发明名称 |
Variable-magnification optical system and image-taking apparatus therewith |
摘要 |
A variable-magnification optical system has, from the object side to the image side, at least a first lens group having a positive optical power, a second lens group having a negative optical power, and a third lens group having a positive optical power. The first lens group includes an optical prism that changes the optical path, and a prescribed conditional formula is fulfilled.
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申请公布号 |
US7433584(B2) |
申请公布日期 |
2008.10.07 |
申请号 |
US20050238334 |
申请日期 |
2005.09.29 |
申请人 |
KONICA MINOTA PHOTO IMAGING, INC. |
发明人 |
MASUI ATSUO;MATSUMOTO HIROYUKI;YAMAMOTO YASUSHI |
分类号 |
G03B17/00;G02B9/14;G02B15/14 |
主分类号 |
G03B17/00 |
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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