Optical Design and Engineering

Design of freeform reflector array for oblique illumination in general lighting

[+] Author Affiliations
Enguo Chen

Fuzhou University, National and Local United Engineering Laboratory of Flat Panel Display Technology, 523 Industrial Road, Fuzhou, Fujian Province 350002, China

Rengmao Wu

University of Arizona, College of Optical Sciences, 3DVIS Lab, Meinel 448, 1630 East University Boulevard, Tucson, Arizona 85721, United States

Opt. Eng. 54(6), 065103 (Jun 23, 2015). doi:10.1117/1.OE.54.6.065103
History: Received March 23, 2015; Accepted May 27, 2015
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Abstract.  With increasing concerns about light pollution and energy waste in general lighting, efficient and effective lighting techniques have become imperative. We present the design of a kind of dedicated oblique illumination (OI) system to solve the problems of light pollution and the waste of energy in general lighting. The OI system consists of an extended (actual) light source, a collimator, and a freeform reflector array. Two different layouts of the OI system are proposed for different lighting situations, and design models of the two layouts are also given by use of the Monge–Ampère equation method. Two typical lighting situations, street lighting and advertising board lighting, are given here to illustrate the proposed OI system, and characteristics of the OI system are explored. The results show the light distribution is well controlled with a pretty good optical performance and the OI system has a large tolerance to the change of intensity distribution of the light source and to the size of the light source.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Enguo Chen and Rengmao Wu
"Design of freeform reflector array for oblique illumination in general lighting", Opt. Eng. 54(6), 065103 (Jun 23, 2015). ; http://dx.doi.org/10.1117/1.OE.54.6.065103


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