties of their light source If a power spectrum has been produced with the spectroradiometer the program will use the current power spectrum as the default values for evaluation Additional power spectrums can be loaded and evaluated from the Advanced Colour window In addition to spectral analysis the dialog can evaluate colour data gathered from a variety of sources Advanced Colour Diagram Screen Capture For details about the individual components of the dialog the numbers black square containing white letters displayed in the screen capture refer to the list below the image CIE Colour Mat cin Fure ten Z eger CL e 10 degen ear 4 n 0 2110 zer has 072218 Data ure n z 10290 Ime ONI
24. rtant However it should be protected for water and high temperatures Stray light is quite low for example 0 0596 at 600 nm 0 1096 at 435 nm and 0 1096 at 250 nm The grating used has 600 lines mm and has been blazed at 400 nm Spectrometer control is achieved via the USB port no other source of power is required to operate the spectrometer 2 3 Fiber optic cable The fiber optic cable connecting the spectrometer to the detector head is an integral part of your instrument it is fully enclosed in the spectroradiometer model SPR 4002 and instrument calibration is dependent on the fiber used The fibers used are terminated with SMA connectors that have been carefully polished to achieve adequate optical performance Luzchem uses high OH fibers to optimize ultraviolet performance For model SPR 4001 the fiber used is 300 um in diameter and the SPR 03 uses a 750um solarized fiber The minimum allowed momentary radius is 60 mm 2 5 inches and the minimum long term radius is 100 mm 4 inches Bending the fiber beyond these limits can cause permanent damage that also invalidates the calibration factors Fiber replacement requires recalibration of the instrument Instructions for SPR 4001 and SPR 03 When installing the fiber the connection should be finger tight Do not use tools for this purpose The female SMA connector on the detector head should not move when installing or disconnecting the fiber It has been installed wi
25. rum type saved Integration time tab Samples to average Minimum wavelength tab Maximum wavelength Line of information Serial number of spectrometer Wavelength tab Intensity tab Power Wavelength wl tab Intensity data at wl tab Power data at wl if applicable 16 Line 12 Wavelength w2 tab Intensity data at w2 tab Power data at w2 if applicable In an intensity file the column for power data will be blank 3 8 2 Timed acquisition file Spectroradiometer Timed Acquisition Intensity Power Integration time tab Samples to Average Minimum wavelength tab Maximum wavelength Line 5 ine of information Wavelength array separated by tabs Time array separated by tabs Spectrum at time tl separated by tabs Line 13 Spectrum at time t2 separated by tabs erial number of spectrometer 3 8 3 Kinetic Trace Spectroradiometer Kinetic Wavelength at which the kinetic trace was taken Line of information erial number of spectrometer ime per point sec Time tab Power Intensity Time t1 tab power intens ity at t1 Time t2 tab power intensity at t2 3 8 4 Spectrum extracted from timed acquisition Line 1 Spectroradiometer Spectrum tab Intensity Power depending on the type of spectrum saved Integration time tab Samples to average Minimum wavelength tab Maximum wavelength Line of information Serial numbe
26. tart the spectroradiometer application select the application in the Program Files folder create a shortcut on the desktop right click on the application and select Send to gt Desktop create shortcut 3 4 3 The first time you run the spectroradiometer software a Configure Hardware window will appear see figure 3 1 below Select the following values in the drop down menus Spectrometer Type 54000 A D Converter Type 0584000 SPR 4001 and SPR 4002 HR4000 SPR 03 If your version of the software displays a Serial Number dialog ensure your spectrometer serial number is highlighted usually located at the bottom of the list Configure Hardware Ocean Optics Windows Device Driver Version 4 11 3 Spectrometer Type 51000 51000 1000 A D Converter Type C500 PC1000 Base Address 1 0 Range IRG Interrupt Request 768 0x0300 z m Figure 3 1 Configure Hardware window 3 5 Optimize Integration Time The optimize integration time function tests the intensity of the light and searches for an appropriate integration time This function is important because if the integration time is too short the data is susceptible to errors introduced by noise If the integration time is too long the spectrometer can saturate and the data above the saturation point will be a flat line For the SPR 4001 and SPR 4002 the spectrometer saturation level is approximately 65000
