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53.2: An Optimization Design Method of LED Freeform Lens for Uniform Circular Illumination
Author(s) -
Liu Peng,
Zheng Zhenrong,
Li Haifeng,
Liu Xu
Publication year - 2013
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2013.tb06318.x
Subject(s) - lens (geology) , nonimaging optics , irradiance , optics , symmetry (geometry) , materials science , computer science , mathematics , physics , geometry
An optimization method is proposed for designing an LED freeform lens which produces a uniform circular pattern with high energy efficiency. The results of design examples show that the irradiance distribution is well controlled with excellent uniformity and energy efficiency. This optimization method can be generalized to design freeform lenses with different lighting patterns or without rotational symmetry.