用于LED光源准直的紧凑型光学系统设计  

Optical System Design of the Compact Collimator for LED Source

作　　者：苏宙平[1] 阙立志[1] 朱焯炜[1] 孙晓鹏[1] 李磊[1] 

机构地区：[1]江南大学理学院,江苏无锡214122

出　　处：《激光与光电子学进展》2012年第2期131-137,共7页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(60908041);中央高校基本科研业务费专项资金(JUSRP31005)资助课题

摘　　要：设计了一种光学系统,用于发光二极管(LED)光源准直,并通过TracePro软件仿真进行了验证。该系统采取了折射和反射式自由曲面的组合,使LED光源的发散角从70°减少到约4°,效率在约85%,系统的高度为7.65mm,口径为8.73mm。分析了折射和反射的最佳分界角区域是41°～45°,最佳分角比例因子是0.4～0.5。A compact collimator for light-emitting diode（LED） source is designed.The collimator is a catadioptric rotational system.The refraction part is used to collimate the rays with small view angle,and the reflection part is used to collimate the rays with large view angle.The design results are verified by optical simulation software TracePro.The results show that the divergence angle can be reduced to about 4° from 70° by the collimator with the optical efficiency of 85%.The height and diameter of the system are 7.65 mm and 8.73 mm,respectively.The optimal separation angle range is 41°~45°,and the optimal proportion factor range of refraction angle is 0.4~0.5.

关 键 词：光学设计 发光二极管 自由曲面 准直系统 分界角 

分 类 号：O435[机械工程—光学工程]