Patent ID: 7280442

Claim:
A slim-type optical pick-up actuator comprising: a lens holder having an object lens for condensing a light on an optical disc, mounted at one side thereof, wherein the lens holder is configured to move in focusing and tracking directions; a base having a plurality of first support members, each having a magnet attached thereto, wherein the magnets face each other and each magnet extends in the tracking direction from a first end of the corresponding magnet through a central portion to a second end of the corresponding magnet; and a driving member having a focusing coil and first and second tracking coils directly attached to the focusing coil in series in the tracking direction in an order of the first tracking coil, the focusing coil and the second tracking coil, the first tracking coil being a different coil than the second tracking coil, a mass center position of the lens holder being substantially coincident with a force center position of the driving member; wherein the focusing coil is installed to face the central portion of each of the magnets, the first tracking coil is installed to face the first end of each of the magnets and the second tracking coil is installed to face the second end of each of the magnets; wherein the lens holder comprises a second support member extending therefrom configured to support the driving member between the magnets, and wherein the driving member activates the lens holder by an electromagnetic force with the magnets in focusing and tracking directions.