| 白光LED荧光粉层的光学设计及研究 |
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| 引用本文： | 车振,张军,余新宇,陈哲.白光LED荧光粉层的光学设计及研究[J].发光学报,2015,36(10):1220-1226. |
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| 作者姓名： | 车振 张军 余新宇 陈哲 |
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| 作者单位： | 1. 暨南大学 光电工程系, 广东 广州 510632;
2. 暨南大学 光电信息与传感技术广东普通高校重点实验室, 广东 广州 510632 |
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| 基金项目： | 国家自然科学基金(61177075,61275046,61475066,61405075); 广东省战略性新兴产业核心技术攻关项目 (2012A032300016,2012A080302004); 广东省学科建设专项资金(2013CXZDA005); 广东省自然科学基金(2014A030313377); 中央高校基本科研业务费专项资金(21614313,21615307)资助项目 |
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| 摘 要： | 荧光粉粒子浓度的优化设计是改善白光LED颜色品质和流明效率的重要手段。通过光学仿真方法可以分析荧光粉层不同粒子浓度对LED光强分布和色度均匀性的影响。仿真结果表明,随着荧光粉粒子浓度的增加,荧光粉层对蓝光的散射和吸收增强,LED的流明效率增大,光强分布逐渐变均匀,光斑的色度由蓝光逐渐向白光转变。当荧光粉的粒子浓度为105/mm3时,LED的光强分布最均匀,接近朗伯余弦分布。此时,LED光斑的色度坐标接近等能白光源,色度均匀性的空间分布较好。
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| 关 键 词： | LED 光学仿真 荧光粉 粒子浓度 流明效率 |
| 收稿时间： | 2015-06-21 |
Optical Design and Research on Phosphors for White LED |
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| CHE Zhen,ZHANG Jun,YU Xin-yu,CHEN Zhe.Optical Design and Research on Phosphors for White LED[J].Chinese Journal of Luminescence,2015,36(10):1220-1226. |
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| Authors: | CHE Zhen ZHANG Jun YU Xin-yu CHEN Zhe |
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| Institution: | 1. Department of Optoelectronic Engineering, Jinan University, Guangzhou 510632, China;
2. Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Jinan University, Guangzhou 510632, China |
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| Abstract: | The optimal design of the particle number concentration of phosphor is an important way to improve the color quality and lumen efficiency of white LED. Through the method of optical simulation, the optical properties were analyzed under the influence of different particle number concentrations. According to the simulation results, with the increasing of the particle number concentration of phosphor, the absorption and scattering of blue light are strengthened. It is helpful to get the higher luminous efficiency, the better white light spot and uniform chrominance. When the particle number concentration of phosphor is at level of 105 /mm3, the LED light spot has the most uniform light intensity distribution and chrominance, and approximates the standard white light source. |
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| Keywords: | LED optical simulation phosphors particle number concentration luminous efficiency |
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