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OCT/SLO SERVICE MANUAL Version V.4

5

Characteristics

Description

The OCT/SLO system is an imaging system intended to be used for ophthalmic
applications. It combines a digital fundus imaging system that includes a Confocal
Scanning Ophthalmoscope 

CSO 

and Optical Coherence Tomography 

OCT

. Both the

Confocal fundus SLO image and the OCT image are produced simultaneously  from
the same SLD light source through the same optics and therefore they are pixel to
pixel correspondent.

The OCT/SLO software runs on Windows XP, and uses the features of the Windows
interface to direct the operation of the system and maintain patient records, permitting
a user-friendly environment for clinical applications.

System components

The OCT/SLO system consists of:
The Scanner unit or Optical Head, which contains the optical emitter/receiver. An
attached computer for system control, image capture, patient data storage, Image
recall and display and image analysis.

Application

To acquire SLO and OCT images, the operator first selects the “

SLO/OCT

” tab

which displays the acquisition screen, and follows the instructions for its various
controls (displayed on the upper left corner of the screen). The patient placed their
head on the chinrest and is instructed to fixate on the internal or external fixation
target.  The  scan  parameters  are  preset,  the  examiner  selects  the  scan  mode  of
his/her choice, select “LIVE” and the system starts scanning the eye.

Содержание OCT

Страница 1: ...ging System Service Manual Model B Version V 4 September 2005 Ophthalmic Technologies Inc 37 Kodiak Crescent Unit 16 Phone 1 416 631 9123 Toronto Ontario M3J 3E5 CANADA Fax 416 631 6932 www oti canada...

Страница 2: ...itialization Process 16 Parts Replacement 17 21 Procedures and Warning 22 Service Protocol Scenners Replacement 23 Service Protocol MFN Stages Replacement 24 Service Protocol Mini LCD Replacement 25 S...

Страница 3: ...with the reflected light from a reference mirror A photo detector unit detects and measure the interference and sends the signal to a computer that generates the OCT image Part of the light backscatt...

Страница 4: ...thin the transverse area of the raster image due to the en face scanning used in the OCT SLO The user may select i the scanning depth range from 0 5 to 6 0 mm in user pre selected steps ii the scannin...

Страница 5: ...ain patient records permitting a user friendly environment for clinical applications System components The OCT SLO system consists of The Scanner unit or Optical Head which contains the optical emitte...

Страница 6: ...or mouse controlled combination of B Scan and C Scan Optional in Advance User mode Detailed Stack C Scan and Radial Scan and RNFL program Scan Pixels Adjustable 1024x1024 512x512 256x256 and128x128 S...

Страница 7: ...z Pentium 4 1GB DDR RAM Monitor 19 Color LCD Monitor Control Input Devices Keyboard Mouse Joystick Storage 160GB Hard Disk ENVIRONMENTAL CONDITIONS Transport and Storage Temperature 10 to 60 deg C Rel...

Страница 8: ...require cleaning are the forehead and the chin rest these are the parts that come with patient s contact regularly These parts should be cleaned between each examination with an alcohol prep swab The...

Страница 9: ...tem power fuses by non authorized personal will void the system warranty and may cause major damage to some of the system key components Moving the OCT SLO system If the unit has to be moved to a new...

Страница 10: ...Tray and the Computer shelf can be installed on either side of the motorized table Chinrest height adjustment Chinrest Joystick For Optical Head height position control Flexmount external fixation li...

Страница 11: ...ir conditioning or at least a stable ambient temperature The system will be delivered in several parts the optical head and chinrest pre assembled the PC the up down table and the power supplies As we...

Страница 12: ...pin Cables connected to boards Marked P 6110 and P6023 Serial Cable Parallel Cable Internal Monitor Cable Other Connections to the PC are External LCD Monitor VGA Cable Mouse Keyboard External Power C...

