Patent ID: 6925036
Filing Date: 2005-08-02
Classification: G11B

Abstract:
1. An optical pickup apparatus comprising: a carriage body; an optical parts accommodation module mounted on said carriage body and accommodating at least (i) a light beam emitting portion for emitting a light beam, (ii) a light beam receiving portion, (iii) a beam splitter and (iv) a grating for generating a sub beam for a tracking adjustment out of the light beam emitted from said light beam emitting portion; and a grating adjustment mechanism for rotating said optical parts accommodation module, said optical parts accommodation module being mounted on said carriage body in such a condition that said optical parts accommodation module is allowed to rotate with an axis line of the light beam, which is irradiated toward a disc, as a rotational center, said grating adjustment mechanism having a cam plane abutting an adjacent plane formed at a portion apart from the axis line and including a slide cam member mounted in such a condition that said slide cam member is regulated to be movable on a straight line with respect to said carriage body.