Optical Design and Research on Phosphors for White LED

CHE Zhen; ZHANG Jun; YU Xin-yu; CHEN Zhe

doi:10.3788/fgxb20153610.1220

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Optical Design and Research on Phosphors for White LED

更新时间：2020-08-12

- Optical Design and Research on Phosphors for White LED
- Chinese Journal of Luminescence Vol. 36, Issue 10, Pages: 1220-1226(2015)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153610.1220
  CLC： O482.31
- Received：21 June 2015，
  
  Revised：25 July 2015，
  
  Published：10 October 2015
- 稿件说明：
移动端阅览
车振, 张军, 余新宇等. 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

CHE Zhen, ZHANG Jun, YU Xin-yu etc. Optical Design and Research on Phosphors for White LED[J]. Chinese Journal of Luminescence, 2015,36(10): 1220-1226
车振, 张军, 余新宇等. 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 DOI： 10.3788/fgxb20153610.1220.

CHE Zhen, ZHANG Jun, YU Xin-yu etc. Optical Design and Research on Phosphors for White LED[J]. Chinese Journal of Luminescence, 2015,36(10): 1220-1226 DOI： 10.3788/fgxb20153610.1220.

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10

/mm

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。

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 10

/mm

the LED light spot has the most uniform light intensity distribution and chrominance

and approximates the standard white light source.

关键词

Keywords

references

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Sommer C, Wenzl F P, Hartmann P, et al. Tailoring of the color conversion elements in phosphor-converted high-power LEDs by optical simulations [J]. IEEE Photon. Technol. Lett., 2008, 20(9):739-741.

Xu G F, Rao H B, Yu X M, et al. Improvement of optical uniformity of white LEDs [J]. Chin. J. Lumin.(发光学报), 2008, 29(4):707-712 (in Chinese).

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