为在激光显示中实现白场色温的实时控制,根据CIE1931和CIE1964标准色度系统计算了激光显示三基色光源(R 638 nm,G 520/532 nm,B 450 nm)形成5500~7500 K色温的混合白光时的光功率配比,探讨了三基色光源的光功率比例、中心波长以及光谱宽度对混合白光色温、色品坐标和光通量的影响。设计了基于AS73211颜色传感器的实时光反馈色温控制系统,并在模拟激光显示装置中于5500~7500 K范围内实现了误差小于±50 K的色温控制精度。

This study aims to realize the real-time control of the white light color temperature in a laser display system. For this purpose, first, we calculated the optical power ratio of an RGB laser (R: 638 nm; G: 520/532 nm; and B: 450 nm) when mixing white light of color temperature 5500--7500 K according to CIE1931 and CIE1964 standard colorimetric observers. Subsequently, we analyzed the effects of the light power proportion, center wavelength, and spectrum width on the color temperature, chromatic coordinates, and luminous flux of the mixed white light. Finally, we realized a real-time optical feedback and control system based on the AS73211 color sensor and achieved a color temperature control error of less than ±50 K in the 5500--7500 K range.