US Patent 7365906 Projection screen and projection system containing same
Patent 7365906 was granted and assigned to Dai Nippon Printing on April, 2008 by the United States Patent and Trademark Office.
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A projection screen capable of sharply displaying an image even under bright environmental light with high image visibility. A projection screen has a polarized-light selective reflection layer with a cholesteric liquid crystalline structure, capable of selectively reflecting a specific polarized light component, and a substrate for supporting the reflection layer. Of the light entering the reflection layer from the viewer's side, the right-handed light in the selective reflection wave range is reflected from the reflection layer as reflected light. As a result of structural non-uniformity in the cholesteric liquid crystalline structure, the light that is selectively reflected (reflected light) is diffused.
US Patent 07365906 Projection screen and projection system containing same US Patent 7365906 Projection screen and projection system containing same
US Patent 07365906 Projection screen and projection system containing same
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