Evolutionary algorithm for optimization of nonimaging Fresnel lens geometry.
In this study, an evolutionary algorithm (EA), which consists of genetic and immune algorithms, is introduced to design the optical geometry of a nonimaging Fresnel lens; this lens generates the uniform flux concentration required for a photovoltaic cell. Herein, a design procedure that incorporates a ray-tracing technique in the EA is described, and the validity of the design is demonstrated. The results show that the EA automatically generated a unique geometry of the Fresnel lens; the use of this geometry resulted in better uniform flux concentration with high optical efficiency.
Yamada
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Department of Mechanical Engineering, Nagaoka University of Technology, Nagaoka 940-2188, Japan. noboru@nagaokaut.ac.jp
Nishikawa
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