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Rear-projection screen for projection video display system, method of rear-projection collimation and projection video display system incorporating the same
Rear-projection screen for projection video display system, method of rear-projection collimation and projection video display system incorporating the same
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机译:用于投影视频显示系统的背投影屏幕,背投影准直方法和包括该背投影准直屏幕的投影视频显示系统
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摘要
Various embodiments of a rear-projection screen, a method of rear-projection collimation and a projection video display (PVD) system. In one embodiment, a rear-projection screen includes: (1) a total-internal-reflection (TIR) fresnel lens configured to aim light received at an incidence angle toward a central axis of the TIR fresnel lens at a convergence angle and (2) a refractive fresnel lens configured to refract the light received from the TIR fresnel lens and at least to reduce the convergence angle.
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