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

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

苏州科技大学电子与信息工程学院, 江苏苏州 215009

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
计量
- 文章访问数: 184
- HTML全文浏览量: 71
- PDF下载量: 138
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-09
- 修回日期: 2023-05-19
- 网络出版日期: 2023-09-21

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

College of Electronics and Information Engineering, Suzhou University of Science and Technology, Suzhou 215009, China

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

More Information

Corresponding author: xzp@usts.edu.cn

摘要

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。
- 三基色LED /
- 混合照明 /
- 线性调光 /
- 人因照明 /
- 色差 /
- CIE $ {u}'{v}' $圆
Abstract:
To provide high-quality, intelligent, and healthy lighting sources, a linear dimming mixed lighting system is constructed using three-primary-color LED light sources. An optimization method for dimming and color mixing is proposed. The light chromaticity and light intensity of the mixed light source are set by color temperature and brightness level, which makes the mixed lighting effect more in line with the demand of "human-centric lighting". In the intelligent optimization of the system, the color temperature is converted into CIE $ {u}'{v}' $ chromaticity coordinates, and the brightness is converted into luminance to make the optimization calculations more accurate. The system adopts the linear dimming method, effectively avoiding the health and safety hazards caused by light source flicker, and effectively solves the problem of large linear dimming chromaticity drift with an optimization algorithm. Experiment results demonstate that the chromatic stability of the mixed light in the mixed lighting system is maintained within the first step of the CIE ${u}'{v}' $ chromaticity diagram in the color temperature range of 2000 K−8000 K. Moreover, the system exhibits imperceptible color deviation over the entire range of light intensity adjustments at the corresponding color temperature. This finding also indicates that linear dimming is better than the pulse-width dimming method in keeping the optical chromaticity stable. Theoretical exploration and experimental results demonstrate that the mixed lighting system is simple and feasible, with significant practical value.
- three-primary-color LEDs /
- mixed lighting /
- linear dimming /
- human-centric lighting /
- chromatic aberration /
- CIE $ {u}'{v}' $ circle

HTML全文

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

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

下载: 全尺寸图片幻灯片

图 4 明度与亮度的关系曲线

Figure 4. The relationship between brightness and luminance

下载: 全尺寸图片幻灯片

图 5 电流控制信号查找流程图

Figure 5. Retrieval flowchart of the current control signal

下载: 全尺寸图片幻灯片

图 6 LED光源相对光谱功率分布

Figure 6. Relative spectral power distribution of LED light sources

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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

下载: 全尺寸图片幻灯片

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}' $
10	62.10	75.30	37.19	0.2004	0.4657
20	78.40	93.90	47.33	0.2003	0.4656
30	93.80	111.9	56.65	0.2004	0.4656
40	106.5	129.6	65.35	0.2004	0.4656
50	115.6	144.2	69.85	0.2004	0.4656
60	124.3	149.2	76.26	0.2006	0.4654
70	132.0	159.3	80.94	0.2004	0.4656
80	144.3	169.5	85.20	0.2003	0.4657
90	150.0	181.7	91.29	0.2004	0.4655
100	153.4	179.7	89.71	0.2005	0.4656

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

参考文献(23)

