发明名称 |
Cam ring of lens barrel and method for manufacturing same |
摘要 |
A cam ring of a substantially annular shape for a lens barrel including at least one cam groove in which a guide pin provided on a lens group which is movable in an optical axis direction is placed and a gear which is provided on an outer periphery of the cam ring to rotate the cam ring, wherein at least a part of the cam groove is in the form of an inner cam groove with a closed bottom located on the outer surface thereof. The gear is integrally formed on the outer surface of the cam ring. The invention is also directed to a method for manufacturing such a cam ring.
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申请公布号 |
US5255124(A) |
申请公布日期 |
1993.10.19 |
申请号 |
US19920865764 |
申请日期 |
1992.04.10 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
IWAMURA, MAKOTA |
分类号 |
G02B7/10;(IPC1-7):G02B15/14 |
主分类号 |
G02B7/10 |
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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