| 摘要 |
PROBLEM TO BE SOLVED: To continue focusing on an object at infinity by moving a focusing lens to the infinity by a simple operation. SOLUTION: A focusing lens position sensor 20 for detecting a position of a focusing lens F4 disposed in an inner focusing lens 4 is provided. A focusing motor 13 driven on the basis of an output signal of the focusing lens position sensor 20 is provided. In addition, an infinity switch 22 is provided so as to set the focusing lens F4 at the infinity position. When the focusing motor 13 is being driven, the focusing lens F4 is moved to the infinity position after the infinity switch is depressed. COPYRIGHT: (C)2003,JPO |
