Patent ID: 7016125
Filing Date: 2006-03-21
Classification: G11B

Abstract:
1. An objective lens driving apparatus, comprising: an objective lens that focuses light emitted from a light source on an information-recording medium; a lens-holder that holds said objective lens thereon, said lens-holder having two first holes that extend through the lens-holder in a direction substantially parallel to an optical axis of the objective lens and being movable in such a direction that said objective lens moves in a direction substantially perpendicular to said optical axis of said objective lens, said lens-holder also being movable in a direction of the optical axis of said objective lens; a first magnetic path member having two first opposing walls; a second magnetic path member having two second opposing walls and a first bottom wall that connects the second opposing walls; and a drive mechanism having a magnet and a coil, one of the magnet and coil being fixedly mounted on said lens holder and the other of the magnet and coil being fixedly mounted on one of the first opposing walls, wherein said second magnetic path member is mounted to said first magnetic path member such that the second opposing walls extend through corresponding ones of the two first holes and at least part of turns of the coil are between one of the first opposing walls and one of the second opposing walls.