Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source.
Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source.
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DOI：
10.1364/oe.19.0a1022
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发表时间：
2011-09
期刊：
影响因子：
3.8
通讯作者：
Wenchang Situ;Yanjun Han;Hongtao Li;Yi Luo
中科院分区：
文献类型：
--
作者：
Wenchang Situ;Yanjun Han;Hongtao Li;Yi Luo
提出了一种基于变量分离映射的组合反馈设计方法，用于设计具有复杂照明模式的扩展LED光源的自由曲面光学系统。该方法根据模拟照明结果与目标要求的偏差，进行宏观能量划分和微观照度分布反馈修正。然后，自由形式的光学系统被再生，并且偏差可以通过多次迭代被最小化。结果表明，采用该方法设计的自由曲面光学系统能同时实现精确的能量分布、高的区域照度均匀性（89.7%）和高的光输出效率（94.9%）。
A combined feedback design method based on variable separation mapping is proposed in this paper to design free-form optical systems for an extended LED source with complicated illumination patterns. In this method, macro energy division and micro illuminance distribution feedback modifications are carried out according to the deviation between the simulated illumination results and the target requirements. The free-form optical system is then regenerated, and the deviation could be minimized through multiple iterations. Results indicate that free-form optical system designed by this method could achieve precise energy distribution, high regional illuminance uniformity (89.7%), and high light output efficiency (94.9%) simultaneously.