| 基于自由曲面透镜的三基色LED照明系统研究 |
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| 引用本文： | 胡海城,黄丹,刘子学,冯奇斌,吕国强. 基于自由曲面透镜的三基色LED照明系统研究[J]. 应用光学, 2019, 40(1): 113-119. DOI: 10.5768/JAO201940.0105002 |
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| 作者姓名： | 胡海城 黄丹 刘子学 冯奇斌 吕国强 |
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| 作者单位： | 1.安徽华夏显示技术股份有限公司, 安徽 芜湖 230009 |
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| 基金项目： | 安徽省科技重大专项17030901003安徽省科技重大专项17030901053安徽省科技重大专项16030901001 |
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| 摘 要： | 基于三基色发光二极管(light emitting diode,LED)与方棒的投影照明系统具有色域宽、体积小的优点,但三基色LED和方棒配合使用时,存在投影亮度不高的问题。首先基于光学扩展量匹配原则选择了LED光源,然后设计了一组自由曲面的准直透镜和收集透镜。仿真结果表明:准直透镜出射光线集中在±7.5°内,方棒出射端±30°内的能量利用率为51.7%。实际加工并测试了设计的自由曲面准直透镜和收集透镜。测试结果表明:采用本文设计的没有镀减反增透膜的透镜组,投影机出射亮度比原使用镀了增透减反膜的透镜的系统高1.6%。预计设计的透镜镀减反增透膜后投影机出射亮度有望提升9.8%。
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| 关 键 词： | LED 自由曲面透镜 照明系统 出射亮度 |
| 收稿时间： | 2018-06-15 |
3-Primary-color LED illumination system based on freeform-surface lenses |
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| HU Haicheng,HUANG Dan,LIU Zixue,FENG Qibin,Lv Guoqiang. 3-Primary-color LED illumination system based on freeform-surface lenses[J]. Journal of Applied Optics, 2019, 40(1): 113-119. DOI: 10.5768/JAO201940.0105002 |
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| Authors: | HU Haicheng HUANG Dan LIU Zixue FENG Qibin Lv Guoqiang |
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| Affiliation: | (Anhui Huaxia Display Technology Co.,Ltd.,Wuhu 241000,China;School of Instrumentation and Opto-Electronics Engineering,Hefei University of Technology,Hefei 230009,China;School of Electronic Science&Applied Physics,Hefei University of Technology,Hefei 230009,China;Province and Department Joint Construction National Key Laboratory of Advanced Display Technology,National Engineering Laboratory of Special Display Technology,Academy of Photoelectric Technology,Hefei University ofTechnology,Hefei 230009,China) |
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| Abstract: | The illumination system with 3-primary-color light emitting diodes (LEDs) and light rod has the advantages of wide color gamut and small volume. However, there is a problem of low brightness when combining the 3-primary-color LEDs with the light rod. Firstly, the LED light source was selected based on the etendue theory, and then a set of free-form collimating lenses and collecting lenses were designed. The simulation results show that the light emitted by the collimator lens is concentrated within ±7.5°, and the energy utilization rate within the ±30°at the exit of the light rod is about 51.7%. Moreover, the designed lenses were manufactured and tested. The practical results show that the projection illuminance of the designed lenses set without the anti-reflection film can be improved by 1.6% than the original system with the anti-reflection film. It is expected that a 9.8% improvement of the projection illuminance can be achieved after the designed lenses are coated with the anti-reflection film. |
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| Keywords: | LED freeform surface lens illumination system exit luminance |
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