发明名称 |
Zoom optical system with a prescribed conjugate distance |
摘要 |
A zoom optical system has a focus adjusting unit that performs focusing for an object by moving along an optical axis thereof and a magnification adjusting unit that corrects a change in optical magnification caused by the focusing by moving along an optical axis thereof.
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申请公布号 |
US6781767(B2) |
申请公布日期 |
2004.08.24 |
申请号 |
US20010957168 |
申请日期 |
2001.09.19 |
申请人 |
MINOLTA CO., LTD. |
发明人 |
HASHIMURA JUNJI;KINOSHITA MASAYA;HAMADA KENJI |
分类号 |
G02B15/16;G02B15/163;(IPC1-7):G02B15/22 |
主分类号 |
G02B15/16 |
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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