A New Method for Predicting Correlated Color Temperature of White LEDs

CHEN Sheng-xiong; ZHU Da-qing; LIAO Xin-yi

doi:10.3788/fgxb20173806.0820

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A New Method for Predicting Correlated Color Temperature of White LEDs

更新时间：2020-08-12

- A New Method for Predicting Correlated Color Temperature of White LEDs
- Chinese Journal of Luminescence Vol. 38, Issue 6, Pages: 820-827(2017)
- 作者机构：
  
  1. 华侨大学信息科学与工程学院, 福建厦门 361021
  2. 福建省光传输与变换重点实验室, 福建厦门 361021
- 作者简介：
- 基金信息：
  
  Supported by Open Fund of Key Laboratory of Optical Transmission and Transformation
- DOI：10.3788/fgxb20173806.0820
  CLC： O482.31
- Received：27 December 2016，
  
  Revised：30 March 2017，
  
  Published：05 June 2017
- 稿件说明：
移动端阅览
陈盛雄, 朱大庆, 廖欣怡. 一种预测白光LED相关色温的新方法[J]. 发光学报, 2017,38(6): 820-827

CHEN Sheng-xiong, ZHU Da-qing, LIAO Xin-yi. A New Method for Predicting Correlated Color Temperature of White LEDs[J]. Chinese Journal of Luminescence, 2017,38(6): 820-827
陈盛雄, 朱大庆, 廖欣怡. 一种预测白光LED相关色温的新方法[J]. 发光学报, 2017,38(6): 820-827 DOI： 10.3788/fgxb20173806.0820.

CHEN Sheng-xiong, ZHU Da-qing, LIAO Xin-yi. A New Method for Predicting Correlated Color Temperature of White LEDs[J]. Chinese Journal of Luminescence, 2017,38(6): 820-827 DOI： 10.3788/fgxb20173806.0820.

摘要

为了快速确定白光LED相关色温与黄色荧光粉浓度的关系，提出"中间参数

"的方法，以达到减少工作量，缩短工作时间，提高精度的目的。首先，通过理论分析推导出色品坐标与"中间参数

"的关系公式。然后，制备6组不同黄色荧光粉浓度的白光LED样品，计算出每个浓度对应的

值，拟合

值与荧光粉浓度的关系公式。在色品图上查找目标色温对应的色坐标，就可以利用"中间参数

"的方法预测目标色温对应的黄色荧光粉浓度。实验结果表明：利用"中间参数

"的方法生产的白光LED的色温与目标色温的误差在50 K以内。在预测高色温时，该方法比"直接探索色温与荧光粉浓度的关系"的方法的精度高一个数量级。而且利用该方法，采用2组不同荧光粉浓度样品相比于6组样品，在预测目标色温对应的荧光粉浓度时的相差量低于0.5%。因此，该方法具有耗时短、工作量少，精度高的优点。

Abstract

In order to quickly determine the relationship between the correlated color temperature (CCT) of white LEDs and the corresponding yellow phosphor concentration

a method ofintermediate parameter

was proposed in this paper

which can reduce the workload

shorten the working time and improve the precision. First

the formula of the chromatic coordinate and theintermediate parameter

was deduced by theoretical analysis. Then

six groups white LED samples with different yellow phosphor concentration were fabricated. After that

the

valueof each concentration was calculated. It is found that the relationship between the

value and the phosphor concentration is linear. The chromatic coordinates of the target CCT can be found on the chromaticity diagram

so the yellow phosphor concentration of the target CCT can be predicted by using this method. The experimental results show that the deviation between the CCT of white LED and the target CCT is less than 50 K by using this method. In the prediction of a high CCT

this method is more accurate by one order of magnitude than the method ofdirect exploration of the relationship between CCT and phosphor concentration. And in predicting the phosphor concentration of a target CCT

the difference of phosphor concentration between the two groups of phosphor concentration samples and the six groups of samples is less than 0.5% by using this method. Therefore

the method ofintermediate parameter

has the advantages of short time

less workload and more accurate in determining the phosphor concentration of the white LED with target CCT.

关键词

Keywords

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Related Institution

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