APPARATUS FOR DISPLAY SYSTEMS
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United States of America Patent
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Mar 14, 2014
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Mar 15, 2013
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Abstract
Apparatus for use in display systems are disclosed. In certain implementations, a display apparatus includes a light guide plate for use in a liquid crystal display backlight system. In other implementations, an apparatus for use in a projection display is disclosed including a substantially transparent rectangular prism. In implementations including laser-based light sources, the light guide plate or substantially transparent rectangular prism is configured to reduce the spatial coherence of laser light introduced thereto, thereby reducing speckle. The light guide or prism includes a plurality of light scattering particles suspended therein; alternatively the light guide or prism has a set of scratches on a surface thereof, rending the surface substantially opaque.
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