The design of single element planar hemispherical gradient-index solar lenses that can accommodate the constraints of realistic materials and fabrication techniques are presented, and simulated with an extended and polychromatic solar source for concentrator photovoltaics at flux concentration values exceeding 1000 suns. The planar hemispherical far-field lens is created from a near-field unit magnification spherical gradient-index design, and illustrated with an f/1.40 square solar lens that allows lossless packing within a concentrator module.
© 2012 Optical Society of America
Original Manuscript: December 19, 2011
Revised Manuscript: January 31, 2012
Manuscript Accepted: January 31, 2012
Published: March 27, 2012
Panagiotis Kotsidas, Vijay Modi, and Jeffrey M. Gordon, "Realizable planar gradient-index solar lenses," Opt. Lett. 37, 1235-1237 (2012)