| 摘要 |
PROBLEM TO BE SOLVED: To provide a floating lens device moving a plurality of lens groups by different amounts, that can be miniaturized in the optical axis direction. SOLUTION: The lens device 10 includes: a fixed lens barrel 60; lens frames 62b and 62c respectively holding the plurality of focus lens groups FLb and FLc having a movement pattern different from each other; cam pins 90b and 90c arranged respectively in the lens frames 62b and 62c; a cam cylinder 64 freely rotatably supported, having cam grooves 66b and 66c engaged respectively with the cam pins 90b and 90c. The lens frame 62c is disposed inside the lens frame 62b and combined with the lens frame 62b in a nested manner, and the cam pins 90b and 90c are disposed at a position different from each other in a circumferential direction and at nearly the same position in the optical axis direction. COPYRIGHT: (C)2008,JPO&INPIT
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