发明名称 |
VIEWFINDER OPTICAL SYSTEM |
摘要 |
A compact magnification-varying viewfinder optical system includes an objective lens unit for forming a primary image, the objective lens unit having at least one curved reflection surface arranged to reflect a light flux and a lens surface, and an eyepiece lens unit for observing the primary image, wherein an optical power is imparted to the curved reflection surface.
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申请公布号 |
US2001048552(A1) |
申请公布日期 |
2001.12.06 |
申请号 |
US19950581333 |
申请日期 |
1995.12.29 |
申请人 |
KOYAMA TAKESHI;MURATA YASUNORI |
发明人 |
KOYAMA TAKESHI;MURATA YASUNORI |
分类号 |
G02B15/177;G02B23/14;(IPC1-7):G02B23/00 |
主分类号 |
G02B15/177 |
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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