Invention Grant
- Patent Title: High contrast rear projection screen
- Patent Title (中): 高对比度背投屏
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Application No.: US14303163Application Date: 2014-06-12
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Publication No.: US09176370B1Publication Date: 2015-11-03
- Inventor: Adam E. Norton , Mary Lou Jepsen , Andrei S. Kazmierski , Belle Fu
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Blakely Sokoloff Taylor & Zafman LLP
- Main IPC: G03B21/62
- IPC: G03B21/62 ; G03B21/625 ; G02B5/02 ; G02B3/00

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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