| 摘要 |
PROBLEM TO BE SOLVED: To enable fine adjustment by performing power feeding to a focus coil and a tracking coil of a biaxial actuator via a suspension for supporting a lens holder. SOLUTION: Yokes 36f are disposed opposite to each other to hold the focus coil 36d and the tracking coil 36e between them and a magnet 36g fitted inside the yokes are equipped on an optical base 31. When a driving current flows into the tracking coil 36e, a movable part 36c is driven in the tracking direction by interaction of a magnetic field generated on the tracking coil 36e with magnetic flux flowing into the magnet 36g and the yokes 36f. Thus, an objective lens 35 held by the movable part 36c is controlled to be driven in the biaxial direction. |
