| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve a drive device capable of stably driving a lens barrel without adjusting the position of an oscillation body to the lens barrel. <P>SOLUTION: This drive device includes an elastic member 2 which oscillates in an arc form and a drive source which oscillates the elastic member 2. The elastic member 2 has a friction member 3 which can be brought into contact with a driven body, and the friction member 3 moves in an arc form trace to drive the lens barrel 4 in accordance with the arc form oscillation of the elastic member 2. When curvature radius of the arc form friction member 3 is taken as r and radius of the arc form trace of a contact part is taken as driving radius D, the curvature radius r and the driving radius D satisfy the condition of 0.5≤r/D≤1.5, therefore, it is possible to stably drive the lens barrel 4 even when the elastic member 2 is mounted to be slant to the lens barrel 4. <P>COPYRIGHT: (C)2009,JPO&INPIT |
