Optical pickup apparatus

Details Optical pickup apparatus Optical pickup apparatus

2011-03-01

2011-03-01

Edun, Muhammad N (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044280, C369S044140, C369S112230, C369S112240

Reexamination Certificate

active

07898910

ABSTRACT:
An optical pickup apparatus comprising: a first objective lens; and a second objective lens arranged with the first objective lens in a radial direction of an optical disc, the first objective lens being configured to focus laser light for reproduction, which is laser light for reproducing a signal recorded in a signal recording layer of the optical disc, onto the signal recording layer, the second objective lens being configured to focus laser light for recording, which is laser light for recording a signal, onto the signal recording layer.

REFERENCES:
patent: 7543312 (2009-06-01), Kim et al.
patent: 2009/0290476 (2009-11-01), Okada
patent: 2004-272949 (2004-09-01), None
patent: 2006-019001 (2006-01-01), None
patent: 2006-172605 (2006-06-01), None

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