| 摘要 |
PURPOSE:To make a titled device light in weight and inexpensive by executing the focusing and variable power by the same motor. CONSTITUTION:When a distance to be focused is infinite, in case a near object is photographed, this distance is measured by a distance measuring sensor 27, it is detected by a circuit 28 that it is different from a focused distance, a solenoid 45 is electrified by a circuit 29, and also a circuit 31 rotates a motor 24 in the direction as indicated with an arrow 59. In this case, the solenoid 45 is attracted, therefore, a focus ring 22 is turned clockwise. Also, when a focusing lens is focused to a near distance, and an object is distant, a solenoid 46 is attracted, a pulley 43 abuts on the ring 22, also the motor 24 also rotates, and the ring 22 turns counterclockwise. Subsequently, when a zoom operating lever 50a is depressed, a projecting part 50b depresses a zoom switch 58, it is detected by a circuit 30, the motor 24 is rotates, also a pulley 56 abuts on a zoom ring 25, the ring 25 turns clockwise by following a rotation of the motor 24, and a variable power lens moves. In tis way, the focusing and variable power are executed by the same motor, and the stable operation can be executed. |
