| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an interchangeable lens inhibiting a rapid decrease in a power-supply voltage, conducting stable power supply protection operation, and capable of conducting stable operation even for a high-function lens having a motor for driving the lens and a jiggle correcting unit or the like, and a photographing device. <P>SOLUTION: The interchangeable lens is provided with a microcomputer 110 for controlling a driving control circuit 161 for an AF driving motor and a driving control circuit 162 for a camera shake correcting-motor, and a resetting circuit 150 for resetting the microcomputer 110 when the power-supply voltage decreases below a prescribed voltage. The interchangeable lens is provided with a power-supply voltage detector 120 for detecting the power-supply voltage besides the resetting circuit 150, and a comparator A 141 and a comparator B 142 for comparing output generated from the power-supply voltage detector 120 with a previously determined set value A and a previously determined set value B, respectively. A plurality of low-voltage measuring processes providing priority to the microcomputer 110 is selectively applied in accordance with comparison results obtained from the comparator A 141 and the comparator B 142. <P>COPYRIGHT: (C)2003,JPO |
