| 摘要 |
<p>An objective lens driving apparatus for an optical pickup includes a base (100), a holder (110) provided on the base (100), a blade (120) on which an objective lens (130) is mounted, an elastic support body (140) elastically supporting the blade (120) capable of moving with respect to the holder (110), a pair of magnetic members (150) installed on the base (100) to face each other, and a coil assembly (160) including a focus coil (161), a tracking coil (163), and a tilt coil (162) and installed at the blade (120) so as to be disposed between the magnetic members (150). Thus, since coils needed to change the position of an objective lens (130) are incorporated into a single coil assembly (160) and arranged between a pair of magnets (150), an installation space is small so that the apparatus can be made compact. Also, the control sensitivity can be improved by extending an effective length of a coil by appropriately matching the magnet polarized into two poles and the coil assembly. <IMAGE></p> |
