Tuning the correlated color temperature of white light-emitting diodes resembling Planckian locus

被引：13
|
作者：
He, Ziqian [1 ]
Chen, Haiwei [1 ]
Lee, Yun-Han [1 ]
Wu, Shin-Tson [1 ]
机构：
[1] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA
来源：
OPTICS EXPRESS | 2018年 / 26卷 / 02期
关键词：
CADMIUM SELENIDE NANOCRYSTALS; LIQUID-CRYSTAL; ELECTRIC-FIELD; ILLUMINATION;
D O I：
10.1364/OE.26.00A136
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a new electrically tunable color filter to actively adjust the correlated color temperature of white light-emitting diodes. With four passive cholesteric films and an active polarization rotator, both circular polarizations of the incident light are utilized to generate complementary blue and yellow colors. The blue/yellow ratio can be tuned by the applied voltage of the polarization rotator. In experiment, the tunable color filter offers a reasonably wide tuning range (1900 K and 2400 K), which resembles the Planckian locus. This design is promising for next generation smart lighting. (C) 2018 Optical Society of America
引用
收藏
页码：A136 / A143
页数：8
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