Optical pickup actuator, optical disc drive using the same,...

Details Optical pickup actuator, optical disc drive using the same,... Optical pickup actuator, optical disc drive using the same,...

2006-06-06

2006-06-06

Heinz, A. J. (Department: 2653)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07058960

ABSTRACT:
An optical pickup actuator including a coil, a first magnet, and a second magnet. The coil is installed in a blade holding an objective lens. The first magnet is positioned inside a cavity formed in the center of the coil. The second magnet is installed outside the cavity to face the first magnet. The outer surface of the first magnet facing the coil is polarized into a first pole and inner surface of the first magnet is polarized into a second pole.

REFERENCES:
patent: 5136565 (1992-08-01), Ooyama et al.
patent: 5265079 (1993-11-01), Getreuer et al.
patent: 5272569 (1993-12-01), White et al.
patent: 5812517 (1998-09-01), Nagasato et al.
patent: 2003/0193854 (2003-10-01), Lee et al.
patent: 0959464 (1999-11-01), None
patent: 1128364 (2001-08-01), None
patent: 10-2001-0026761 (2001-04-01), None
patent: WO 02/054395 (2002-07-01), None
Notice of Office Action issued by the Korean Patent Office on Nov. 11, 2004 for a corresponding Korean application.

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