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激光显示技术与传统显示技术相比,具有色域大、颜色饱和度高以及功耗低等优点,已成为下一代显示领域的主要技术。利用激光投影技术和液晶显示技术的特点,设计了一种基于液晶空间光调制器的液晶激光投影显示系统。该系统使用波长为532 nm的激光作为投影光源,采用ARM微处理器对240×320分辨率的液晶空间光调制器进行控制,实现了图像以及文字的投影显示。通过激光束匀光和激光散斑均化,提高了投影显示图像的辐照均匀性,抑制了激光散斑对于投影显示图像的影响。实验结果表明:研究液晶激光投影显示系统对于激光投影技术具有重要的意义。
Compared with the traditional display technology, the laser display technology has the advantages of large color gamut, high color saturation and low power consumption, and has become the main technology in the next generation display field. Using the characteristics of laser projection technology and liquid crystal display technology, a liquid crystal laser projection display system based on liquid crystal spatial light modulator is designed. The system uses a laser wavelength of 532 nm as a projection light source, using an ARM microprocessor to control the liquid crystal spatial light modulator with a resolution of 240 × 320 to realize the projection display of images and texts. The homogeneity of the laser beam and the speckle of the laser spot improve the radiation uniformity of the projection display image and suppress the influence of the laser speckle on the projection display image. The experimental results show that it is of great significance to research the laser projection display system for laser projection technology.