发明名称 |
Objective for a projection apparatus, and corresponding front-projection or backprojection apparatus |
摘要 |
The invention relates to a projection objective comprising at least one lens and intended to transmit a divergent light beam onto a flat screen. A hyperbolically shaped mirror is oriented so as to receive, on its convex face, the light emanating from the lens. The invention also relates to a corresponding projection apparatus.
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申请公布号 |
US2007097507(A1) |
申请公布日期 |
2007.05.03 |
申请号 |
US20040560863 |
申请日期 |
2004.06.04 |
申请人 |
SARAYEDDINE KHALED;SACRE JEAN-JACQUES;BENOIT PASCAL |
发明人 |
SARAYEDDINE KHALED;SACRE JEAN-JACQUES;BENOIT PASCAL |
分类号 |
G02B27/64;G02B17/08;G02B27/18;G03B21/10 |
主分类号 |
G02B27/64 |
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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