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Proceedings Paper

Three-chip LED illumination system for laparoscopy and minimal access surgery applications
Author(s): Bin Ye; Liqiang Wang; Huilong Duan
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Paper Abstract

Light-emitting diodes (LEDs) bring great flexibility in color choice and high luminous efficacy design for biomedical illumination. Based on the state-of-the-art LED chips, a three-chip LED illumination system was developed specially for laparoscopy and minimal access surgery. White light is produced by mixing three specific wavelengths of amber red, true green and blue, and then coupled into a fiber-optic light guide with 2mm diameter. The whole device has a compact size of 145mm × 92mm × 84 mm which is more suitable than a conventional xenon lamp source for portable endoscopes. The illuminance and color characteristic of the three-chip model were analyzed, compared to those of traditional light source. A maximum illuminance of 1960 lux was obtained at the distance of 100 mm, with the average current of 450 mA of the LEDs. Additionally, a simulation environment had been set up to find out the performance of the endo-illuminator in the specific circumstance, which was closer distance and crawl space. Experiments showed that images taken under the three-chip LED illumination had better contrast and saturation. With the temperature of 31.5 degrees Celsius at the end of the fiber bundle, the endo-illuminator is also a cold light source.

Paper Details

Date Published: 15 November 2010
PDF: 6 pages
Proc. SPIE 7852, LED and Display Technologies, 78520H (15 November 2010); doi: 10.1117/12.869479
Show Author Affiliations
Bin Ye, Zhejiang Univ. (China)
Liqiang Wang, Zhejiang Univ. (China)
Huilong Duan, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 7852:
LED and Display Technologies
Gang Yu; Yanbing Hou, Editor(s)

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