平面三维显示技术的研究现状

平面三维显示技术是近年来最新出现的虚拟现实显示技术，其最大的特点是观察者无需使用任何辅助附加设备，直接用肉眼就可看到屏幕上显示的三维图像。为推进三维显示技术的发展，进一步研究了视差立体成像原理，并据此介绍几种平面三维显示方法及其工作原理，包括障栅立体显示、微柱透镜阵列立体显示、偏振片立体显示和基于微柱透镜立体显示原理的多视点系统，阐述并分析了系统的优缺点。以日本三洋公司的四视角立体显示装置、南京大学的多视点三维显示系统和NEC液晶科技的HDDP三维显示系统为例，描述了国内外该项技术近期的研究现状，分析了存在的技术难点，展望了该应用领域的发展前景。

Research status quo of flat 3D display technology

The flat 3D display technology is a novel virtual reality technology, in which people can see 3D stereoscopic images from a screen directly and do not require any device to be worn. To promote the development of the flat 3D display technology, this paper introduces the imaging principle of parallax pictures and some flat 3D display methods including barrier 3D displays, micro lens 3D displays, polarizer 3D displays, multi view lenticular stereoscopic displays and so on. Then, it analyzes on the advantages and disadvantages about these methods. By taking the four view autostereoscopic displays from Sanyo in Japan, multi view 3D displays from Nanjing University and the Horizontally Double density Pixels(HDDPs) 3D displays in NEC for examples, it introduces the recent research and potential development, describes technique problems, and forecasts the application prospects for the flat 3D display technology.