| 摘要 |
An actuator of an optical pickup head for accessing data on a disk includes an object-lens holder, a magnetic field generator and a coil device. The object-lens holder carries an object lens. The magnetic field generator generates a first magnetic field perpendicular to a surface of the disk and a second magnetic field parallel to the surface of the disk. The coil device is horizontally disposed at one side of the object-lens holder. The coil device includes a tracking coil and focusing coil. The tracking coil receives a first current and generates a first force for moving the object-lens holder along a tracking direction according to the first magnetic field. The focusing coil receives a second current and generates a second force for moving the object-lens holder along a focusing direction according to the second magnetic field. The focusing coil and tracking coil are disposed at the same level.
|
