| 摘要 |
PURPOSE:To make the size of an optical pickup small, by providing a three-dimensional actuator which is incorporated and operated toward focus control, tracking and jitter correction. CONSTITUTION:A coil 24 is fixed to a mirror barrel 20 in a magnetic circuit consisting of a magnet 28 and a yoke 29. When a correction current flows to the coil 24, the mirror barrel 20 including an optical system shakes in a bearing 21 toward the arrow (e) for focus control. In a mirror barrel 21, a magnet 25f magnetized toward the direction (g) and a magnet 25g magnetized toward the direction (f) are fitted with bonding, and coils 26, 27 are provided at fixed side. By flowing a correction current to the coils, they can be displaced toward the arrows (f), (g) respectively against hollow cylindrical rubber 22 fixed at both the sides of the bearing 21 for tracking and jitter correction. |
