一种改进的全视差全息体视图打印方法

An Improved Printing Method of Full-Parallax Holographic Stereogram

全息体视图显示技术是三维全息显示技术的研究热点之一,如何改进打印方法是全息体视图显示技术的关键问题。介绍了两步转移全息图法、激光直写打印水平视差全息体视图法和基于全息单元的全视差全息体视图打印法,并分析了这几种打印方法的原理和不足。通过体视图与全息单元的对应关系,设计了一种影响因素少、操作简单的打印方法以减小图像失真。总结了全息体视图的发展动态,指出随着全息记录材料和空间光调制技术的不断发展,它会朝着大尺寸、大视角、实时动态、更高分辨率的方向发展。

Holographic stereogram display technology is one of the research focuses on holographic three-dimensional chs play. How to improve the printing method has become a key point in holographic stereogram display. In this paper, several methods are summarized firstly, including two-steps transfer hologram printing technique, horizontal parallax only （HPO） stereogram with laser direct writing and the method based on holographic elements. Also the principles of printing, method of recording, and the various factors that affect the printing quality of the holographic stereogram are analyzed in details. Af ter designing the matching relationship between holographic stereogram and holographic elements, a new method is pro- posed. With this method, the image distortions can be decreased because this method has less impact factors and easier oper- ations in experiment. Finally, the recent development state of holographic stereogram is summarized. It points out that holo- graphic stereogram will develop towards large size, large angle of view, real-time, dynamic, and much higher resolution with the development of holographic recording materials and spatial light modulation techniques.