Object lens driving device and optical head having the same

Details Object lens driving device and optical head having the same Object lens driving device and optical head having the same

2005-07-05

2005-07-05

Cao, Allen (Department: 2652)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

C369S244100

Reexamination Certificate

active

06915526

ABSTRACT:
An object lens driving device comprises a movable unit which supports an object lens and is movably supported by a fixed unit, a first mechanism which has a first magnet affixed to a fixed unit and a first coil affixed to a movable unit, and drives the movable unit in a predetermined direction by supplying electricity to the first coil, and a second mechanism which has a second coil affixed to a fixed unit and a second magnet affixed to a movable unit, and drives the movable unit in a direction different from that of the first mechanism by supplying electricity to the second coil, wherein the first and second magnets are arranged so that their polarities have the same orientation.

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Toshiba Review, http://www.toshiba.co.jp/tech/review/, Jul. 2002, No. 7, cover sheet and pp. 32-34.
Office Action from the Patent Office of the People's Republic of China, dated Sep. 17, 2004.

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