| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively detect a lens position. <P>SOLUTION: A lens position is detected by detecting light from a photodiode 10 changing corresponding to a lens position, using a phototransistor 12. A control unit 60 divides a moving range of a lens into a plurality of areas, approximates a relation between a lens position and electric current of the phototransistor for each area, corrects the electric current of the phototransistor by using the relation obtained by approximation to obtain corrected detection current having a relation between the lens position and a line shape, and detects the lens position by using the obtained corrected detection current. <P>COPYRIGHT: (C)2013,JPO&INPIT |
