Freeform optics construction with nonuniformly sampled grids in modified double‐pole coordinate system

Donglin Ma; Shaun Pacheco; Chengliang Wang; Rongguang Liang

doi:10.1117/1.OE.54.12.125102

7 December 2015 Freeform optics construction with nonuniformly sampled grids in modified double‐pole coordinate system

Donglin Ma, Shaun Pacheco, Chengliang Wang, Rongguang Liang

Author Affiliations +

Optical Engineering, Vol. 54, Issue 12, 125102 (December 2015). https://doi.org/10.1117/1.OE.54.12.125102

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.

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Donglin Ma, Shaun Pacheco, Chengliang Wang, and Rongguang Liang "Freeform optics construction with nonuniformly sampled grids in modified double‐pole coordinate system," Optical Engineering 54(12), 125102 (7 December 2015). https://doi.org/10.1117/1.OE.54.12.125102

Published: 7 December 2015

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