超高亮度LED微型投影仪照明系统设计  

Illumination system design for pocket projector with ultra high brightness LED

作　　者：魏葰[1] 贾宏志[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《光学仪器》2011年第3期62-66,共5页Optical Instruments

摘　　要：为了提高微型投影仪系统的性能，设计了一种超高亮度LED光源口袋式微型投影仪照明系统。其光源采用具有大面积发光面的RGB三色LED芯片。照明系统中最为关键的集光系统包含一个CPC和两个聚光透镜。在LightTools软件中追迹2×10^6条光线进行仿真，DMD面上光照均匀性为92％，光通量为4501m。该照明系统比传统LED光源照明系统体积更小，亮度更高，特别适用于微型投影仪。In order to improve the performance of the pocket projector, a novel illumination system based on ultra-high brightness LED was developed. RGB LEDs with big emission area were used as the light source. The collection optics which is the key part of the illumination system ineludes a CPC and two condenser lenses. Tracing 2×10^6 rays in LightTools, The system uniformity is 92%, and the luminous flux on the DMD is about 4501rn. This illumination system is more compact and brighter than conventional LED-based illumination system, it is very suitable used in pocket projector.

关 键 词：照明系统设计 LED光源 微型投影仪 

分 类 号：TH741.5[机械工程—光学工程]