摘要
在较小体积的照明系统中实现较好的照明效果是近年来微投影仪的主要发展方向。本文在对DLP(Digital Light Processing)微投影显示系统进行分析的基础上,提出了一种紧凑的基于LED光源的单片式DLP照明光路结构。当照明光斑尺寸满足0.3英寸的DMD(Digital Micromirror Devices)芯片时,中继系统的长度缩短至原来的50%左右。并利用ZEMAX软件分别对基于理想点光源和扩展面光源的照明系统进行了建模仿真。追迹50万条光线的仿真结果表明,本设计在两种光源模型下都可得到均匀的照明光斑,系统的光能利用率在33%左右。
Achieving good illumination performance in a compact illumination system is the main development direction of micro-projector.A compact illumination system of one chip Digital Light Processor（DLP） projector making use of LED light source is introduced based on the analysis of the DLP micro-projection display system.The length of the relay system is shortened to about 50 percent while the light spot is big enough for illuminating the 0.3 inch Digital Micromirror Devices（DMD）.Meanwhile,two models of illumination system respectively based on an ideal point source and an extended surface source are simulated by ZEMAX software.The 500,000 threads tracing simulation results show that,our design can achieve uniform light spot in a relative small system size.The utility rate of luminous energy of this illumination system is about 33 percent.
出处
《光电工程》
CAS
CSCD
北大核心
2011年第9期99-103,共5页
Opto-Electronic Engineering
基金
富通翱翔基金资助项目(FTAX201006)
关键词
DLP
微投影显示
照明均匀度
复眼透镜
中继系统
DLP
micro-projection display
illumination uniformity
fly-eye lens
relay system
作者简介
刘旖（1987），女（汉族），重庆人。硕士研究生，主要研究工作是光学设计。E—mail：alieeliu61@163．com。
