DMD微投影显示的LED光学引擎设计  

Design of LED optical engine for micro-projection display of DMD

作　　者：孙文军[1] 张梅恒[2] 尹燕宗[1] 孟中[3] 

机构地区：[1]哈尔滨师范大学物理与电子工程学院,哈尔滨150025 [2]牡丹江师范学院物理系,黑龙江牡丹江157012 [3]中国科学院长春光机所航测部,长春130022

出　　处：《光学技术》2009年第5期646-648,共3页Optical Technique

基　　金：黑龙江省青年基金(QC06C043);哈尔滨市青年创新基金(RFQXG055);哈尔滨师范大学自然基金预研助项目(08XYS-01)

摘　　要：提出了基于矩形CPC的微投影显示匀光方法,设计了由LED、CPC、矩形复眼透镜及微显示芯片DMD构成的光学引擎。利用基于蒙特卡罗法的光线追迹软件分析了圆形CPC和矩形CPC对微投影显示匀光效果、光能利用率的影响。实验结果表明基于矩形CPC的光学引擎相对于基于圆形CPC的光学引擎有如下优点:体积小,光学扩展量小,照度均匀性高达到92%以上,能量利用率高达到43%以上,满足微显示芯片DMD的要求。A light uniformazing algorithm based on rectangular CPC is presented for micro-projection display.The designed optical engine with rectangular CPC consists of LED,fly＇s-eye lens and micro-display panel DMD.The light uniformity on the micro-display panel and energy efficiency of the optical engine with rectangular CPC is analyzed by means of software.Experimental results show that the proposed light uniformazing algorithm and system compared with other uniformazing light algorithm and system have advantages such as lesser capacity,lesser etendue,higher light uniformity more than 92% and higher energy efficiency of 43% to meet the needs of micro-projection display.

关 键 词：矩形CPC LED 光学扩展量 光能利用率 照度均匀性 

分 类 号：TH741.5[机械工程—光学工程]