Browsing by Author "Su, Ying-Chieh"

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A Novel Design of LED Embeded Alexis Wound Retractor
(2012-01-01)
Su, Ying-Chieh
;
Chen, Yao-Shan
;
Pan, Jui-Wen
;
Wu, Chung-Yu
;
光電系統研究所
The key design of this invention is the LED mounted on the inner ring of Alexis Wound Retractor. With this design, we could offer a much wide spreaded lightening comparing to the traditional shadowless lighting.
Secondary optical element design for intracorporeal LED illumination system
(2014-01-15)
Pan, Jui-Wen
;
Su, Ying-Chieh
;
Chen, Yao-Shan
;
光電系統研究所
;
影像與生醫光電研究所
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. (C) 2014 Optical Society of America