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基于三基色LED的线性调光混合照明

黄涛 夏振平 彭子雄 刘宇杰 李超超 顾敏明

黄涛, 夏振平, 彭子雄, 刘宇杰, 李超超, 顾敏明. 基于三基色LED的线性调光混合照明[J]. 中国光学(中英文), 2024, 17(1): 108-117. doi: 10.37188/CO.2023-0084
引用本文: 黄涛, 夏振平, 彭子雄, 刘宇杰, 李超超, 顾敏明. 基于三基色LED的线性调光混合照明[J]. 中国光学(中英文), 2024, 17(1): 108-117. doi: 10.37188/CO.2023-0084
HUANG Tao, XIA Zhen-ping, PENG Zi-xiong, LIU Yu-jie, LI Chao-chao, GU Min-ming. Mixed lighting based on the linear dimming of three-primary-color LEDs[J]. Chinese Optics, 2024, 17(1): 108-117. doi: 10.37188/CO.2023-0084
Citation: HUANG Tao, XIA Zhen-ping, PENG Zi-xiong, LIU Yu-jie, LI Chao-chao, GU Min-ming. Mixed lighting based on the linear dimming of three-primary-color LEDs[J]. Chinese Optics, 2024, 17(1): 108-117. doi: 10.37188/CO.2023-0084

基于三基色LED的线性调光混合照明

doi: 10.37188/CO.2023-0084
基金项目: 国家自然科学基金(No. 62002254);江苏省自然科学基金(No. BK20200988)
详细信息
    作者简介:

    黄 涛(1998—),男,江西丰城人,硕士研究生,2021年于九江学院获得学士学位,主要从事智能照明和健康照明的研究。E-mail:htao2021998@163.com

    夏振平(1985—),男,江苏兴化人,副教授,硕士生导师,2014年于东南大学获得博士学位,主要从事视觉相关的显示和照明质量的测量、评价和优化方面的研究。E-mail:xzp@usts.edu.cn

  • 中图分类号: TN206

Mixed lighting based on the linear dimming of three-primary-color LEDs

Funds: Supported by the National Natural Science Foundation of China (No. 62002254); the Natural Science Foundation of Jiangsu Province, China (No. BK20200988)
More Information
  • 摘要:

    为提供高品质、智能健康的照明光源,基于三基色LED光源构建了线性调光混合照明系统,并提出一种调光调色的优化方法。混合光源的光色度和光强度分别用色温和明度等级来设定,使得混合照明效果更加符合“人因照明”的需求。在系统的智能优化配光过程中,将色温转化为CIE $ {u}'{v}' $色度坐标,明度转化为亮度,使优化计算更加精确。该系统采用线性调光的方式,既能有效避免混合光源闪烁带来的健康安全问题,配合优化算法又有效解决了线性调光色度漂移大的问题。实验结果表明,在2000 K~8000 K的色温范围内,混合照明系统混合光的色度稳定性保持在1阶CIE $ {u}'{v}' $圆内,在对应色温下的整个光强度调节范围内无可察觉的色差。采用线性调光方式在保持光色度稳定上比脉冲宽度调光方式效果更佳。理论探究和实验结果表明该混光照明系统简易可行,具有较高的实用价值。

     

  • 图 1  CIE 1931 xy色度图。(a)黑体轨迹及相关色温等温线;(b)三基色混光区域图及色漂移示意图

    Figure 1.  CIE 1931 xy chromaticity diagram. (a) Blackbody locus and correlated color temperature isotherms; (b) three primary colors mixed lighting region diagram and color draft schematic

    图 2  CIE1931 xy 色度图上的10阶麦克亚当椭圆

    Figure 2.  10-step MacAdam ellipse in CIE1931 xy chromaticity diagram

    图 3  CIE 1976 $ {u}'{v}' $ 色度图上的5阶$ {u}'{v}' $

    Figure 3.  5-step $ {u}'{v}' $ circle on the CIE 1976 $ {u}'{v}' $ chromaticity diagram

    图 4  明度与亮度的关系曲线

    Figure 4.  The relationship between brightness and luminance

    图 5  电流控制信号查找流程图

    Figure 5.  Retrieval flowchart of the current control signal

    图 6  LED光源相对光谱功率分布

    Figure 6.  Relative spectral power distribution of LED light sources

    图 7  CIE$ {u}'{v}' $圆表示的照明系统色度稳定性

    Figure 7.  Chroma stability of the lighting system represented by CIE $ {u}'{v}' $ circle

    图 8  6500 K下照明系统色度稳定性比较。(a)线性调光;(b)PWM调光

    Figure 8.  Comparison of chroma stability of lighting systems at 6500 K. (a) Linear dimming; (b) PWM dimming

    表  1  三基色LED光源数据

    Table  1.   Data of three-primary-color LED light sources

    光源类型 x y 亮度值
    /cd·m−2
    电流值/mA
    Red LED 0.6636 0.3112 34.33 157.9
    Green LED 0.1837 0.7164 74.26 183.5
    Blue LED 0.1464 0.0450 12.55 185.3
    下载: 导出CSV

    表  2  三基色LED线性调光混合照明的色度稳定性

    Table  2.   Chroma stability of mixed lighting based on linear dimming of three-primary-color LEDs

    100%明度
    下的色温/K
    0~100%明度对应
    色温范围/K
    最大
    色温差/K
    $ {u}'{v}' $
    色差
    阶数
    2700 2692~2711 19 0.0010 1
    3000 2992~3006 14 0.0005 1
    3500 3486~3513 27 0.0008 1
    4000 3989~4006 17 0.0004 1
    5000 4994~5012 18 0.0003 1
    6500 6483~6517 34 0.0002 1
    下载: 导出CSV

    表  3  三基色LED光源在$ {T}_{{\mathrm{C}}} $=6500 K时不同明度下的电流及$ {u}'{v}' $坐标值

    Table  3.   The currents and $ {u}'{v}' $ coordinate values of three-primary-color LED light sources under different brightnesses at $ {T}_{{\mathrm{C}}} $=6500 K

    明度
    等级/%
    红光LED
    电流值/mA
    绿光LED
    电流值/mA
    蓝光LED
    电流值/mA
    $ {u}' $$ {v}' $
    1062.1075.3037.190.20040.4657
    2078.4093.9047.330.20030.4656
    3093.80111.956.650.20040.4656
    40106.5129.665.350.20040.4656
    50115.6144.269.850.20040.4656
    60124.3149.276.260.20060.4654
    70132.0159.380.940.20040.4656
    80144.3169.585.200.20030.4657
    90150.0181.791.290.20040.4655
    100153.4179.789.710.20050.4656
    下载: 导出CSV

    表  4  三基色LED的PWM调光混合照明的色度稳定性

    Table  4.   Chroma stability of mixed lighting based on PWM dimming of three-primary-color LEDs

    100%明度
    下的色温/K
    0~100%明度对应
    色温范围/K
    最大
    色温差/K
    $ {u}'{v}' $
    色差
    阶数
    2700 2653~2752 99 0.0034 3
    3000 2940~3058 118 0.0036 3
    3500 3432~3554 122 0.0033 3
    4000 3964~4198 234 0.0037 3
    5000 4933~5079 146 0.0038 3
    6500 6403~6590 187 0.0037 3
    下载: 导出CSV
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  • 收稿日期:  2023-05-09
  • 修回日期:  2023-05-19
  • 网络出版日期:  2023-09-21

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