第 36 卷 第 3 期
2016 年 3 月
Vol. 36, No. 3
March, 2016
光 学 学 报
ACTA OPTICA SINICA
0323003-
高显色指数 LED 合成白光光源的研究
胡奕彬 庄其仁 刘士伟 赖传杜
华侨大学信息科学与工程学院, 福建 厦门 361021
摘要 针对目前白光发光二极管(LED)照明灯具显色性不高的问题,基于测色法研究了 LED 合成白光显色指数的计
算模型,根据参与合成的 LED 光源光谱及其数量,软件编程计算得出合成光源的色温、显色指数等参数。采用优化
的遍历范围,将实验测量得到的冷、暖白光及单色 LED 的光谱导入程序进行模拟计算,得到不同色温下合成光源的
显色指数最大值以及所对应的各种 LED 配比数量。结果表明,暖白光 LED 与红、绿、蓝 LED 合成可以获得色温 T
c
介
于 3500 K~12300 K、显色指数 R
a
介于 92.0~97.7 的白光;与红、绿、青 LED 合成可以获得 R
a
介于 95.0~97.8 的低色温白
光(3500 K~4500 K)。冷白光 LED 与红、绿、青 LED 合成 可以 获得 R
a
介于 90.9~98.4 的高色温白光 (8200 K~13000 K)。
对理论计算的 T
c
=7803 K、R
a
=97.29 的 LED 配比进行实际制作,实验测量得到 T
c
=7992 K,R
a
=97.1,理论计算结果与实
验结果吻合。
关键词 光学器件; 发光二极管; 显色指数; 色温; 合成白光
中图分类号 TN312.8 文献标识码 A
doi: 10.3788/AOS201636.0323003
Study on LEDs Synthesized High Color Rendering Index
White Light Source
Hu Yibin Zhuang Qiren Liu Shiwei Lai Chuandu
College of Information Science and Engineering, Huaqiao University, Xiamen, Fujian 361021, China
Abstract Targeting poor color rendering property of current white light-emitting diode (LED) lamps, based on
the colorimetry method, the calculation model for color rendering index of synthetic white light is studied and the
parameters like color temperature and color rendering index of the synthetic LED light source are obtained based
on the spectrum and quantity of light sources involved in the synthesis process. By using optimized traversal range,
the spectra of cold and warm white light and single- color LEDs are imported into the program for simulating
calculation, obtaining the maximum value of color rendering index of the synthesized light source under different
color temperatures as well as corresponding matched quantity of various LEDs. The results show that the synthesis
with warm white LEDs and red, green and blue LEDs can lead to white light whose color temperature falls in the
range of 3500 K~12300 K and color rendering index R
a
ranges between 92.0 and 97.7. The synthesis with warm white
LEDs and red, green and bluish-green LEDs can lead to low color temperature white light (3500 K~4500 K) whose
color rendering index R
a
ranges between 95.0 and 97.8. The synthesis with cold white LEDs and red, green and bluish-
green LEDs can lead to high color temperature white light (8200 K~13000 K) whose color rendering index R
a
ranges
between 90.9 and 98.4. An actual fabrication is conducted following the calculated LED amount to produce an LED
module with 7803 K color temperature and 97.29 color rendering index. Actual measurement shows that the
produced LED module has a color temperature of 7992 K and a color rendering index of 97.1, which is well matched
the theoretical results.
Key words optical devices; light-emitting diode; color rendering index; color temperature; synthesized white light
OCIS codes 230.3670; 330.1690; 330.1730
收稿日期: 2015-08-13; 收到修改稿日期: 2015-11-16
基金项目: 福建省科技计划重点项目(2012H0029)、泉州市科技计划(2014Z105)
作者简介: 胡奕彬(1991—),男,硕士研究生,主要从事 LED 照明方面的研究。E-mail: 646139553@qq.com
导师简介: 庄其仁(1960—),男,教授,主要从事半导体照明技术和光电检测技术等方面的研究。
E-mail: qrzhuang@hqu.edu.cn(通信联系人)
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