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.
出处
《光学技术》
CAS
CSCD
北大核心
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)
关键词
矩形CPC
LED
光学扩展量
光能利用率
照度均匀性
rectangular compound parabolic concentrator
light-emitting diode
etendue
energy efficiency
illuminance uniformity
