Design a programmable Fresnel lens and arrange LED sources to optimize the illuminance and uniformity of a medium or large LED-based lighting system with varied shapes

Wen-Gong Chen

doi:10.1117/12.825962

18 August 2009 Design a programmable Fresnel lens and arrange LED sources to optimize the illuminance and uniformity of a medium or large LED-based lighting system with varied shapes

Wen-Gong Chen

Author Affiliations +

Proceedings Volume 7422, Ninth International Conference on Solid State Lighting; 742211 (2009) https://doi.org/10.1117/12.825962
Event: SPIE Optical Engineering + Applications, 2009, San Diego, California, United States

Abstract

To design the layout of LED light sources(called as LEDs) in a medium or large LED-based lighting system to optimize the system's performance in illuminance, uniformity and heat dissipation by developing a Genetic Algorithm, the searching space formed by x,y, z coordinates and rotation angles of an LED light source will be rather huge as to paralyze the evolution program. Hence, we propose the idea of representative LED sources (called as representatives), which are parts of LEDs. In this paper, we will develop some a Genetic Algorithm to search for suitable representatives to make the evolutional design of a programmable Fresnel lens for the mentioned lighting system feasible. Based on the designed programmable Fresnel lens, develop another Genetic Algorithm to arrange the layout of LEDs, including locations and orientations of LEDs, to let the lighting system's performance be further enhanced.

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Wen-Gong Chen "Design a programmable Fresnel lens and arrange LED sources to optimize the illuminance and uniformity of a medium or large LED-based lighting system with varied shapes", Proc. SPIE 7422, Ninth International Conference on Solid State Lighting, 742211 (18 August 2009); https://doi.org/10.1117/12.825962

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