发明公开
EP1211901A2 Aperture element for a video projector and a video projector using the aperture element
审中-公开
光圈，以在视频投影机和视频投影仪的使用提供了这个元素，
- 专利标题： Aperture element for a video projector and a video projector using the aperture element
- 专利标题（中）： 光圈，以在视频投影机和视频投影仪的使用提供了这个元素，
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申请号： EP01309053.5申请日： 2001-10-25
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公开(公告)号： EP1211901A2公开(公告)日： 2002-06-05
- 发明人: Makita, Kazuya, c/o NEC Vieuwtechnology, Ltd.
- 申请人： NEC Viewtechnology, Ltd.
- 申请人地址： 37-8, Shiba 5-chome Minato-ku Tokyo 108-0014 JP
- 专利权人： NEC Viewtechnology, Ltd.
- 当前专利权人： NEC Viewtechnology, Ltd.
- 当前专利权人地址： 37-8, Shiba 5-chome Minato-ku Tokyo 108-0014 JP
- 代理机构： Orchard, Oliver John
- 优先权： JP2000326279 20001026
- 主分类号： H04N9/31
- IPC分类号： H04N9/31
摘要：
A reflecting portion is formed on a periphery of an opening portion 20 of an aperture element for a video projector. The reflecting portion 21 reflects a portion of the illumination light illuminating a reflecting type display element, which is other than a necessary portion, for expanding and projecting an image information by a projecting lens to an area outside an incident area of the projecting lens, such that the light portion is not incident on the projecting lens.
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