| 摘要 |
PURPOSE:To provide a device which makes a driving means inactive at the end of the moving area of a lens without using a physical detecting means. CONSTITUTION:A logic circuit is constituted so that a motor for driving the lens is forcibly stopped in the case of exceeding the known time which is necessary for the lens to move a section from a closest photographing position to an infinity photographing position by deciding the rotating direction of the motor according to the signal of a device which detects the moving direction of the lens which should be focused and measuring the time of continuously rotating in the decided rotating direction. |
