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Proceedings Paper

The design of a reading light system with RGB white-light LED by Fresnel lens and evolutionary algorithms
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Paper Abstract

This paper presents the design of a reading light system consisted of multiple R, G, and B white light LEDs with Fresnel lens located before the light source. First, we use a general Fresnel lens and a Genetic Algorithm (phaseΙ) to search the best arrangement of multiple LEDs, then use another Genetic Algorithm (phaseΠ) to the result obtained before to get a better Fresnel lens of width-varied grooves. Experimental results show that the special arrangement of LEDs and the special structure of Fresnel lens make the reading light system more efficient in illuminance than the reading light system of no Fresnel lens.

Paper Details

Date Published: 22 October 2004
PDF: 7 pages
Proc. SPIE 5560, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X, (22 October 2004); doi: 10.1117/12.579300
Show Author Affiliations
Wen-Gong Chen, I Shou Univ. (Taiwan)
Chii-Maw Uang, I Shou Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5560:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications X
Francis T. S. Yu; Ruyan Guo; Shizhuo Yin, Editor(s)

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