Patent ID: 7464389
Filing Date: 2008-12-09
Classification: G11B

Abstract:
1. An optical recording and/or reproducing apparatus for use with transferring information with respect to a recording medium, comprising: a spindle motor rotating the recording medium; an optical pickup including an objective lens and an actuator which actuates the objective lens so as to transfer the information with respect to the recording medium; and a control unit driving the spindle motor and optical pickup to transfer the information with respect to the recording medium and controlling the actuator of the optical pickup in the radial, track, tilt and focusing directions, wherein the optical actuator comprises: a base; a bobbin movably disposed on the base, the bobbin having a first pair of opposite sides and a second pair of opposite sides; supporting units movably coupling the bobbin to the base; a holder disposed on the base and connected to one end of the supporting unit; and a magnetic driver having focus coils driving the bobbin in a focus direction, track coils driving the bobbin in a track direction, tilt coils driving the bobbin in a tilt direction, and magnets installed to face the focus coils, the track coils, and the tilt coils; wherein the focus coils, the track coils and the tilt coils are disposed on only one of the first and second pairs of the opposite sides of the bobbin and the focus coils and the tilt coils are arranged so as not to overlap the track coils.