摘要
大视角的真彩色显示是全息显示的重要目标。提出一种使用白光发光二极管(LED)作为再现光源,通过旋转反射镜实现大视角彩色全息显示的方法。通过空分的方法,使每个颜色分量的全息图加载到空间光调制器(SLM)的三分之一区域。白光LED经过滤光片照射到空间光调制器上,通过调整红绿蓝(RGB)三色分量原图的大小实现再现像的完全重合。当加载不同视角的全息图时,再现像经过旋转反射镜呈在不同的位置。保证全息图的切换速度与反射镜的转动速度一致,当切换速度足够快时,通过人眼的暂留效应可看到大视角的全息再现像。实验结果验证了所提出方法的可行性。
Wide-viewing-angle color display is an important goal of holographic display. A method to achieve wide-viewing-angle color holographic display using white light illumination and a rotating mirror is proposed. By using spatial multiplexing method, each color component hologram is loaded on one third area of the spatial light modulator （SLM）. White light LED illuminates the SLM after a filter, and complete over lapping of reconstructed image can be realized by adjusting the original size of three color components. When holograms are loaded on SLM with different viewing angles, reconstructed image is reflected in different locations by rotating mirror. The switching speed of the holograms should be the same with rotation speed of mirror. When the switching speed is fast enough, the wide-viewing-angle holographic reconstruction can be seen according to the persistence of vision effect. The experimental result verifies the feasibility of the proposed theory.
出处
《激光与光电子学进展》
CSCD
北大核心
2015年第6期103-107,共5页
Laser & Optoelectronics Progress
基金
国家863计划(2012AA011901)
四川省青年科技创新研究团队专项计划项目(13CXTD0003)
关键词
全息
彩色全息显示
旋转反射镜
空间光调制器
holography
color holographic display
rotating mirror
spatial light modulator
