| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens device capable of maintaining optical performance by restraining the displacement of a movable member relative to an optical axis. SOLUTION: The lens device includes: the movable member 101 capable of moving in an optical axis direction; a first cam member 81 having a first cam 83; and a second cam member 92 having a second cam 96 for driving the movable member and capable of moving in the optical axis direction by the first cam. The ratio of the moving amount of the movable member by the second cam to the moving amount of the movable member by the first cam through the second cam member is different in accordance with the total moving amount of the movable member by the first and the second cams. COPYRIGHT: (C)2007,JPO&INPIT
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