摘要
彩色全息显示是全息视频显示技术发展的重要目标。概述了基于空间光调制器实现彩色全息显示的方法与系统构建问题。首先,介绍了彩色全息显示中三个单色全息像叠加生成彩色全息再现像的基本原理。分析了全息图生成的方法,比较了光全息图、数字全息图、计算机生成全息图的不同。其次,讨论了彩色全息显示系统构建时空间光调制器的选择以及多波长照明下的相位调制特性问题。在实际系统中,红、绿、蓝三色激光或者发光二极管都可以用作系统照明光源。然后,描述了基于时分复用、空间复用、空间划分、空间叠加方法构建的彩色全息显示系统架构,指出彩色全息重构结果受到空间光调制器像素结构和色差等问题的影响。最后,展望了彩色全息显示技术的发展方向。
Abstract Color holographic display is an important aim of holographic video display technology. In this paper, an overview of the issues about the methods and system design of color holographic display based on spatial light modulator （SLM） is presented. Firstly, the basic principles that three monochromatic holographic images are combined into a color image are introduced. The methods of generating holograms are analyzed and the comparison of three kinds of holograms including optical holograms, digital holograms, and computer- generated holograms （CGHs） is achieved. Secondly, the choice of SLM to design a color holographic display system and the phase modulation characteristics for multi-wavelength illumination are discussed. It is feasible to employ either red, green, and blue （RGB） lasers or light-emitting diodes （LEDs） as illumination source in practice system. Then, the configurations of color holographic display system by use of different methods including time division multiplexing, space division multiplexing, spatial division, and spatial multiplexing are described, and it is pointed out that the color holographic reconstructions are corrupted by effects arising from the discrete nature of SLM and the chromatics. Finally, the prospective development of color holographic display technology is given.
出处
《激光与光电子学进展》
CSCD
北大核心
2014年第3期33-45,共13页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61377006
61301296
61201396)
国家自然科学基金-广东联合基金(U1201255)
教育部博士学科点专项科研基金(20113401130001)
关键词
全息术
彩色全息显示
计算机生成全息图
空间光调制器
holography
color holographic display
computer-generated hologram
spatial light modulator
