| 摘要 |
PROBLEM TO BE SOLVED: To stably operate an end face cam and easily detect non-operation. SOLUTION: A pulse motor 4, which is a drive motor serving as a driving means, is disposed below a gear unit 5 used for transmitting the power of the pulse motor 4. The end face cam 6 also serving as a transmitting means has a cam inclined face 6a formed in the range of 180°from a thick portion to a thin portion. A projection 6c is formed integrally so as to protrude from the periphery of the end face cam 6 opposite to the cam inclined face 6a with respect to a rotation axis. The position and size of the projection 6c are set so that the position of the gravity of the end face cam 6 is aligned with the axial center. A cam follower 3a fixed to a side of the lens barrel 3 is pressed by a spring, not shown, and presses the cam inclined face 6a of the end face cam 6. COPYRIGHT: (C)2008,JPO&INPIT
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