Tilting movement optical pickup actuator and optical...

Details Tilting movement optical pickup actuator and optical... Tilting movement optical pickup actuator and optical...

2007-12-04

2007-12-04

Klimowicz, William J (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

C369S044220

Reexamination Certificate

active

10781656

ABSTRACT:
The optical pickup actuator includes a bobbin in which an objective lens is mounted, and suspension wires each having one end fixed on a side of the bobbin and the other end fixed to a holder disposed on a portion of a base to allow the bobbin to move with respect to the base. A magnetic circuit is installed in the bobbin and the base including a pair of unipolar magnets positioned on the base to face two sides of the bobbin. A focusing coil is wound around the bobbin. A plurality of tilting coils are installed on an upper portion of the bobbin and/or on a lower portion of the bobbin interact with the unipolar magnets to generate an electromagnetic force to control a tilting movement when a central axis of the objective lens is disposed in an upward and a downward direction.

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Notice of Office Action issued by the Korean Patent Office on Jan. 26, 2005 with English translation.

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