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Development of Holographic Color Display

全息彩色显示的发展

基本信息

批准号：
17500076
负责人：
SATO Kunihiro
金额：
$ 2.46万
依托单位：
University of Hyogo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

We have developed a time-sharing holographic color display system with a high-resolution reflective LCD panel and with low-power RGB lasers. Reconstructed high-resolution images have large color gamut and exhibit fine color expression. We have also enlarged the viewing zone or the visual field of the holographic display using a multi-channel LCD modulator. The viewing zone angle or the visual field angle of color images is enlarged up to about 20 degrees by adopting a 6-channel LCD modulator. Next, quality deterioration of 3-D images in the holographic display has been discussed. Results of the numerical simulation showed that the nonlinear characteristics of a LCD panel and the phase shift due to the amplitude modulation have significant influences upon the quality of 3-D images reconstructed from the holographic display. New methods were described for improving the quality of reconstructed images in the experiment.A phase-shifting method using the reflective LCD panel has been proposed in order to record RGB holograms simultaneously. Fine complex-amplitude RGB holograms were obtained from recorded in-line holograms by the phase-shifting holography, and high-quality color images of the practical object were numerically reconstructed from the complex-amplitude holograms. We have also developed a new technology of one-shot digital holography for instantaneous recording of the complex-amplitude hologram for color 3-D images. Next, new methods for information reduction in hologram have been proposed to display the 3D image with motion parallax in the wide viewing zone. Observer can perceive motion parallax of the image by viewing a pair of overlapped stereoscopic images with both eyes. The visual depth of the image can be perceived by viewing stereoscopic partial images.

我们开发了一种采用高分辨率反射式液晶面板和低功率RGB激光器的分时全息彩色显示系统。重建的高分辨率图像具有大色域并表现出精细的色彩表现力。我们还使用多通道 LCD 调制器扩大了全息显示器的观看区域或视野。采用6通道LCD调制器，将彩色图像的视区角或视野角扩大到20度左右。接下来，讨论了全息显示器中 3D 图像的质量恶化。数值模拟结果表明，LCD 面板的非线性特性和幅度调制引起的相移对全息显示重建的 3D 图像的质量有显着影响。实验中描述了提高重建图像质量的新方法。提出了一种使用反射式液晶面板的相移方法，以便同时记录RGB全息图。通过相移全息术记录的在线全息图获得了精细的复振幅 RGB 全息图，并根据复振幅全息图对实际物体的高质量彩色图像进行了数值重建。我们还开发了一种一次性数字全息新技术，用于瞬时记录彩色 3D 图像的复杂幅度全息图。接下来，提出了全息图中信息减少的新方法，以在宽视区中显示具有运动视差的3D图像。观察者可以通过用双眼观看一对重叠的立体图像来感知图像的运动视差。图像的视觉深度可以通过观看立体局部图像来感知。