27. th a special adhesive that under normal force conditions will prevent the female connector on the detector head from moving If this connector moves it will be necessary to reinstall it matching exactly the calibration distance Contact Luzchem for assistance 2 4 Attenuator Luzchem spectroradiometers are supplied with a PTFE film attenuator that reduces the light input by about one order of magnitude A generic transmission curve is supplied with all attenuators Luzchem can perform a custom NIST traceable calibration for the attenuator supplied with the system For many applications the attenuator is not essential however for some solar and sunbed applications the attenuator may be useful to increase the dynamic range of the instrument 2 5 Verification lamp model SPR 4001 and SPR 03 Model SPR 4001 and SPR 03 includes a low pressure mercury lamp that operates with 4 AA batteries The lamp is controlled by a switch at the back of the instrument This switch does not need to be on to operate the radiometer but only to use the verification lamp The verification lamp has the spectrum of Figure 2 3 this is a power spectrum with a characteristic band at 254 nm that should be within 1 nm of the wavelength read Power mWm N A o 500 600 Wavelength nm Figure 2 3 Power spectrum for the verification lamp The correct positioning of the detector on the verification lamp is illustrated in Figure
28. to see how the intensity of a lamp or light source changes over time It is very important to check your power management options before performing a timed acquisition that will be left alone for long periods of time To turn off standby or hibernation e Navigate to Start gt Settings gt Control Panel Click on the Power Management icon Set system standby to Never Set hibernation to Never Please be aware that some operating system will not have a hibernation option e Click Apply and or to save the settings and exit the power management window To perform a timed acquisition 14 3 7 1 If desired optimize the integration time by following the steps outlined in the Optimize Integration Time section Note that the detector will saturate if the intensity increases by more than 60 during the timed acquisition Use a shorter integration time if this is likely 3 7 2 Press on the Timed Acquisition tab 3 7 3 Set the acquisition interval and total acquisition time see Figure 3 8 Hours Minutes Seconds Acquire a sample every J 0 9 0 J 0 _ Acquisition interval Hours Minutes for 5 0 J 0 Ee Total acquisition time Figure 3 8 Selection of parameters for a timed acquisition 3 7 4 The Total acquisition time must be greater than or equal to the acquisition interval If this condition is not satisfied an error message will appear and the acquisition will be cancelled Figure 3 9 ERROR Total
29. um value of R G B min is the minimum value of R G B d max min undefined min 60 G Byd 60 B Ry d 120 max G 60 R Gy d 240 N B is measured in degrees and should be adjusted to the range 0 360 Hz min 0 min 5 Je min 2L 0 lt 1 lt min 2 2L RGB to HSV 3 12 max min undefined min 60 G Byd 60 B Ry d 120 max G 60 R Gy d 240 max B N B H is measured in degrees and should be adjusted to the range 0 360 H 5 max 0 1 min max max 0 V max RGB to XYZ X Z r b IM 28 for each colour C in R G B and c in g b Typical c C sRGB C 12 92 C 004045 0 055y1 0557 C gt 0 04045 gamma for RGB working space M see Computing M Spectral Data to XYZ 11 X S I x 51 Z S 1 2 2 I Spectral power distribution x y z CIE colour matching functions xyY to XYZ X xYly Y Y Z l x y Y y XYZ to Colour Temperature 8 Robertson s Method as presented by 8 XYZ to Lab 8 12 White Point Xw Yw Zw 116 fy 16 a 500 fx fy b 200 fy fz for each D in X Y Z and d in x y z _ 48 das ein dse d D D e 0 008856 903 3 29 XYZ to Luv 4 Jr yrs Ky u I3L u uy I3L v vw u 4X X 15 37
30. ur 2 12 b2 QE v Ly Loo ar bi b2 Data Sources 31 CIE 2 amp 10 degree CMF http www cvrl org cie htm White Points http en wikipedia org wiki White point RGB Working Spaces http brucelindbloom com 1931 CIE Chromacity Coordinates http www cvrl org cie htm ON See References amp Sources http en wikipedia org wiki CIE_1931_color_space http www cvrl org cmfs htm http en wikipedia org wiki HS V color space http en wikipedia org wiki HSL color space http en wikipedia org wiki Saturation color theory http en wikipedia org wiki Brightness http en wikipedia org wiki CMYK http brucelindbloom com http www colourware co uk cpfag q3 21 htm http en wikipedia org wiki Dominant wavelength http www fourmilab ch documents specrend http www cs rit edu ncs color t_convert html X YZ 20to 20CIELUV 20 amp 2620CIELUV 20to 20X YZ http www delta dk C1256ED600446B80 sysOakFil 1103 SFile I1032620Domina nt 20Wavelength pdf http www cs rit edu ncs color t_convert html X YZ 20to 20CIELUV 20 amp 2620CIELUV 20to 20X YZ 32 Appendix B Advanced Features Technical Specifications Overview This section provides the formulas and data used to calculate values in the advanced Illuminance Features dialog included with LUZCHEM s Spectroradiometer software Table Of Contents Appendix B Advanced Illuminance Features
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