Optical pickup and optical disc apparatus

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

2006-10-26

2010-06-08

Young, Wayne R (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

Reexamination Certificate

active

07733759

ABSTRACT:
An optical system is disclosed including an optical pickup having a wavefront aberration-correcting element capable of correcting coma aberration and astigmatism, and an optical disc apparatus which uses the optical pickup. The optical pickup includes a laser light source for irradiating an optical disc with a light beam; an objective lens for focusing the light beam on the optical disc; a lens for correcting astigmatism; a second lens for correcting coma aberration; and a photodetector for receiving the light beam reflected from the optical disc. The astigmatism and the coma aberration are corrected independently of each other.

REFERENCES:
patent: 5726436 (1998-03-01), Oka et al.
patent: 6167018 (2000-12-01), Morimoto et al.
patent: 6798581 (2004-09-01), Yamamoto et al.
patent: 2003/0063529 (2003-04-01), Iwata et al.
patent: 2004/0264343 (2004-12-01), Hendriks et al.
patent: 10-083555 (1998-03-01), None
patent: 10-228665 (1998-08-01), None
patent: 2000-040249 (2000-02-01), None
patent: 2002-015435 (2002-01-01), None
patent: 2002-140831 (2002-05-01), None
patent: 2003-317308 (2003-11-01), None
patent: 2004-133168 (2004-04-01), None
State Intellectual Property Office of China (SIPO) office action dated Jan. 4, 2008 for patent application CN2006-101376749.
Japan Patent Office (JPO) office action for JPO patent application JP2005-313689 (Jan. 19, 2010).

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