Date of download: 11/1/2017 Copyright © ASME. All rights reserved. From: Optical Parameters in High-Efficiency Optical Receivers With a Parabolic Reflector Before and After Coating With Ag Film J. Sol. Energy Eng. 2013;136(2):021003-021003-15. doi:10.1115/1.4024924 Figure Legend: Ray tracings for light-collection module and distribution of irradiances on the chip surface for the reflector with (a) ideal parabolic profile, (b) the △/4 profile error before coating Ag, and (c) the △/4 profile error after coating Ag. The aspheric lens is now prepared with a blunt edge in the simulations.