发明名称 |
Optical system, display optical system and image-taking optical system |
摘要 |
An optical system is disclosed with which higher magnification can be easily achieved and aberrations can be favorably corrected, yet is compact. The optical system includes a plurality of optical surfaces including a first surface which has at least a reflective action, a second surface reflecting the light rays reflected by the first surface back toward the first surface, and a diffractive optical surface. The first surface reflects a central field-angle principal ray, which comes from the second surface and is again incident on the first surface, to the opposite side of the previous reflection with respect to a normal at a hit point of the central field-angle principal ray on the first surface.
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申请公布号 |
US2004184152(A1) |
申请公布日期 |
2004.09.23 |
申请号 |
US20040767490 |
申请日期 |
2004.01.28 |
申请人 |
MATSUNAGA MOTOMI;YAMAZAKI SHOICHI;INOGUCHI KAZUTAKA |
发明人 |
MATSUNAGA MOTOMI;YAMAZAKI SHOICHI;INOGUCHI KAZUTAKA |
分类号 |
G02B17/08;G02B25/00;G02B27/00;G02B27/01;G02B27/02;H04N5/64;(IPC1-7):G02B27/64 |
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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