Patent ID: 7317675
Filing Date: 2008-01-08
Classification: G11B

Abstract:
1. A method of manufacturing an optical head comprising an integrated unit in which a light source and a photodetector are combined into one component, an objective lens actuator for maintaining an objective lens as a means of focusing light onto a disk information recording medium and actuating the objective lens in a focus direction and a radial direction of the disk information recording medium, and an optical bench for maintaining the integrated unit and the objective lens actuator, the objective lens actuator comprising the objective lens, an objective lens holder for maintaining the objective lens, a suspension for maintaining the objective lens holder, a base for supporting the suspension, a coil fixed to the objective lens holder, and a yoke fixed to the base, the objective lens holder being actuated in the focus direction and the radial direction by energizing the coil, the method comprising: fixing the integrated unit to the optical bench to set an optical axis of the light source and the photodetector; and then subsequent to fixing the integrated unit, moving the objective lens actuator integrally with the base with respect to the optical bench or the integrated unit in a plane approximately orthogonal to an axis of light entering the objective lens so that a desired detection signal can be obtained through reflected light from the disk information recording medium; and then subsequent to moving the objective lens actuator, bonding and fixing the base to the optical bench.