Patent ID: 8102752
Filing Date: 2012-01-24
Classification: G11B

Abstract:
1. An optical head for irradiating an information storage medium with laser light from the laser diode to perform recording/reproduction of information comprising a laser holder retaining a laser diode, and a holder support retaining the laser holder, wherein the laser holder is a frame structure that fixes the laser diode, having an abutment portion protruding from a base side of the frame structure, the holder support has a receiving surface that supports by abutment the abutment portion, and a through-hole that lets pass the laser light, and the receiving surface is a plane approximately perpendicular to an optical axis of the optical head, the abutment portion being an arc surface having a central axis, which passes through an emission point of the laser diode and is perpendicular to the optical axis such that when rotating the laser holder to make an angular adjustment and simultaneously moving the laser holder along the receiving surface for a locational adjustment, the emission point is maintained along the optical axis.