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Planar concentrators near the étendue limit

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Abstract

Recently proposed aplanatic imaging designs are integrally combined with nonimaging flux boosters to produce an ultracompact planar glass-filled concentrator that performs near the étendue limit. Such optical devices are attractive for high-efficiency multijunction photovoltaics at high flux, with realistic power generation of 1 W from a 1mm2 cell. When deployed in reverse, our designs provide collimation even for high-numerical-aperture light sources.

© 2005 Optical Society of America

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