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

被引：38
|
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：
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
收藏
页码：E146 / E152
页数：7
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