| 摘要 |
<P>PROBLEM TO BE SOLVED: To highly accurately detect a position while suppressing influence of induced magnetism. <P>SOLUTION: A position detecting unit 100 of the invention comprises: a voice coil motor 106 including a magnetic coil 106c for generating driving force by using magnetic force; a lens moving frame 102 driven by the voice coil motor 106; an MR sensor 110 for detecting a position of the lens moving frame 102; and a correcting part (including a detection amplifier 122 and a subtraction part 126) for correcting an output of the MR sensor 110 on the basis of a current flowing through the magnetic coil 106c. <P>COPYRIGHT: (C)2012,JPO&INPIT |
