Chinese Optics, Volume. 17, Issue 1, 108(2024)
Mixed lighting based on the linear dimming of three-primary-color LEDs
Fig. 1. CIE 1931
Fig. 2. 10-step MacAdam ellipse in CIE1931
Fig. 3. 5-step circle on the CIE 1976 chromaticity diagramCIE 1976 色度图上的5阶圆
Fig. 7. Chroma stability of the lighting system represented by CIE circleCIE圆表示的照明系统色度稳定性
Fig. 8. Comparison of chroma stability of lighting systems at 6500 K. (a) Linear dimming; (b) PWM dimming
Table 1. Data of three-primary-color LED light sources
View tableView in ArticleTable 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
Table 2. Chroma stability of mixed lighting based on linear dimming of three-primary-color LEDs
View tableView in ArticleTable 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
Table 3. The currents and
\begin{document}$ {u}'{v}' $\end{document} \begin{document}$ {T}_{{\mathrm{C}}} $\end{document} View tableView in ArticleTable 3. The currents and
\begin{document}$ {u}'{v}' $\end{document} \begin{document}$ {T}_{{\mathrm{C}}} $\end{document} 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
Table 4. Chroma stability of mixed lighting based on PWM dimming of three-primary-color LEDs
View tableView in ArticleTable 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
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Tao HUANG, Zhen-ping XIA, Zi-xiong PENG, Yu-jie LIU, Chao-chao LI, Min-ming GU. Mixed lighting based on the linear dimming of three-primary-color LEDs[J]. Chinese Optics, 2024, 17(1): 108
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Received: May. 9, 2023
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Published Online: Mar. 28, 2024
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