Optimization Dimming Method of Mixed Light for White Light Emitting Diode with High Color Rendering Index Based on Pulse Width Modulation

TIAN Hui-juan; HU Yang; CHEN Tao; LIU Jian-xin; CAI Min-peng; GUAN Tao

doi:10.3788/fgxb20194012.1538

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Optimization Dimming Method of Mixed Light for White Light Emitting Diode with High Color Rendering Index Based on Pulse Width Modulation

Device Fabrication and Physics | 更新时间：2020-08-12

- Optimization Dimming Method of Mixed Light for White Light Emitting Diode with High Color Rendering Index Based on Pulse Width Modulation
- Chinese Journal of Luminescence Vol. 40, Issue 12, Pages: 1538-1545(2019)
- 作者机构：
  
  1. 天津工业大学电气工程与自动化学院, 天津市电工电能新技术重点实验室, 天津 300387
  2. 大功率半导体照明应运系统教育部工程研究中心, 天津 300387
  3. 天津工业大学电子与信息工程学院, 天津 300387
  4. 天津成科传动机电技术股份有限公司, 天津 300384
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundation of China(61504095)
- DOI：10.3788/fgxb20194012.1538
  CLC： TN206
- Received：25 July 2019，
  
  Revised：16 September 2019，
  
  Published Online：05 December 2019，
  
  Published：05 December 2019
- 稿件说明：
移动端阅览
田会娟, 胡阳, 陈陶等. 基于PWM调光的高显色性白光LED混光优化方法[J]. 发光学报, 2019,40(12): 1538-1545

TIAN Hui-juan, HU Yang, CHEN Tao etc. Optimization Dimming Method of Mixed Light for White Light Emitting Diode with High Color Rendering Index Based on Pulse Width Modulation[J]. Chinese Journal of Luminescence, 2019,40(12): 1538-1545
田会娟, 胡阳, 陈陶等. 基于PWM调光的高显色性白光LED混光优化方法[J]. 发光学报, 2019,40(12): 1538-1545 DOI： 10.3788/fgxb20194012.1538.

TIAN Hui-juan, HU Yang, CHEN Tao etc. Optimization Dimming Method of Mixed Light for White Light Emitting Diode with High Color Rendering Index Based on Pulse Width Modulation[J]. Chinese Journal of Luminescence, 2019,40(12): 1538-1545 DOI： 10.3788/fgxb20194012.1538.

摘要

提出了一种基于脉冲宽度调制（PWM）的红/绿/蓝/暖白（R/G/B/WW）四色发光二极管（LED）白光混合方法。该方法根据多基色混合白光光源相对光谱功率分布（SPD）符合线性叠加原理，采用1931 CIE-

XYZ

三刺激值建立混合光中各光源色坐标与贡献率的关系。在优化目标显色性能最佳时，建立混合光的光通量与占空比的函数关系，并采用R/G/B/WW四色LED进行实验验证。结果表明，R/G/B/WW LED模块可实现一般显色指数

在95以上、其最大相对误差为1.35%、相关色温在3 000~7 000 K、光通量为200~1 000 lm、发光效率在170~240 lm/W范围变化的白光调节。

Abstract

This paper proposes a method of white light mixed for red/green/blue/warm-white (R/G/B/WW) light emitting diode (LED) based on pulse width modulation (PWM). According to the principle of linear superposition of the relative spectral power distribution (SPD) of multi-color white LED

the proposed model adopts 1931 CIE-

XYZ

tristimulus to determine the relationship between the color coordinate and the rate of contribution for each channel of the LED clusters. When the color rendering performance is optimized

the functional relationship between luminous flux and duty cycles of the mixed light is established. And the experimental verification is carried out with R/G/B/WW LED clusters. The experimental results show that R/G/B/WW LED model can realize that the color rendering index

is larger than 95 and its maximum relative error is 1.35%

the correlation color temperature (CCT)

the luminous flux and the luminous efficiency change in the range of 3 000~7 000 K

200~1 000 lm

170~240 lm/W

respectively.

关键词

Keywords

references

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