Planar concentrators near the étendue limit.
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 1 mm2 cell. When deployed in reverse, our designs provide collimation even for high-numerical-aperture light sources.
Winston
Roland
R
School of Natural Sciences and School of Engineering, University of California, Merced, Merced, California 95344, USA. rwinston@ucmerced.edu
Gordon
Jeffrey M
JM