投影电视的均匀照明系统设计  

Design of Illumination Systems for Projection Displays

作　　者：盛益强[1] 方志良[1] 母国光[1] 张增宝[2] 翁志成[2] 

机构地区：[1]南开大学现代光学研究所,天津300071 [2]长春光学精密机械与物理研究所应用光学国家重点实验室,吉林长春130022

出　　处：《光电子．激光》2004年第4期416-419,共4页Journal of Optoelectronics·Laser

基　　金：天津市光电子联合研究中心基金资助项目

摘　　要：分析和设计了用于提高大屏幕投影电视光学性能的均匀照明系统:透镜阵列和积分方棒。基于弧长为1.2mm的超高压水银灯(UHP),建立嵌套圆筒的体光源模型,给出了两个照明系统的设计方法和用于2.3cm空间光调制器照明系统的设计参数。仿真结果表明,透镜阵列系统实现了均匀性(+4.55%,-5.54%),光能利用率为81%的照明输出;积分方棒系统实现了均匀性(+4.37%,-4.58%),光能利用率为79%的远心照明输出。均能满足投影电视对照明系统的指标要求。Lens array and light pipe illumination systems were analysed and designed for improving the optical performance of projection display. Based on the ultrahigh pressure mercury lamp of 1.2 mm, a nested cylindrical volume source was modelled and the illumination systems with 2.3 cm space light modulator were imitated. The lens array system has optical efficiency of 81% and the uniformity of +4.55%, -5.54%, while the telecentric light pipe system has the optical efficiency of 79% and the uniformity of +4.37%, -4.58%. Both of them are satisfied with the illuminative requirement of projection display.

关 键 词：投影电视 照明系统 透镜阵列 积分方棒 光学设计 

分 类 号：TN949.191[电子电信—信号与信息处理]