The optical design of a LED illuminator and camera imaging system were studied for potential use in a small medical "robotic type" probe to be used for minimally invasive abdominal surgery. Beam shaping optical reflectors were studied to increase the intensity distribution of the LED beam directed toward a close-by target surface. A CMOS/CCD camera and lens was used to image the targeted area. In addition, extensive optical ray tracing simulations were made to predict the intensity patterns. The experimental measurements and ray tracing simulations were in good agreement, and indicated that 20 degree cone reflectors for the LED sources and appropriate micro-lens/CCD chip imaging optics should provide a useful image at a working distance of about 5 cm.
|Commitee:||Johnson, Dale, Killinger, Dennis, Kim, Myung|
|School:||University of South Florida|
|School Location:||United States -- Florida|
|Source:||MAI 49/03M, Masters Abstracts International|
|Keywords:||Beam shaping, Intensity distribution, Lens, Optical reflectors, Ray tracing simulation|
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