发明授权
- 专利标题: Image projection system with a polarizing beam splitter
- 专利标题(中): 具有偏振分束器的图像投影系统
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申请号: US10238996申请日: 2002-09-09
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公开(公告)号: US06666556B2公开(公告)日: 2003-12-23
- 发明人: Douglas P. Hansen , Raymond T. Perkins , Eric Gardner
- 申请人: Douglas P. Hansen , Raymond T. Perkins , Eric Gardner
- 主分类号: G03B2114
- IPC分类号: G03B2114
摘要:
An image projection system includes one or more wire grid polarizing beam splitters and one or more transmissive arrays. A polarized light beams from a light source and pre-polarizer is directed towards the transmissive array which modulates the polarization of the polarized light beam by selectively altering the polarization of the polarized light beam to encode image information thereon and creating a modulated beam. The modulated beam is directed towards the wire grid polarizing beam splitter which acts as an analyzer to separate the modulated beam into reflected and transmitted beams. A screen is disposed in one of the reflected or transmitted beams to display the encoded image information. The polarizing beam splitter is oriented at an angle with respect to the modulated beam such that the reflected beam is directed away from the transmissive array. A plurality of transmissive arrays can be used for different colors. One or more polarizing beam splitters can act as both analyzers and combiners.
公开/授权文献
- US20030071973A1 Image projection system with a polarizing beam splitter 公开/授权日:2003-04-17
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