1 January 2011 Simple Köhler homogenizers for image-forming solar concentrators
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Abstract
Image-forming solar concentrators which project an image of the sun on the photovoltaic cell may have high thermodynamic efficiency, but suffer from non-uniform irradiance distribution and a nonsquare irradiance pattern. In this paper we discuss how to apply the Köhler illumination technique to solve these problems with an optimization approach. Two examples, a Fresnel lens-based concentrator and a two-mirror aplanatic system, are shown for demonstration. The uniformity of these systems is greatly improved by adding simple Köhler homogenizers in the form of aspheric lenses generated with our approach.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
Roland Winston, Roland Winston, Weiya Zhang, Weiya Zhang, } "Simple Köhler homogenizers for image-forming solar concentrators," Journal of Photonics for Energy 1(1), 015503 (1 January 2011). https://doi.org/10.1117/1.3565187 . Submission:
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