Freeform LED lens for uniform illumination

被引：339

作者：

Ding, Yi ^{[1
]}

Liu, Xu ^{[1
]}

Zheng, Zhen-rong ^{[1
]}

Gu, Pei-fu ^{[1
]}

机构：

[1] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Peoples R China

来源：

OPTICS EXPRESS | 2008年 / 16卷 / 17期

关键词：

D O I：

10.1364/OE.16.012958

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Light flux from LED must be redistributed to meet the needs of lighting in most cases, a new method is proposed for its secondary optic design. Based on refractive equation and energy conservation, a set of first-order partial differential equations which represent the characters of LED source and desired illumination were presented. The freeform lens was constructed by solving these equations numerically. The numerical results showed that we can get a freeform lens for the illumination of uniformity near to 90%, with considerable high computation speed. This method can shorten the designing time of the freeform lens with high accepted tolerance. (C) 2007 Optical Society of America.

引用

页码：12958 / 12966

页数：9

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