Страница 13: ...Power connecting to Chin Rest power supply allows chin rest Up Down motion through the Joystick External Fixation wire connects to the Chin Rest Power Supply Optical Head Power Supply Note Please make...

Страница 14: ...OCT SLO SERVICE MANUAL Version V 4 14 Connections bottom of the Optical Head Chin Rest P 20 connector Optical Head Power Supply connector...

Страница 15: ...OCT SLO SERVICE MANUAL Version V 4 15 Image Capture and I O Boards PC NI Image Capture Board NI I O Board Connecting Cable I O Board to Capture Board...

Страница 16: ...e User Manual Service mode 1 Go to the utilities tab 2 Click on Service and enter the password room13 3 Go to Diagnostics and you should see the ongoing communication between the PC and the system dur...

Страница 17: ...her than OTI personnel The Replaceable parts in the system are X Y Galvoscanner Model 6210 X Y Scanners Controller Board Axis 3 4 MFN type Fiber Alignment stages Observation CCD Camera assembly Fixati...

Страница 18: ...OCT SLO SERVICE MANUAL Version V 4 18 Observation CCD Camera assembly X Y Scanners Controller Board X Y Scanners...

Страница 19: ...OCT SLO SERVICE MANUAL Version V 4 19 Fixation Mini LCD Assembly Optical Head Interface Board Safety Board SLO Detector...

Страница 20: ...OCT SLO SERVICE MANUAL Version V 4 20 MCB Stages Controller Board X Y Scanners Controller Board SLD Pilot 4 Controller OCT Detector Electronics SLO Detector Main Ref Stage...

Страница 21: ...e blue fiber may cause degradation of final image quality or complete machine failure Pinching of the electrical cables may cause hindrance of movement of the optical head or in ability to close the c...

Страница 22: ...at the driver board and scanner head 3 Ensure system is powered up and the software is running correctly 4 Go to service menu 5 Click on c scan settings tab switch between this tab and the SLOOCT capt...

Страница 23: ...t the axis 4 MFN is removable 11 Slide out the axis 4 MFN 12 Feed through the cable for the new MFN and position being careful not to apply too much pressure on the 3x URM3 5 mounting assembly for fib...

Страница 24: ...at the scan pattern is clearly displayed on the monitor in a sharp fashion To do this you may need to adjust the power of the SLD drive current as set on the pilot 2 or 4 to zero If this is the case d...

Страница 25: ...Attach Camera alignment JIG to lens barrel 2 Move external chinrest illuminator to backlight the opaque target on the JIG assembly 3 Check camera image is beingdisplayed correctly on the PC monitor c...

Страница 26: ...off power to PILOT 3 Remove D type connector and unplug safety cables these go to scanner feedback positions 4 Unscrew power cable from terminal 14 and 16 5 Replace new PILOT attach power cables but...

Страница 27: ...cked Replacement of scanners Replacement of PILOT controller Preferably two people are required one to use the IR viewer hold the power meter head and one to call out measurements For this measurement...

Страница 28: ...appen when the voltage is switched from 120V to 100V on the isolation transformer An earlier optical cause reported should now be solved Another possible solution is to replace the X scanner cable bet...

Страница 29: ...parts which are not listed in this service manual or the entire optical head is against OTI recommendation and it will void any warranty provided by the manufacturer OTI OTI will be only responsible...

Страница 30: ...OCT SLO SERVICE MANUAL Version V 4 30 JIGS for Setup and Alignment Jig for LCD Alignment Jig for Image Calibration Jig for Camera Alignment...

Страница 31: ...OCT SLO SERVICE MANUAL Version V 4 31 OCT SLO Wiring Diagrams S1051A0 Electrical Schematic...

Страница 32: ...OCT SLO SERVICE MANUAL Version V 4 32 S1051A0 Interface Board Drawing...

Страница 33: ...OCT SLO SERVICE MANUAL Version V 4 33 S1051A0 Optical Head Power Supply Drawing...

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