Freeform lens design for light-emitting diode uniform illumination by using a method of source-target luminous intensity mapping

被引：40

作者：

Chen, Jin-Jia ^{[1
]}

Huang, Ze-Yu ^{[1
]}

Liu, Te-Shu ^{[1
]}

Tsai, Ming-Da ^{[1
]}

Huang, Kuang-Lung ^{[2
]}

机构：

[1] Natl Changhua Univ Educ, Dept Elect Engn, Changhua 50074, Taiwan

[2] Mingdao Univ, Dept Mat Sci & Energy Engn, Changhua 52345, Taiwan

来源：

APPLIED OPTICS | 2015年 / 54卷 / 28期

关键词：

Design - Optical instrument lenses - Mapping;

D O I：

10.1364/AO.54.00E146

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a freeform lens for application to LED uniform illumination. This lens, which is designed with a method of simple source-target luminous intensity mapping, can produce irradiance uniformity of greater than 0.8 and optical efficiency above 90% with an arbitrary half-beam angle greater than 45 deg. Typically, as compared with a conventional source-target energy mapping method, this design method can achieve better optical performance of lenses for general LED lighting. When a non-Lambertian-type light source is employed, for example, the chip on board LED, the use of the method can result in a compact LED lens without losing the optical performances of high irradiance uniformity and high optical efficiency as yielded by lenses for Lambertian-type LED light sources. (C) 2015 Optical Society of America

引用

页码：E146 / E152

页数：7

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