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Optical Engineering

Freeform optics construction with nonuniformly sampled grids in modified double‐pole coordinate system
Author(s): Donglin Ma; Shaun Pacheco; Chengliang Wang; Rongguang Liang
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Paper Abstract

The intensity distributions of some light sources have the rotationally symmetric property. We propose a method to design freeform optics by sampling the source intensity distribution nonuniformly in a modified double‐pole coordinate system to satisfy the circular emission pattern of the light source. We can greatly improve the smoothness of the designed freeform surfaces and maximize the collection efficiency. We demonstrate the design method with two freeform illumination lenses: one for the light from the multimode filter and the other for the light emitting diode with a hemisphere emitting solid angle. We also demonstrate that the nonuniform sampling algorithm has significant advantages for designing freeform reflectors with superlarge collection angle.

Paper Details

Date Published: 7 December 2015
PDF: 8 pages
Opt. Eng. 54(12) 125102 doi: 10.1117/1.OE.54.12.125102
Published in: Optical Engineering Volume 54, Issue 12
Show Author Affiliations
Donglin Ma, College of Optical Sciences, The Univ. of Arizona (United States)
Shaun Pacheco, College of Optical Sciences, The Univ. of Arizona (United States)
Chengliang Wang, The Univ. of Arizona (United States)
Wuhan Univ. of Technology (China)
Rongguang Liang, College of Optical Sciences, The Univ. of Arizona (United States)


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