[1]	林嘉源, 邹念育, 梁静, 等. LED光源照度与色温对佩伯尔幻象展陈效果的作用趋势[J]. 中国光学(中英文),2023,16(2):339-347. doi: 10.37188/CO.2022-0027 LIN J Y, ZHOU N Y, LIANG J, et al. Trend of action on the display effect based on Pepper’s ghost images affected by illumination and color temperature from led light sources[J]. Chinese Optics, 2023, 16(2): 339-347. (in Chinese) doi: 10.37188/CO.2022-0027
[2]	吴福培, 谢晓扬, 李昇平. 一种散热型发光二极管阵列结构光源设计方法[J]. 中国光学,2021,14(3):670-684. doi: 10.37188/CO.2020-0211 WU F P, XIE X Y, LI SH P. A thermal dissipation design method for LED array structure illumination[J]. Chinese Optics, 2021, 14(3): 670-684. (in Chinese) doi: 10.37188/CO.2020-0211
[3]	董冰, 佟首峰, 张鹏, 等. 20 m水下无线蓝光LED通信系统样机设计[J]. 中国光学,2021,14(6):1451-1458. doi: 10.37188/CO.2020-0190 DONG B, DONG SH F, ZHANG P, et al. Design of a 20 m underwater wireless optical communication system based on blue LED[J]. Chinese Optics, 2021, 14(6): 1451-1458. (in Chinese) doi: 10.37188/CO.2020-0190
[4]	夏振平, 付保川, 程成. 基于冷暖白光LED的线性调光混合照明[J]. 发光学报,2018,39(5):730-736. doi: 10.3788/fgxb20183905.0730 XIA ZH P, FU B CH, CHENG CH. Mixed lighting based on linear dimming of cold and warm white LEDs[J]. Chinese Journal of Luminescence, 2018, 39(5): 730-736. (in Chinese) doi: 10.3788/fgxb20183905.0730
[5]	宋鹏程, 文尚胜, 尚俊, 等. 基于PWM的三基色LED的调光调色方法[J]. 光学学报,2015,35(2):0223001. doi: 10.3788/AOS201535.0223001 SONG P CH, WEN SH SH, SHANG J, et al. A dimming method for RGB LED based on three channels′ PWM[J]. Acta Optica Sinica, 2015, 35(2): 0223001. (in Chinese) doi: 10.3788/AOS201535.0223001
[6]	熊木地, 葛凯彬, 徐晓, 等. LED显示串行总线数据分发芯片的设计[J]. 液晶与显示,2023,38(5):602-608. doi: 10.37188/CJLCD.2022-0409 XIONG M D, GE K B, XU X, et al. Design of serial bus data distribution chip for LED display[J]. Chinese Journal of Liquid Crystals and Displays, 2023, 38(5): 602-608. (in Chinese) doi: 10.37188/CJLCD.2022-0409
[7]	李宗涛, 李杰鑫, 郑家龙, 等. 量子点LED显示研究进展: 材料、封装涂层、图案化显示应用[J]. 液晶与显示,2023,38(3):319-341. doi: 10.37188/CJLCD.2022-0361 LI Z T, LI J X, ZHENG J L, et al. Review of quantum dot-based LED display: materials, encapsulation coatings, patterned display applications[J]. Chinese Journal of Liquid Crystals and Displays, 2023, 38(3): 319-341. (in Chinese) doi: 10.37188/CJLCD.2022-0361
[8]	杨梅慧, 林伟瀚, 于海, 等. Mini LED显示光学性能分析[J]. 液晶与显示,2022,37(6):680-686. doi: 10.37188/CJLCD.2022-0032 YANG M H, LIN W H, YU H, et al. Optical performance analysis of Mini LED display[J]. Chinese Journal of Liquid Crystals and Displays, 2022, 37(6): 680-686. (in Chinese) doi: 10.37188/CJLCD.2022-0032
[9]	BERSON D M, DUNN F A, TAKAO M. Phototransduction by retinal ganglion cells that set the circadian clock[J]. Science, 2002, 295(5557): 1070-1073. doi: 10.1126/science.1067262
[10]	FIGUEIRO M G, REA M S. Office lighting and personal light exposures in two seasons: impact on sleep and mood[J]. Lighting Research & Technology, 2016, 48(3): 352-364.
[11]	YANG C, YANG P, LIANG S, et al. The effects of illuminance and correlated colour temperature on daytime melatonin levels in undergraduates with sub-syndromal SAD[J]. Lighting Research & Technology, 2020, 52(6): 722-735.
[12]	NIE J X, CHEN ZH ZH, JIAO F, et al. Low blue light hazard for tunable white light emitting diode with high color fidelity and circadian performances[J]. Optics & Laser Technology, 2021, 135: 106709.
[13]	LU Y, LI W, XU W, et al. Impacts of LED dynamic white lighting on atmosphere perception[J]. Lighting Research & Technology, 2019, 51(8): 1143-1158.
[14]	沈雪华, 陈焕庭, 陈赐海, 等. 白光LED光谱特性及司辰节律因子[J]. 发光学报,2019,40(12):1514-1522. doi: 10.3788/fgxb20194012.1514 SHEN X H, CHEN H T, CHEN C H, et al. Spectral characteristics and circadian action factor of white LEDs[J]. Chinese Journal of Luminescence, 2019, 40(12): 1514-1522. (in Chinese) doi: 10.3788/fgxb20194012.1514
[15]	李剑飞, 周晓明. 基于LED电流、温度光谱模型的照明系统研究[J]. 红外与激光工程,2022,51(7):20210727. LI J F, ZHOU X M. Research on lighting system based on LED current and temperature spectrum model[J]. Infrared and Laser Engineering, 2022, 51(7): 20210727. (in Chinese)
[16]	ZHANG J J, GUO W H, XIE B, et al. Blue light hazard optimization for white light-emitting diode sources with high luminous efficacy of radiation and high color rendering index[J]. Optics & Laser Technology, 2017, 94: 193-198.
[17]	崔嘉杰, 王新宇, 罗萍. 一种基于Triac调光的小功率LED驱动电路[J]. 微电子学,2013,43(4):488-490,498. CUI J J, WANG X Y, LUO P. A low power LED driver based on triac dimming[J]. Microelectronics, 2013, 43(4): 488-490,498. (in Chinese)
[18]	YANG J, ZHANG T CH, LIN Y D, et al. Effect of illuminance and light strobe on attention and visual fatigue in indoor lighting[C]. 2019 16th China International Forum on Solid State Lighting & 2019 International Forum on Wide Bandgap Semiconductors China (SSLChina: IFWS), IEEE, 2019: 149-152.
[19]	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. doi: 10.3788/AOS201434.0123004 XU D SH, 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) doi: 10.3788/AOS201434.0123004
[20]	田会娟, 胡阳, 陈陶, 等. 基于红/绿/蓝/青/黄/暖白6色LED的白光光谱优化方法[J]. 光学学报, 2020, 40(8): 0823001. TIAN H J, HU Y, CHEN T, et al. Spectral optimization of a mixed white light-emitting diode (LED) cluster comprising a red/green/blue/cyan/yellow/warm white LED[J]. Acta Optica Sinica, 2020, 40(8): 0823001. (in Chinese)
[21]	OHNO Y. Color rendering and luminous efficacy of white LED spectra[J]. Proceedings of SPIE, 2004, 5530: 88-98. doi: 10.1117/12.565757
[22]	黄艳, 任胜东, 陈聪, 等. CIE关于光源色差的最新技术注解解读[J]. 照明工程学报,2013,24(6):42-44,65. doi: 10.3969/j.issn.1004-440X.2013.06.008 HUANG Y, REN SH D, CHEN C, et al. Explanation of CIE new technical note on the colour difference of light sources[J]. China Illuminating Engineering Journal, 2013, 24(6): 42-44,65. (in Chinese) doi: 10.3969/j.issn.1004-440X.2013.06.008
[23]	GILCHRIST A. Mapping luminance onto lightness in vision and art[J]. Proceedings of SPIE, 2013, 8651: 865105. doi: 10.1117/12.2013205