| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel where a roller member for a cam follower is prevented from being broken, deformed and falling off a cam groove when an external force is applied on the lens barrel, and capable of always securing a smooth operation. SOLUTION: The lens barrel is provided with a 1st frame member 13 having the cam groove 13a, and a 2nd frame member 11 having the cam follower 11c constituted of a 1st roller part 16 whose inside diameter is engaged with the cam follower shaft 11g and whose outside diameter is engaged with the cam groove, and also, a 2nd roller part (large diameter part) whose inside diameter is engaged with the cam follower shaft and whose outside diameter is engaged with the cam groove in the same way as that of the 1st roller part. COPYRIGHT: (C)2005,JPO&NCIPI
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