| 摘要 |
PROBLEM TO BE SOLVED: To mount and demount a member on and from a lens barrel without spoiling the operations of an operation member that is provided to a cylindrical part at the outer periphery of the lens barrel and to prevent the mounted member from unexpectedly falling. SOLUTION: A bayonet coupling part 56 and a bayonet lock member 61 are provided on a subject side of the operation member 63 of the cylindrical part at the outer periphery of the lens barrel, and a bayonet lock operation member 60 is provided on a camera body side of the operation member. The bayonet lock operation member and bayonet lock member are coupled by a bayonet coupling member 59. The bayonet lock operation member is operated to release the members 67 and 68 from locking by the bayonet lock member. COPYRIGHT: (C)2005,JPO&NCIPI
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