Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2009-04-10
2010-12-21
Chow, Van N (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112230
Reexamination Certificate
active
07855944
ABSTRACT:
An optical element for use in an optical pickup device to conduct reproducing and/or recording information for a first disk including a protective substrate by the use of a first light flux emitted from a first light source and to conduct reproducing and/or recording information for a second disk including a protective substrate by the use of a second light flux emitted from a first light source, the optical element includes: an optical surface on which a first phase structure is formed to have a function to correct a spherical aberration; an optical surface on which a second phase structure is formed such that when the wavelength of the first light flux changes, the second phase structure generates a spherical aberration in a direction reverse to the direction of a spherical aberration generated by the first phase structure.
REFERENCES:
patent: 6191889 (2001-02-01), Maruyama
patent: 6449095 (2002-09-01), Ohtaki et al.
patent: 6473387 (2002-10-01), Maruyama et al.
patent: 2003/0185134 (2003-10-01), Kimura et al.
patent: 2003/0189886 (2003-10-01), Sakamoto
patent: 2004/0022164 (2004-02-01), Nishioka et al.
patent: 2004/0036972 (2004-02-01), Kimura et al.
patent: 2004/0085662 (2004-05-01), Mimori et al.
patent: 2004/0109242 (2004-06-01), Komma et al.
patent: 2004/0190426 (2004-09-01), Ikenaka
patent: 1 202 259 (2002-05-01), None
patent: 1 313 095 (2003-05-01), None
patent: 1 422 696 (2004-05-01), None
patent: 1 465 170 (2004-10-01), None
patent: 2001-043549 (2001-02-01), None
patent: 2001-060336 (2001-03-01), None
patent: 2001-093179 (2001-04-01), None
patent: 2002-298422 (2002-10-01), None
patent: WO 02/082437 (2002-10-01), None
European Search Report, dated Apr. 17, 2008 for Application No. 07112567.8.
European Search Report (submitted with the IDS filed on Jan. 3, 2007 in parent U.S. Appl. No. 10/973,246).
Chow Van N
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Konica Minolta Opto Inc.
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