Retroreflective screens and their application to autostereoscopic displays

被引:14
作者
Harman, P
机构
来源
STEREOSCOPIC DISPLAYS AND VIRTUAL REALITY SYSTEMS IV | 1997年 / 3012卷
关键词
autostereoscopic; stereoscopic; 3D; retroreflective; screen; multiviewer; multiple images; eye tracking; 3D theatres;
D O I
10.1117/12.274451
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
An Autostereoscopic display is described that enables a viewer, or viewers, to view 3D TV or computer graphics images without the need to wear special glasses or other head-wear. The display is based upon a retroreflective screen which provides the display with a number of unique features. One of these features is the capability to produce a large screen (greater than 80 '' diagonal) multiviewer autostereoscopic display whereby each viewer can see the same or a completely different image. Each image can occupy the entire screen without crosstalk between multiple images occurring. Retroreflective material has the characteristic that light incident on it is returned to the viewer along exactly the same path as the incident light. This is in contrast to reflections from other surfaces where in general the angle of incident is equal to the angle of reflection. Incident light returned from a retroreflective screen can be structured such that scatter or other disturbances can be minimised. This results in a very narrow viewing angle over which the incident image can be observed. Since the majority of the light incident on the screen is returned to the originating source the screen can be considered to have a ''gain'' when compared with a similar configuration where the light is incident on a conventional projection screen.
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页码:145 / 153
页数:9
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