光子学报, 2015, 44 (2): 0222001, 网络出版: 2015-02-15   

基于大功率LED扩展光源的均匀光斑光辐射模拟器设计

Design of Squared Uniform Illumination Based on High Power LED Extended Objects
作者单位
1 防化研究院, 北京 102205
2 杭州电子科技大学 通信工程学院, 杭州 310018
摘要
基于边缘光线原理和光学扩展量守恒思想, 结合复合抛物面聚光器和轴对称自由曲面透镜, 设计并研制了大功率发光二极管扩展光源的反射/折射准直器.运用Tracepro软件对系统进行光束追迹模拟仿真和实验, 研制出均匀光斑的光辐射模拟器.模拟器输出发散角为±12°光束, 测量距离出射面50 cm处光屏的光斑, 在尺寸为14 cm× 14 cm的光照范围内, 测得光斑水平方向中心线上的光度均匀度优于4.1%, 竖直方向中心线上的光度均匀度优于3.8%.
Abstract
Based on principle of edge ray and etendue conservation ideas, the compound parabolic concentrator and freeform lens collimator were designed for high power Light Emitting Diode extended source. By using TracePro software for ray tracing simulation and experimental guidance, a light radiation simulator with uniform illumination output was developed. The divergence angle of simulator output light beam is measured as ±0.2 rad. In the lightscreen of 50 cm distance the beam horizontal uniformity is measured better than 4.1%, and longitudinal uniformity better than 3.8%, within 14 cm×14 cm size illuminated area.
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李鹏, 郑毅, 范江兵, 赵加凯, 许伟忠, 朱宝龙, 郑尧元, 胡淼. 基于大功率LED扩展光源的均匀光斑光辐射模拟器设计[J]. 光子学报, 2015, 44(2): 0222001. LI Peng, ZHENG Yi, FAN Jiang-bing, ZHAO Jia-kai, XU Wei-zhong, ZHU Bao-long, ZHENG Yao-yuan, HU Miao. Design of Squared Uniform Illumination Based on High Power LED Extended Objects[J]. ACTA PHOTONICA SINICA, 2015, 44(2): 0222001.

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