Patent ID: 7668049
Filing Date: 2010-02-23
Classification: G11B

Abstract:
1. An optical pickup actuator comprising: a bobbin comprising at least one objective lens mounted thereon for allowing light to be incident onto an optical information storage medium; a movable support member for supporting the bobbin; and a magnetic circuit for driving the bobbin independently in focusing and tilt directions; wherein the bobbin comprises plural lens mounting holes arranged in the track direction of the optical information storage medium, whereby the bobbin is arranged to accommodate plural objective lenses; wherein the magnetic circuit comprises: a pair of focusing coils adjacent to each other in the bobbin; a tilt coil comprising working sides corresponding to working sides of the focusing coils, respectively; and at least one magnet section for generating a driving force in the focusing direction by cooperating with the focusing coils, and a driving force in the tilt direction by cooperating with the tilt coil.