发明名称 |
Interchangeable lens, interchangeable lens system and camera system |
摘要 |
An interchangeable lens is disclosed which prevents the camera body and interchangeable lens from being damaged even if an attempt is made to erroneously mount therebetween. The interchangeable lens is a second interchangeable lens whose flange back is the same as that of a first interchangeable lens and includes a protruding portion protruding from a mount reference surface. The protruding amount of the protruding portion is set when the second interchangeable lens has a specific phase relationship with a first camera, so that the protruding portion contacts a first wall portion of the first camera, and is set when the second interchangeable lens has a phase relationship with the first camera other than the specific phase relationship and a bayonet lug of the second interchangeable lens contacts a bayonet lug of the first camera, so that the protruding portion is away from the first wall portion. <IMAGE> |
申请公布号 |
EP1505433(A1) |
申请公布日期 |
2005.02.09 |
申请号 |
EP20040254618 |
申请日期 |
2004.07.30 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KOYAMA, ATSUSHI;TAMURA, MASAHISA;SUGITA, JUN |
分类号 |
G02B7/02;G02B7/14;G03B17/00;G03B17/14;G03B19/02 |
主分类号 |
G02B7/02 |
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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