XIA Zhen-ping, FU Bao-chuan, CHENG Cheng. Mixed Lighting Based on Linear Dimming of Cold and Warm White LEDs[J]. Chinese Journal of Luminescence, 2018,39(5): 730-736
XIA Zhen-ping, FU Bao-chuan, CHENG Cheng. Mixed Lighting Based on Linear Dimming of Cold and Warm White LEDs[J]. Chinese Journal of Luminescence, 2018,39(5): 730-736 DOI: 10.3788/fgxb20183905.0730.
Mixed Lighting Based on Linear Dimming of Cold and Warm White LEDs
the linear dimming mixed lighting system and its dimming and color modulation method were established based on the cold and warm white LEDs. The mixed lighting source set the light color and intensity using color temperature and lightness
which was more accord with humanized requirements. In the procedure of system intelligent light distribution optimization
the color temperature was converted to chromaticity coordinate on the CIE
u'v'
diagram and the lightness was converted to luminance
which made the optimizing computation more precise. The system adopted linear dimming method to avoid safety risk induced by flicker
and the adopted optimization algorithm solved the big color shift problem of linear dimming. The experiment results show that the chromaticity stability of the mixed lighting system can keep within 1-step CIE
u'v'
circle
which means with specific chromaticity setting
there is no perceivable chromatic aberration. The theoretical research and experiment results show that the mixed lighting system is simple
practicable and with high practical value.
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references
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