发明名称 |
Linear guiding mechanism of a zoom lens barrel |
摘要 |
Disclosed is a linear guiding mechanism of a zoom lens barrel which includes: a first cylindrical member provided on an inner periphery thereof with at least one linear guide groove which extends parallel to an optical axis, a code sheet for detecting a focal length being fixed to an outer periphery of the first cylindrical member; and a second cylindrical member provided on an outer surface thereof with at least one guide projection which is fitted in the at least one linear guide groove, respectively, wherein at least part of the code sheet and at least part of the at least one linear guide groove are located at the same position in a circumferential direction of the code sheet, and wherein each of the at least one linear guide groove includes a raised portion which is radially raised from the base of the linear guide groove towards the optical axis.
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申请公布号 |
US5956189(A) |
申请公布日期 |
1999.09.21 |
申请号 |
US19980176965 |
申请日期 |
1998.10.22 |
申请人 |
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
AZEGAMI, KAZUYOSHI;SASAKI, TAKAMITSU;ISHIZUKA, KAZUNORI |
分类号 |
G02B7/04;G02B7/10;(IPC1-7):G02B7/02;G02B15/14 |
主分类号 |
G02B7/04 |
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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