Design of white LED array for uniform correlated color temperature distribution

Ying HU; Zhou-ping SU; Jing-hui CAO

doi:10.3788/YJYXS20183304.0326

您当前的位置：

首页 >

文章列表页 >

Design of white LED array for uniform correlated color temperature distribution

Image Processing | 更新时间：2020-07-06

- Design of white LED array for uniform correlated color temperature distribution
- Chinese Journal of Liquid Crystals and Displays Vol. 33, Issue 4, Pages: 326-337(2018)
- 作者机构：
  
  1.江南大学理学院, 江苏无锡 214122
  2.江苏省轻工光电工程技术研究中心, 江苏无锡 214122
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20183304.0326
  CLC： O432
- Received：27 October 2017，
  
  Accepted：22 January 2018，
  
  Published：05 April 2018
- 稿件说明：
移动端阅览
Ying HU, Zhou-ping SU, Jing-hui CAO. Design of white LED array for uniform correlated color temperature distribution[J]. Chinese journal of liquid crystals and displays, 2018, 33(4): 326-337.
DOI：

Ying HU, Zhou-ping SU, Jing-hui CAO. Design of white LED array for uniform correlated color temperature distribution[J]. Chinese journal of liquid crystals and displays, 2018, 33(4): 326-337. DOI： 10.3788/YJYXS20183304.0326.

摘要

本文通过优化白光LED阵列的结构，实现在目标面上产生均匀的色温分布。通过收集系统中每颗LED的色温坐标矩阵与照度矩阵，根据色温叠加公式，计算LED阵列在目标面上叠加后的色温分布，构建目标面上色温均匀度评价函数，评价函数反应目标面上色温分布的均匀性。通过优化阵列中LED的位置，使得评价函数的值最小，即目标面上色温均匀度最高。运用这种方法我们优化设计了两个实例：（1）相同规格的9颗白光LED方形阵列；（2）不同规格16颗圆形白光LED阵列，优化后色温均匀度均达到了95%以上。利用这种方法同样可以在目标面上同时实现均匀的色温分布与照度分布，设计9颗相同规格的白光LED以3×3方形阵列方式排布，优化后色温均匀度从78%提升到88.7%，照度的均匀度从42%提升到87.6%。分析实际加工制造过程产生的误差对色温均匀度的影响，随着制造误差的增大优化后色温均匀度下降，但均优于优化前色温分布均匀性。

Abstract

In this paper

an algorithm is proposed to design white LED array for uniform distribution of the correlated color temperature (CCT) on the target surface. The color temperature distribution of LED array on the target surface can be calculated by superposition of color temperature superposition from different LEDs in the array. A merit function is constructed which reflects the uniformity of CCT distribution. The value of the merit function depends on all LED positions. By optimizing all LED positions

the merit function achieves the minimal value. When merit function achieves the minimal value

the uniformity of the CCT distribution will reaches the highest. By the method

two LED arrays are designed:(1) Square array consisting of 9 identical white LEDs (2) Circular array consisting of 16 white LEDs. After optimization

the two LED arrays both produce uniform CCT distribution with a uniformity of higher 95%.In addition

we also design another LED array which controls the uniformity of irradiance and CCT distribution simultaneously by constructing a special evaluation function. By optimizing the configuration of the LED array

the uniformity of the CCT is increased from 78% to 88.7% and the uniformity of the irradiance distribution is increased from 42% to 87.6%. Finally

the influence of the CCT errors of LEDs on the uniformity is analyzed. The results show that the uniformity of LED array will decrease with the increasing of the CCT errors of each LED. Also the algorithm is still quite effective for designing the LED array in which each LED has different CCT error.

关键词

Keywords

references

MUTHU S, SCHUURMANS F J P, PASHLEY M D. Red, green, and blue LEDs for white light illumination[J]. IEEE Journal of Selected Topics in Quantum Electronics , 2002, 8(2):333-338.

吴庆, 黄先, 刘丽, 等.色坐标对白光LED光通量的影响[J].发光学报, 2007, 28(5):736-740.

WU Q, HUANG X, LIU L, et al . The corresponding relation between the color coordinate and the luminous flux[J]. Chinese Journal of Luminescence , 2007, 28(5):736-740. (in Chinese)

徐国芳, 饶海波, 余心梅, 等.白光LED光斑均匀性的改进[J].发光学报, 2008, 29(4):707-712.

XU G F, RAO H B, YU X M, et al . Improvement of optical uniformity of white LEDs[J]. Chinese Journal of Luminescence , 2008, 29(4):707-712. (in Chinese)

WANG K, WU D, CHEN F, et al . Angular color uniformity enhancement of white light-emitting diodes integrated with freeform lenses[J].Optics Letters, 2010, 35(11):1860-1862.

