Patent ID: 7054236

Claim:
An optical disk drive apparatus comprising: an objective lens which converges a light beam to direct it to an optical disk; an objective lens support portion for supporting said objective lens on a chassis of the optical disk drive apparatus; an elastic support member which movably supports said objective lens on said objective lens support portion; and a coil and a magnet, one of which is provided substantially integral with said objective lens and another of which is mounted on said objective lens support portion independently from said objective lens, said coil and said magnet being capable of moving, by an interaction of the coil and the magnet caused by supplying electric power to the coil, said objective lens against an elastic force of said elastic support member relative to said objective lens support portion so as to vary an angle of incidence of the light beam emitted from said objective lens with respect to an irradiated surface of the optical disk; wherein, as said angle of incidence, at least one of a radial direction tilt angle as a tilt angle of an optical axis with respect to the irradiated surface of the disk as seen from a direction perpendicular to a tracking direction and a tangential direction tilt angle as a tilt angle of the optical axis with respect to the irradiated surface of the disk as seen from the tracking direction, is adjusted only by variation in said angle of incidence caused by the electric power supply to said coil.