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12 400044 400044 重庆大学光电技术及系统教育部重点实验室，重庆 ；重庆大学光电工程学院，重庆 摘要 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 457 nm 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。 关键词 微机电系统；光栅光调制器；色度学；彩色；投影 中图分类号 TB133 OCIS 230.4685 330.1720 文献标识码 AAbstract A multi-color projection scheme based on single grating light modulator (GLM) using three-color lasers as light source is proposed. First, the principle of color display is explained. Second, red, green and blue laser composing standard D65 white light source is analyzed by colorimetry theory, considering three important indicators, displaying reduction degree of color, displaying brightness and output power of laser. The laser light source is analyzed and optimized. The result indicates that the combination of the lasers with wavelengths of 635, 532 and 457 nm is the best optimal project. The experiment system is set up, and the color projection experiment based on static grating light modulators is carried out by collecting the ±1st order diffraction light. Red, green, blue and white projection pattern is obtained through the experiment, which preliminarily proves the validity of this color projection scheme.

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