宋国华, 缪建文, 施建珍, 等.一种提高白光LED相关色温分布均匀性的方法[J].光电子·激光, 2010, 21(7):983-987.

SONG G H, MIAO J W, SHI J Z, et al . An improvement method of unifrmity of color temperature of white-LED[J]. Journal of Optoelectronics·Laser , 2010, 21(7):983-987. (in Chinese)

MORENO I, CONTRERAS U. Color distribution from multicolor LED arrays[J]. Optics Express , 2007, 15(6):3607-3618.

王加文, 苏宙平, 袁志军, 等.LED阵列模组化中的照度均匀性问题[J].光子学报, 2014, 43(8):0822004.

WANG J W, SU Z P, YUAN Z J, et al . Study on uniformity of LED array illumination distribution on target plane[J]. Acta Photonica Sinica , 2014, 43(8):0822004. (in Chinese)

SU Z P, XUE D L, JI Z C. Designing LED array for uniform illumination distribution by simulated annealing algorithm[J]. Optics Express , 2012, 20(S6):A843-A855.

WU D H, WANG J W, SU Z P. Optimization and integration of LED array for uniform illumination distribution[J]. Optoelectronics Letters , 2014, 10(5):335-339.

殷录桥, 杨卫桥, 李抒智, 等.基于三基色的动态色温白光发光二极管照明光源[J].光学学报, 2011, 31(5):0523004.

YIN L Q, YANG W Q, LI S Z, et al . Dynamic color temperature white lighting source based on red green and blue light emitting diode[J]. Acta Optica Sinica , 2011, 31(5):0523004. (in Chinese)

刘平宇, 陈长缨, 张浩, 等.基于红白蓝模式色温可调的LED照明系统[J].固体电子学研究与进展, 2014, 34(2):163-169.

LIU P Y, CHEN C Y, ZHANG H, et al . Adjustable color temperature LED illumination system based on RWB model[J]. Research & Progress of SSE , 2014, 34(2):163-169. (in Chinese)

郝允祥, 陈遐举, 张保洲.光度学[M].北京:中国计量出版社, 2010.

HAOY X, CHEN X J, Zhang B Z. Photometry [M]. Beijing:Chinese Metrology Publishing House, 2010. (in Chinese)

徐代升, 陈晓, 朱翔, 等.基于冷暖白光LED的可调色温可调光照明光源[J].光学学报, 2014, 34(1):0123004.

XU D S, CHEN X, ZHU X, et al . A dimming lighting source based on cold and warm white LEDs[J]. Acta Optica Sinica , 2014, 34(1):0123004. (in Chinese)

陈国飞. 基于模拟退火的粒子群算法的函数优化研究[D]. 长沙: 中南大学, 2013. http://www.wanfangdata.com.cn/details/detail.do?_type=degree&id=Y2685543

CHEN G F. Research of function optimization of PSO based on simulated annealing[D]. Changsha: Central South University, 2013. (in Chinese)

龚纯, 王正林.精通MATLAB最优化计算[M].3版.北京:电子工业出版社, 2014.

GONG C, WANG Z L. Proficient in MATLAB Optimization [M]. 3rd ed. Beijing:Publishing House of Electronics Industry, 2014. (in Chinese)

王加文. LED光源等效模型建立及均匀照度色度透镜设计[D]. 无锡: 江南大学, 2014. http://cdmd.cnki.com.cn/Article/CDMD-10295-1015523899.htm

WANG J W. Modeling equivalent LEDs source and designing lens for uniform illumination and color distribution[D]. Wuxi: Jiangnan University, 2014. (in Chinese)

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Color temperature conversion optical film based on colored glass

Regulated method of realizing white balance for LCD based on FPGA

Uniform dimming technologies for large-area OLED module

Design of LCD Backlight Module Based on Plano-Concave Lens Array

Related Author

Li-fa HU

Tao LIU

Jing-long YAN

Hua-xin ZHU

Dong-sheng RAO

LIU Bo

QI Ling-yun

LIU Ru-feng

Related Institution

Jiangsu Province Research Center of Light Industry Optoelectronic Engineering and Technology Research

AVIC Huadong Photoelectric Co., Ltd

National Engineering Lab of Special Display Technology

Key Laboratory of Modern Display Technology, Wuhu 241002, China

College of Physics and Information Engineering of Fuzhou University

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China 130033 Postal code：130033
Tel：0431-86176059 Email：yjxs@ciomp.ac.cn
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