自由立体显示器视差照明原理的仿真研究

Simulation research on the principle of parallax illumination in the auto-stereoscopic display

视差照明是实现自由立体显示重要方法之一,其基本原理就是用一块特殊的照明板——光栅板取代液晶显示器的照明系统,实现对普通液晶屏的照明。文章阐述了视差照明自由立体显示方式的原理,通过仿真建模,得到了对应特定立体显示系统结构尺寸(像素尺寸、照明板线栅距、照明线发光宽度、像素平面与照明板之间的距离等结构参数)与立体视觉参数(两瞳孔之间的距离、立体视带与显示屏之间的距离、人眼前后左右可移动范围等)之间的关系。仿真结果已投入使用,效果良好。

Parallax illumination is one of the important techniques to realize auto-stereoscopic display. Its basic principle is to realize stereoscopic display by means of an especial illumination plate,i, e. the grating plate, to illumine the Liquid-Crystal Display （LCD） screen. The principle of parallax illumination in the auto-stereoscopic display is expatiated in this paper. Based on the optic principle of the parallax illumination, a model of a special 3D display system is built by using the imitative technique. Then the correlation between the system configuration parameters, such as dimension of pixels, the dimension between two bright lines in the grating plate and the distance between the grating plate and the LDC screen, and the stereo-vision parameters, such as observer＇s pupil distance, the distance between the observer＇s face and the LDC screen and the movable range of the observer＇s poll, has been obtained, from the model. The simulation results have been put into application in the 3D display,and the stereoscopic effect is marvelous.