User`s manual MEMS OCT PROBE
Contents
1. User s manual Version 1 0 2012 j Fh KRHA KARAN Wuxi WiO Technology Co Ltd Table of Content SAFE INSTRUCTIONS sucre 3 Ze Order NO nn ee 4 S ITEMS INGEUDED ae ass este 4 PRODUCT DESCRIPTION ze de 4 SHOW TOUSE TE ates ests Gate hn nana anna deed dae eta ea UR 5 B SPECIFICATIONS susanne Han 8 1 SAFETY INSTRUCTIONS Caution Before using your MEMS OCT probe please read this Safety Instructions section carefully All these safety measures assume a good knowledge of MEMS driving control and optical fiber protection and the more specific knowledge regarding the use of the MEMS OCT probe contained in this Manual 1 This unit must be used in strict conformity with the instruction contained in this manual The manufacturer rejects all liability if these rules are not followed or if the unit is used for any other applications 2 Any impact collision bumping or shock to a rigid object is a hazard to the unit The unit must be held carefully when it is delivered from one place to another place 3 Before the output voltage signals from the driving circuit board are applied to the unit the signals must be checked by an oscilloscope Make sure the signals match the parameters listed in Table 1 Table 1 Signals of the four channels Phase Duty Voltage V Frequency Hz i item Ratio ALR LTA O o oJ o 4 The voltage signal must be controlled from 0 8V to 3 5V which is the safe voltage r2. ze s OUT1 IN3 gt Wi Jed maa s we evens 7 Port out INA gt 198442 Fig 6 Driving control circuit board 5 Push down the power button to turn off the power and connect the electrical interface of the probe to the Port Out on the circuit board A1 A2 A3 and A4 should be connected to OUT1 OUT2 OUT3 and OUT4 respectively 6 Then connect the fiber interface to the light source 7 Turn on the power The probe should start to scan and an optical grating should be generated If a NIR or IR light source is used an IR card is needed to see the optical grating 6 SPECIFICATIONS Y WIOTECH A RARE Wuxi WiO Technology Co Ltd Add No 16 Chang Jiang Rd Suite 8905 New District Wuxi Jiangsu China 214028 Tel 86 510 81816400 Fax 86 510 81816884 Email wio wiowx com Website www wiotek com
3. mm Such a small probe can be inserted into the biopsy channel of a soft or rigid endoscope for in vivo diagnosis of internal organs lt can also be used separately for real time imaging during surgical operation This probe can be widely applied to optical coherence tomography OCT confocal microscopy diffuse optical tomography DOT and nonlinear optical microscopy 5 1 Fig 1 MOPS1 MEMS OCT probe Unique Features Applications o Large scan angle Microendoscopic imaging High scan speed Optical Coherence Tomography Low driving voltage Diffuse optical tomography High fill factor Photoacoustic imaging Custom design Nonlinear optical imaging Low cost O O O O O O O Oo HOW TO USE IT Before using the probe check the electrical resistances of the four terminals A1 A2 A3 A4 as shown in Fig 2 ensuring that the electrical resistances are all in the normal range 1000 5000 A digital multimeter can be used Note that the terminal linked to the brown line is Ground The resistance should be measured between one of A1 A4 terminals and Ground Fig 2 Electrical interface of the probe At first you need to generate four triangle or sine voltage waveforms as shown in Fig 3 and Fig 4 This can be done either by a function generator or a data acquisition card If you have any questions please contact the technical support of WiO 3 5V Frequency 0 5HZ Duty ratio 90 10 0 8V Fig 3 Standard waveforms o
4. ange for the normal operation of the MEMS device 5 Both visible and near infrared light can be fed into the optical fiber of the unit Visible light can be used to check the scan pattern and the location of the illumination spot 6 Keep the optical window of the probe clean and scratch free The window surface may be wiped with cotton swab gently if the window becomes dirty 7 Keep the fiber interface clean and the cover for the fiber end must be put on whenever the unit is not in use 8 Only the unit manufacturer or dealer is qualified to carry out repairing 2 Order NO WiO 32 20 5 S3501 FC APC EDO Connector type FC PC FC APC or NC een Diameter of the probe and the serial number been NUN A A BESES KNEE A ENES Specification of GRIN lens module END MEMS type a eel PN BE o o PA OA AA Company name 3 ITEMS INCLUDED The MEMS OCT probe is a 2 axis optical scanning probe for imaging and measuring After checking the package please keep it for damage open the box and you should find the following items e One MEMS OCT probe e One driving circuit board e One adapter DC 12V e One 850nm laser pen with FC interface Optional for order 4 PRODUCT DESCRIPTION WIO s MEMS 2 axis optical scanning probe employs a 2 axis MEMS mirror with low drive voltage large range and high fill factor The outer tube is made of robust and biocompatible stainless steel The probe outer diameter can be made as small as 2 4
5. f A1 and A3 Aland A3 are out of phase 3 5V Frequency 50HZ Duty ratio 50 50 0 8V Fig 4 Standard waveforms of A2 and A4 A2 and A4 are 180 out of phase 3 Here you have two choices If you just want to check how the probe works please skip step 4 and step 5 and directly connect the signals generate in step 2 to the probe Please pay attention to the order of the signal lines A1 and A3 should be connected to the voltage waveforms shown in Fig 3 and A2 and A4 to the waveforms shown in Fig 4 4 If you want to connect this probe to an OCT system as shown in Fig 5 you can connect the four voltage waveforms to the ports IN 1 4 on the driving circuit board as shown is Fig 6 The functions of the driving circuit board include filtering protection voltage regulation and gain control Then connect the power adapter to the power port on the circuit board and push down the On Off button it s on when the green light on the circuit board turns red Check the output voltage waveforms from the ports OUT1 4 on the circuit board The voltage waveforms of OUT1 and OUT3 should be the same as the ones shown in Fig 3 and the voltage waveforms of OUT2 and OUT4 the same as in Fig 4 OCT subsystem UE o Driving board Light source Fig 5 The use of the probe in an OCT system On Off button Power IN 1 gt IN 2 gt Port in lt OUT3 HE oum SE GND N pa 5 e LA br l 1 92
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