发明名称 |
Projection display system |
摘要 |
A projection display system comprising a projection display unit including a light source, an image display element, a lighting optical system irradiating a beam of light on the image display element, and a projection optical system projecting an image light from the image display element toward a screen. The projection optical system including a lens group composed of a plurality of lens elements arranged in order toward the screen from the image display element and symmetrically with respect to an optical axis, and a reflecting mirror shaped to be axial-asymmetrical with respect to the optical axis. The projection display system further comprises a screen 5. The projection display unit projects the image light onto a projection plane of the screen to display an image. |
申请公布号 |
EP2309301(A1) |
申请公布日期 |
2011.04.13 |
申请号 |
EP20100008617 |
申请日期 |
2007.10.10 |
申请人 |
HITACHI, LTD. |
发明人 |
HIRATA, KOJI;YATSU, MASAHIKO;HISADA, TAKANORI;OHKI, MASAYUKI |
分类号 |
G02B17/08;G03B21/10;H04N5/74 |
主分类号 |
G02B17/08 |
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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