Optical pickup apparatus

Details Optical pickup apparatus Optical pickup apparatus

2011-06-07

2011-06-07

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044340, C369S112040, C369S112230, C369S112240

Reexamination Certificate

active

07957234

ABSTRACT:
An optical pickup apparatus comprising: a laser diode; an objective lens configured to focus laser light emitted from the laser diode on a signal recording layer of an optical disc; a first aberration correction element arranged in an optical path between the laser diode and the objective lens; and a second aberration correction element arranged in the optical path between the laser diode and the objective lens and having an aberration correction speed lower than the aberration correction speed of the first aberration correction element, the first aberration correction element and the second aberration correction element being selectively operated according to the required aberration correction speed.

REFERENCES:
patent: 6859429 (2005-02-01), Ogasawara et al.
patent: 7675825 (2010-03-01), Ando
patent: 2002/0172110 (2002-11-01), Tateishi et al.
patent: 2004/0151088 (2004-08-01), Kuze et al.
patent: 2006/0062103 (2006-03-01), Ogiwara et al.
patent: 2007/0147216 (2007-06-01), Hirai
patent: 2009/0022035 (2009-01-01), Li et al.
patent: 2006-147069 (2006-06-01), None

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