Optical pick-up

Details Optical pick-up Optical pick-up

2007-01-29

2010-10-05

Cao, Allen T (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07810111

ABSTRACT:
An optical pickup that can incline an objective lens in the same direction as that of a bend of an optical disc is provided.The optical pickup includes a lens holder that holds an objective lens, focusing coils attached to the lens holder, a yoke to which magnets are attached, and inner yokes disposed opposite to the magnets via the focusing coils, and the optical pickup is structured so that a cross-sectional area of the inner yoke disposed toward the outer periphery of the optical disc is greater than a cross-sectional area of the inner yoke disposed on the inner periphery of the optical disc.

REFERENCES:
patent: 7313799 (2007-12-01), Kimura et al.
patent: 2004/0123309 (2004-06-01), Cheong et al.
patent: 2006/0083121 (2006-04-01), Kimura et al.
patent: 2006/0218569 (2006-09-01), Jang et al.
patent: 2007/0140075 (2007-06-01), Kimura et al.
patent: 2001-093178 (2001-04-01), None
patent: 2001-319353 (2001-11-01), None
patent: 2002-197700 (2002-07-01), None
patent: 2004-87106 (2004-03-01), None
patent: 2005-050414 (2005-02-01), None

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