Invention Grant
US09176370B1 High contrast rear projection screen 有权
高对比度背投屏

High contrast rear projection screen
Abstract:
A projection screen includes a transparent substrate having a first side and a second side, an array of lenses disposed along the first side of the transparent substrate, a dark film disposed across the second side of the transparent substrate, an array of holes disposed through the dark film, and an array of diffusing spots each aligned with a corresponding one of the array of holes.
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