Optical Design and Engineering

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

[+] Author Affiliations
Donglin Ma

University of Arizona, College of Optical Sciences, 1630 East University Boulevard, Tucson, Arizona 85721, United States

University of Arizona, Department of Physics, 1118 East Fourth Street, Tucson, Arizona 85721, United States

Shaun Pacheco, Rongguang Liang

University of Arizona, College of Optical Sciences, 1630 East University Boulevard, Tucson, Arizona 85721, United States

Chengliang Wang

University of Arizona, College of Optical Sciences, 1630 East University Boulevard, Tucson, Arizona 85721, United States

Wuhan University of Technology, School of Information Engineering, 1040 Heping Avenue, Wuchang, Wuhan, Hubei 430070, China

Opt. Eng. 54(12), 125102 (Dec 07, 2015). doi:10.1117/1.OE.54.12.125102
History: Received September 17, 2015; Accepted October 27, 2015
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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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© 2015 Society of Photo‐Optical Instrumentation Engineers

Citation

Donglin Ma ; Shaun Pacheco ; Chengliang Wang and Rongguang Liang
"Freeform optics construction with nonuniformly sampled grids in modified double‐pole coordinate system", Opt. Eng. 54(12), 125102 (Dec 07, 2015). ; http://dx.doi.org/10.1117/1.OE.54.12.125102


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