Patent ID: 7724616

Claim:
An optical recording and/or reproducing apparatus, comprising: an optical pickup actuator comprising a holder formed on a base, a blade comprising an objective lens and connected to the holder with a plurality of elastic supporters so that a posture of the blade can be changed to a predetermined tilt according to a variation in a height of the blade, a pair of focus coils for operating the blade in a focus direction, track coils for operating the blade in a tracking direction, and corresponding magnets; a memory to store at least one of a lookup table relating the height of the blade to an electric current supplied to at least one of the focus coils, a lookup table relating a tilt of the blade to at least the electric current supplied to the at least one focus coil, and a lookup table relating an actual tilt of an optical disk of the optical recording/reproducing apparatus to the height of the blade; and a controller to control electric current supplied to the at least one focus coil based on a calculated tilt difference between an expected tilt of the blade and a detected tilt of the optical disk, the expected tilt of the blade being based on an expected tilt for an electric current supplied for a desired focal blade height corresponding to a determined height relative to the optical disk to record and/or reproduce to/from the optical disk, with the controller controlling the electric current by adjusting the electric current based on a lookup table stored in the memory to compensate for the calculated tilt difference.