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| 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 |
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| DOI: |
| 中文关键词: 照明系统设计 LED光源 微型投影仪 |
| 英文关键词:illumination system design LED light source pocket projector |
| 基金项目: |
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| 中文摘要: |
| 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2×106条光线进行仿真,DMD面上光照均匀性为92%,光通量为450lm。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。 |
| 英文摘要: |
| 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 includes a CPC and two condenser lenses. Tracing 2×106 rays in LightTools, The system uniformity is 92%, and the luminous flux on the DMD is about 450lm. This illumination system is more compact and brighter than conventional LED based illumination system, it is very suitable used in pocket projector. |
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