发明名称 |
Projection optical system, projection type image display apparatus, and image display system |
摘要 |
A projection optical system which can project a bright image with less distortion and a small projection distance without causing aberration or an increase in size of reflective surfaces is disclosed. The projection optical system projects luminous flux from an original image onto a projection surface which is oblique to a central principal ray which is a principal ray of luminous flux traveling from the center of the original image to the center of a projected image. The projection optical system comprises a refractive optical system which includes a plurality of refractive optical elements through which the luminous flux from the original image passes through, and a reflective optical system which includes a plurality of reflective surfaces each having an optical power and guides the luminous flux emerging from the refractive optical system to the projection surface.
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申请公布号 |
US2004027662(A1) |
申请公布日期 |
2004.02.12 |
申请号 |
US20030630483 |
申请日期 |
2003.07.30 |
申请人 |
KURIOKA YOSHIAKI;KUREMATSU KATSUMI;ISHII TAKAYUKI;SUNAGA TOSHIHIRO;CHATANI SAWAKO |
发明人 |
KURIOKA YOSHIAKI;KUREMATSU KATSUMI;ISHII TAKAYUKI;SUNAGA TOSHIHIRO;CHATANI SAWAKO |
分类号 |
G02B5/20;G02B17/06;G02B17/08;(IPC1-7):G03B21/56 |
主分类号 |
G02B5/20 |
代理机构 |
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代理人 |
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地址 |
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