Optical pickup, optical information recording method, and...

Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium

Reexamination Certificate

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C369S112030, C369S053110

Reexamination Certificate

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08077582

ABSTRACT:
The recording accuracy of information on an optical disc is increased.An information optical system (150) of an optical disc apparatus (110) enables a semiconductor laser (3) to sequentially output specific peak light (LEP) and specific slope light (LES) as an information light beam (LM) and enables the correction lens (162) to change the divergence angle of the specific peak light (LEP) so that an absorption change area (RA) by the specific peak light (LEP) can be positioned at a far position in the recording layer (101). Thus, it is possible to form an energy concentration area (RE) by the specific slope light (LES) in the vicinity of a target position (QG), and the recording accuracy of information on the optical disc (100) can be increased.

REFERENCES:
patent: 5107483 (1992-04-01), Nakajima et al.
patent: 6614820 (2003-09-01), Hirata et al.
patent: 7835409 (2010-11-01), Mizuuchi et al.
patent: 2008/0205244 (2008-08-01), Kitabayashi
patent: 2009/0109816 (2009-04-01), Usui et al.
patent: 2010/0020375 (2010-01-01), Jeong et al.
patent: 10-221075 (1998-08-01), None
patent: 2005-037658 (2005-02-01), None
patent: 2005-209988 (2005-08-01), None
patent: 2006-278926 (2006-10-01), None
patent: 2007-133925 (2007-05-01), None
patent: 2007-522594 (2007-08-01), None
patent: 2008-071433 (2008-03-01), None
patent: 2008-176902 (2008-07-01), None
Toriumi, A. et al., “Reflection confocal microscope readout system for three-dimensional photochromic optical data storage”, Optics LETTERS/vol. 23, No. 24/Dec. 15, 1988, pp. 1924-1926.

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