Design of compact and smooth free-form optical system with uniform illuminance for LED source

被引：222
|
作者：
Luo, Yi [1 ,2 ]
Feng, Zexin [1 ]
Han, Yanjun [1 ]
Li, Hongtao [1 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Tsinghua Natl Lab Informat Sci & Technol, State Key Lab Integrated Optoelect, Beijing 100084, Peoples R China
[2] Tsinghua Univ, Grad Sch Shenzhen, Semicond Lighting Lab, Shenzhen 518055, Peoples R China
来源：
OPTICS EXPRESS | 2010年 / 18卷 / 09期
基金：
北京市自然科学基金;
关键词：
SURFACES;
D O I：
10.1364/OE.18.009055
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A feedback modification method based on variable separation mapping is proposed in the design of free-form optical system with uniform illuminance for LED source. In this method, the non-negligible size of LED source is taken into account, and a smooth optical system is established with single free-form surface regenerated by adding feedback to the lens design for a point light source. More rounds of feedback can improve the lens performance. As an example, a smooth free-form lens with rectangular illuminance distribution is designed, and the illuminance uniformity is improved from 18.75% to 81.08% after eight times feedback. (C) 2010 Optical Society of America
引用
收藏
页码：9055 / 9063
页数：9
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