Secondary optical element design for intracorporeal LED illumination system

In this Letter, we propose an intracorporeal illumination system for providing uniform and wide-field illumination during minimally invasive surgery. The illumination system is comprised of an Alexis wound retractor, a set of LEDs, and secondary optical elements (SOEs). The SOE was composed of a Fre...

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Bibliographic Details
Published in:Optics letters 2014-01, Vol.39 (2), p.224-227
Main Authors: Pan, Jui-Wen, Su, Ying-Chieh, Chen, Yao-Shan
Format: Article
Language:English
Subjects:
Damage
Design engineering
Human tissues
Illumination
Lenses
Light
Minimally Invasive Surgical Procedures - instrumentation
Optical Devices
Performance enhancement
Reflection
Semiconductors
Simulation
Surgery
Thorax
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Summary:In this Letter, we propose an intracorporeal illumination system for providing uniform and wide-field illumination during minimally invasive surgery. The illumination system is comprised of an Alexis wound retractor, a set of LEDs, and secondary optical elements (SOEs). The SOE was composed of a Fresnel lens and a total internal reflection lens, which was designed to improve the optical performance of the LED. The results of simulation demonstrate that the optical efficiency of each LED with an SOE could be increased from 33.6% to 82.9%. To avoid damage to human tissue by thermal effect, the number of LEDs with SOEs was optimized. The results indicate that our design to be applicable for practical surgery.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.39.000224