| 摘要 |
PURPOSE:To provide a lens driving device which can stop a cam corresponding to the position of a lens group at the prescribed stage with simple control in any conditions. CONSTITUTION:This device is provided with an AF cam 10 which is abutted to a cam follower 6g of a movable frame 6 linked with a mirror frame in which the photographic lens group is attached and has plural step parts corresponding to different plural positions in the direction of the optical axis of a photographic lens group, and a driving means including a control means by a photo-interrupter and the like which decides a position in the direction of the optical axis of the mirror frame by moving the AF cam and selecting step parts in the AF cam 10 to which the movable frame 6 is abutted, and the device is formed so that width along the direction of movement of the AF cam 10 in plural step parts is widened as transferring from step parts to which the movable frame 6 of the cam follower 6g in the initial condition of movement of the AF cam to step parts to which the cam follower 6g is abutted in the final condition. |
