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提出一种利用三色激光作为照明光源时,基于单片光栅光调制器(GLM)的彩色投影显示方案。阐述了该投影系统的彩色显示原理利用色度学相关理论;分析了红、绿、蓝三色激光合成标准D65白光源的原理;综合考虑显示色彩还原度、投影亮度和激光器输出功率3个重要指标,对激光光源进行了优化选择。分析结果表明,峰值波长分别为635,532及457nm的三色激光器组合为光源的最优设计方案。搭建了相关实验系统,通过收集±1级衍射光进行了静态光栅光调制器彩色投影实验。实验得到了红、绿、蓝及合成白色光源照明下的投影图案,初步证明了该彩色投影方案的正确性。
A color projection display scheme based on monolithic Grating Light Modulator (GLM) is proposed when using three-color laser as illumination source. The theory of color display of the projection system is described using the theory of colorimetry. The principle of synthesizing the standard D65 white light source with red, green and blue laser light is analyzed. Three important factors such as color reproduction degree, projection brightness and laser output power are considered Indicators, the laser light source has been optimized choice. The analysis results show that the optimal design scheme of the light source is the combination of three-color laser with peak wavelength of 635, 532 and 457nm respectively. The related experiment system was set up, and the color projection experiment of static grating light modulator was carried out by collecting ± 1 order diffracted light. The projection patterns under the illumination of red, green, blue and synthetic white light sources were obtained experimentally, and the correctness of the color projection scheme was initially proved.