Design of compact and smooth free-form optical system with uniform illuminance for LED source
Design of compact and smooth free-form optical system with uniform illuminance for LED source
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DOI：
10.1364/oe.18.009055
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发表时间：
2010-04-26
期刊：
影响因子：
3.8
通讯作者：
Li, Hongtao
中科院分区：
文献类型：
--
作者：
Luo, Yi;Feng, Zexin;Li, Hongtao
在LED光源均匀照度自由曲面光学系统的设计中，提出了一种基于变量分离映射的反馈修正方法。该方法考虑了LED光源不可忽略的尺寸，通过在点光源透镜设计中加入反馈，实现了单自由曲面的光滑光学系统。多轮反馈可以提高透镜性能。作为实例，设计了一种具有矩形照度分布的光滑自由曲面透镜，经过8次反馈后，照度均匀度从18.75%提高到81.08%。(C)2010年美国光学学会
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