Optical pickup and optical disc apparatus

Details Optical pickup and optical disc apparatus Optical pickup and optical disc apparatus

2006-03-14

2008-11-04

Thompson, Timothy J (Department: 2873)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C359S726000

Reexamination Certificate

active

07447136

ABSTRACT:
An optical pickup includes a light source for emitting a light beam; an objective lens for condensing the light beam emitted from the light source and irradiating an optical recording medium with the condensed light beam; a collimator lens, disposed between the light source and the objective lens, for forming the light beam emitted from the light source into a parallel light beam and guiding the parallel light beam to the objective lens; and an aberration correcting device, disposed in an optical path connecting the light source and the optical recording medium, for correcting aberration. The aberration correcting device is disposed in an optical path connecting the light source and the collimator lens.

REFERENCES:
patent: 5615200 (1997-03-01), Hoshino et al.
patent: 6665130 (2003-12-01), Kimura
patent: 7206277 (2007-04-01), Ogasawara et al.
patent: 11-110774 (1999-04-01), None
patent: 2000-353333 (2000-12-01), None
patent: 2004-071081 (2004-03-01), None
patent: 2004-164825 (2004-06-01), None
patent: 2005-076265 (2005-08-01), None

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