Share Email Print
cover

Proceedings Paper

The optimal design of Fresnel lens for a reading light system with LEDs
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The main function of a Fresnel lens is to provide light guidance. In this paper, we present an optimal design of Fresnel lens for a reading light system with multiple light sources of white light LEDs. The groove angles of Fresnel lens are chosen as design parameters and the design goal is to maximize the illuminace in a specified read surface while maintaining the distribution uniformity of the light rays. We develop a series of genetic algorithms which are implemented with SCHEME language and macros supported by TRACEPRO package to search for a set of optimal groove angles for Fresnel lens. Simulation results show that the optimally designed Fresnel lens indeed offers better light-guiding performance than typical Fresnel lens for a multiple-LED reading light system.

Paper Details

Date Published: 8 September 2005
PDF: 12 pages
Proc. SPIE 5911, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XI, 591103 (8 September 2005); doi: 10.1117/12.616285
Show Author Affiliations
Wen-Gong Chen, I-Shou Univ. (Taiwan)
Yung-Ta Institute of Technology (Taiwan)
Chii-Maw Uang, I-Shou Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5911:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications XI
Francis T. S. Yu; Ruyan Guo; Shizhuo Yin, Editor(s)

© SPIE. Terms of Use
Back to Top