中国激光, 2018, 45 (4): 0401004, 网络出版: 2018-04-13   

激光显示光源颜色配比和色温研究 下载: 1389次

Study of Color Proportion and Color Temperature in Laser Display
作者单位
1 中国科学院光电研究院投影光学实验室, 北京 100093
2 中国科学院理化技术研究所应用激光研究中心, 北京100190
摘要
为了实现对激光投影白平衡的实时控制, 根据CIE1931和CIE1964标准色度系统, 对激光红绿蓝三基色组成的激光光源进行了颜色配比和色温研究。首先, 根据格拉斯曼颜色混合定律, 介绍了三基色混合白光色坐标和色温的获得方法。接着, 理论计算了红(638 nm)、绿(532 nm, 520 nm)、蓝(445 nm)激光器在目标色温6500和9300 K下的功率配比, 分析了实现6500~9300 K连续可调对应的功率配比变化; 然后, 对绿光波长变化对色温和亮度的影响以及功率下降引起的色温变化进行了分析。最后, 搭建了激光光源色温测试实验系统, 相比按照标准功率配比计算的理论色温值, 实验获得的色温结果偏低约15%。
Abstract
Color proportion and color temperature in RGB laser display are studied based on CIE1931 and CIE1964 standard colormetric observers to realize the automatic white balance of laser projection. Firstly, the color coordinates and color temperature of white color generated by RGB colors are described based on Grassmann′s laws of color mixture. Secondly, the laser power ratios of red laser (638 nm), green laser (532 nm, 525 nm) and blue laser (445 nm) are calculated at 6500 K and 9300 K, and the change of power ratio is analyzed with continuously adjustable temperature of 6500-9300 K. Then, the influence of green wavelength change on color temperature and luminance, and the change of color temperature caused by power degradation are gained. Finally, an experimental system for measuring color temperature of laser display source is set up, and the experimental result of color temperature is lower about 15% than the theoretical color temperature according to the standard power ratio.

颜博霞, 王延伟, 亓岩, 毕勇. 激光显示光源颜色配比和色温研究[J]. 中国激光, 2018, 45(4): 0401004. Yan Boxia, Wang Yanwei, Qi Yan, Bi Yong. Study of Color Proportion and Color Temperature in Laser Display[J]. Chinese Journal of Lasers, 2018, 45(4): 0401004.

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