发明名称 |
Projection-type display apparatus with a projection optical system configured to reduce speckle |
摘要 |
An image formed on a reflecting optical modulator is magnified by a projection optical system and projected on a backside of a transmission-type screen. The projection optical system is constituted so that a product of an F-number and a projection magnification of the projection optical system is less than 400.
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申请公布号 |
US8403494(B2) |
申请公布日期 |
2013.03.26 |
申请号 |
US20090535246 |
申请日期 |
2009.08.04 |
申请人 |
KOJIMA KUNIKO;TAKEUCHI HAYATO;SASAGAWA TOMOHIRO;NAKANO YUZO;MITSUBISHI ELECTRIC CORPORATION |
发明人 |
KOJIMA KUNIKO;TAKEUCHI HAYATO;SASAGAWA TOMOHIRO;NAKANO YUZO |
分类号 |
G03B21/14;G02B3/08;G02B5/02;G02B13/20;G03B21/28;G03B21/56 |
主分类号 |
G03B21/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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