| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress influence of a leakage magnetic flux from a voice coil motor on a magnetic sensor. <P>SOLUTION: The optical element drive device includes: an optical element movable in a first direction P; the voice coil motor for moving the optical element by movement of a coil 104 in the first direction P with respect to a magnet 103 and a yoke 101; and a magnetic sensor 7 for detecting a position of the optical element in the first direction P. The yoke 101 includes a first yoke section 101b having a magnet attracting surface and a second yoke section 101a disposed away from the first yoke section 101b in a second direction so that a space for moving the coil 104 is formed between the second yoke section 101a and the magnet attracted on the magnet attracting surface. In a surface orthogonal to the first direction P, the second yoke section 101a is disposed closer to the magnetic sensor 7 than the first yoke section 101b. When a magnetic path width of the second yoke section 101a is defined as A and a magnet width is defined as C in a third direction, a relation of A>C is established. <P>COPYRIGHT: (C)2013,JPO&INPIT |
