| 摘要 |
PURPOSE:To solve the insufficiency of torques in the case of moving a lens even if feeding quantity becomes large by providing a lens moving means for moving a photographing lens to a position corresponding to the stopping position of a moving member in an optical axis direction. CONSTITUTION:The driving system of a control plate 64 which is located corresponding to a distance measuring signal detected by an autofocusing device is separated from the driving system of the photographing lens which controls the movement of the photographing lens by traveling the moving member to the position specified by the control plate 64, and a first driving means consisting of a stepping motor 66 which can execute precise driving and the control of stopping is used for the driving system of the control plate 64. A set motor 30 which is a second driving means different from the first driving means is used for the driving system of the photographing lens. Thus the adverse effect such as the irregular rotation of the stepping motor caused by the increase of loads by the movement of the photographing lens and the difficulty in driving the photographing lens caused by the insufficiency of the torques, etc., when the feeding quantity of the photographing lens becomes large can be solved. |
