Investigation on The Circadian Action Factor of RGB White LEDs

ZHENG Li-li; GUO Zi-quan; YAN Wei; WU Ting-zhu; LYU Yi-jun; GAO Yu-lin; SHI Yuan; CHEN Zhong

doi:10.3788/fgxb20163711.1384

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Investigation on The Circadian Action Factor of RGB White LEDs

更新时间：2020-08-12

- Investigation on The Circadian Action Factor of RGB White LEDs
- Chinese Journal of Luminescence Vol. 37, Issue 11, Pages: 1384-1389(2016)
- 作者机构：
  
  1. 厦门大学电子科学系福建省半导体照明工程技术研究中心, 福建厦门 361005
  2. 厦门市产品质量监督检验院国家半导体发光器件(LED)应用产品质量监督检验中心, 福建厦门 361004
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20163711.1384
  CLC： TU113.19
- Received：19 May 2016，
  
  Revised：24 August 2016，
  
  Published：05 November 2016
- 稿件说明：
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郑莉莉, 郭自泉, 严威等. 三基色白光LED的司辰节律因子研究[J]. 发光学报, 2016,37(11): 1384-1389

ZHENG Li-li, GUO Zi-quan, YAN Wei etc. Investigation on The Circadian Action Factor of RGB White LEDs[J]. Chinese Journal of Luminescence, 2016,37(11): 1384-1389
郑莉莉, 郭自泉, 严威等. 三基色白光LED的司辰节律因子研究[J]. 发光学报, 2016,37(11): 1384-1389 DOI： 10.3788/fgxb20163711.1384.

ZHENG Li-li, GUO Zi-quan, YAN Wei etc. Investigation on The Circadian Action Factor of RGB White LEDs[J]. Chinese Journal of Luminescence, 2016,37(11): 1384-1389 DOI： 10.3788/fgxb20163711.1384.

摘要

采用司辰节律因子模型，通过计算三基色白光LED光源在不同工作电流下的司辰节律因子，对可调色温的三基色白光LED光源进行非视觉效应研究。为了获取与自然光非视觉效应类似的LED白光，建立了司辰节律因子和相关色温分别相对于工作电流的关系模型，从而已知自然光的司辰节律因子和相关色温，就可以确定三基色LED的工作电流。通过测试一天内不同时刻的自然光光谱，根据上述模型推算出了三基色LED的工作电流。在所推算的三基色电流下，测试了白光LED光谱参数并计算了相应的司辰节律因子。与自然光司辰节律因子的对比结果表明，理论值和实验值的误差在1.1%以内，证实该方法具有可行性。本文所呈现的方法对于利用三基色白光LED模拟自然光具有一定的指导意义。

Abstract

The circadian action factor (CAF) model was adopted to study the non-visual biological effects for the three-primary color-tunable white LEDs by calculating CAFs at various driving currents. In order to obtain the white light similar to the natural light according to non-visual biological effects

the models of CAF

versus

current and CCT

versus

current were generated. Therefore

the driving currents of three-primary LEDs could be determined after the CAF and the CCT of the natural light were known. Based on aforementioned models

and after the natural light at different times in a day was tested

the driving currents of three-primary LEDs were deduced. Then

driven by these currents

white LEDs were tested and their CAFs were calculated. A comparison between calculated values and experimental counterparts shows that the difference lies within 1.1%

suggesting the feasibility of this approach. This work appears meaningful for mimicking the natural light by using three-primary white LEDs.

关键词

Keywords

references

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