发明名称 |
Vorrichtung zur Beleuchtung mit polarisiertem Licht und Projektor, der diese Vorrichtung verwendet |
摘要 |
<p>A polarization illumination apparatus is constituted by only a light source, light condensing means having a reflection mirror arranged behind the light source, polarization beam splitting means for splitting light emerging from the light condensing means into first and second polarized light components having different directions of polarization, and return means for returning the first polarized light component to the light condensing means. The direction of polarization of the first polarized light component is changed in such a manner that the first polarized light component from the return means is obliquely incident on and reflected by a mirror surface of the reflection mirror. Therefore, a polarization illumination apparatus which can modulate the vibration direction of polarized light without using an optical phase plate, and has high light utilization efficiency, and a projector using the apparatus can be realized. <IMAGE></p> |
申请公布号 |
DE69312747(T2) |
申请公布日期 |
1998.01.15 |
申请号 |
DE1993612747T |
申请日期 |
1993.01.20 |
申请人 |
CANON K.K., TOKIO/TOKYO, JP |
发明人 |
KIMURA, KAZUMI, C/O CANON KABUSHIKI KAISHA, TOKYO 146, JP |
分类号 |
G02B5/30;G02B27/28;G02F1/1335;G02F1/13357;G03B21/14;H04N9/31;(IPC1-7):G02B27/28;G02F1/133 |
主分类号 |
G02B5/30 |
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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