Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Reexamination Certificate
2004-02-26
2008-10-28
Feild, Joseph (Department: 2627)
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
C369S112080
Reexamination Certificate
active
07443778
ABSTRACT:
It is an object of the present invention to record to and reproduce different types of optical disks using light beams with different wavelengths. In an optical head device for recording to and reproducing high-density optical disks using an objective lens with a large NA, a sawtooth-shaped hologram is used for recording to and reproducing conventional optical disks such as DVDs. For blue light, a sawtooth height is the light path length2λ, and second-order diffraction light is used. Red light generates first-order diffraction. The hologram is blazed and has convex lens function, and corrects chromatic aberration of the refractive lens. A relay lens is disposed between an infrared laser light source and the objective lens, and the light beam that is emitted from the infrared laser light source is substantially converged by the relay lens, and then, as it diverges once again, it is incident on the objective lens, which focuses the light beam into a spot on the recording surface of an optical disk after passing through an approximately 1.2 mm substrate.
REFERENCES:
patent: 5111448 (1992-05-01), Komma et al.
patent: 5289451 (1994-02-01), Ashinuma et al.
patent: 5446565 (1995-08-01), Komma et al.
patent: 5513164 (1996-04-01), Tanaka et al.
patent: 6084843 (2000-07-01), Abe et al.
patent: 6118594 (2000-09-01), Maruyama
patent: 6166854 (2000-12-01), Katsuma
patent: 6201780 (2001-03-01), Katayama
patent: 6285646 (2001-09-01), Yoo et al.
patent: 6442124 (2002-08-01), Chung et al.
patent: 6449095 (2002-09-01), Ohtaki et al.
patent: 6515805 (2003-02-01), Hagimori
patent: 6760295 (2004-07-01), Maruyama
patent: 6834036 (2004-12-01), Shiono et al.
patent: 6898168 (2005-05-01), Kimura et al.
patent: 6928035 (2005-08-01), Komma et al.
patent: 6992967 (2006-01-01), Jeong
patent: 7190650 (2007-03-01), Fujiune et al.
patent: 2001/0000135 (2001-04-01), Mori et al.
patent: 2003/0151996 (2003-08-01), Hendriks et al.
patent: 2003/0227858 (2003-12-01), Komma
patent: 2004/0090901 (2004-05-01), Katayama
patent: 2004/0109242 (2004-06-01), Komma et al.
patent: 2005/0152036 (2005-07-01), Shiono et al.
patent: 2005/0249099 (2005-11-01), Komma
patent: 0 610 055 (1994-08-01), None
patent: 0 731 459 (1996-09-01), None
patent: 0 747 893 (1996-12-01), None
patent: 0 831 466 (1998-03-01), None
patent: 0 936 604 (1999-08-01), None
patent: 1 001 414 (2000-05-01), None
patent: 1 500 956 (2005-01-01), None
patent: 7-98431 (1995-04-01), None
patent: 9-306018 (1997-11-01), None
patent: 10-106016 (1998-04-01), None
patent: 10-334504 (1998-12-01), None
patent: 11-23819 (1999-01-01), None
patent: 11-296890 (1999-10-01), None
patent: 11-339307 (1999-12-01), None
patent: 2000-81566 (2000-03-01), None
patent: 2000-260056 (2000-09-01), None
patent: 2001-6203 (2001-01-01), None
patent: 2001-43559 (2001-02-01), None
patent: 2001-60336 (2001-03-01), None
patent: 2001-93179 (2001-04-01), None
patent: 2001-209966 (2001-08-01), None
patent: 2002-237078 (2002-08-01), None
patent: WO 02/21522 (2002-03-01), None
patent: 02/082437 (2002-10-01), None
patent: WO 03/060891 (2003-07-01), None
European Search Report mailed Sep. 25, 2006 for co-pending EP application 03013076.9.
Nishioka, et al., “BD/DVD/CD Compatible Optical Pick-up Technology”, Extend Abstracts (The 50th Spring Meeting 2003); The Japan Society of Applied Physics and Related Societies, 27 p-ZW-10, Kanagawa University, Mar. 2003 (with partial translation).
Katayama, et al., “Dual Wavelength Optical Head for 0.6mm and 1.2mm Substrate Thickness”, Jpn. J. Appl. Phys., vol. 36 (1997) pp. 460-466.
Ryuichi Katayama, et al., “Blue/DVD/CD Compatible Optical Head with Three Wavelengths and a Wavelength Selective Filter”, ISOM2001, Technical Digest, We-C-05, pp. 30.
N. Kaiho, et al., “DVD/CD Compatibility using Blu-ray Disc Pick Up”, Extended Abstracts (The 63rd Autumn Meeting, 2002); The Japan Society of Applied Physics, No. 3, Sep. 2002, 27p-YD-5, pp. 1008 (with partial translation).
Japanese Office Action for the co-pending JP 2004-366492, mailed Feb. 27, 2007.
Japanese Office Action for the co-pending JP 2003-139347, mailed Feb. 22, 2007.
Feild Joseph
Gupta Parul
Hamre Schumann Mueller & Larson P.C.
Matsushita Electric - Industrial Co., Ltd.
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