Patents by Inventor Etsuzo Kurihara

Etsuzo Kurihara has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Optical pickup lens, molded optical component, handling method, and mold for optical component
    Patent number: 7012767
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a projecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas: 0.5?A?2.0, 0.3A?B?1.7A where A is a diameter (mm) of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width (mm) of the projecting section when the connecting section is viewed from the direction of the optical axis.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: March 14, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Molded optical component, handling method, and assembling method
    Patent number: 6894849
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a connecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas: 0.5?A?2.0, 0.3A?B?1.7A where A is a diameter of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width of the connecting section when the connecting section is viewed from the direction of the optical axis.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: May 17, 2005
    Assignee: Konica Corporation
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Optical pickup lens, molded optical component, handling method, and mold for optical component
    Publication number: 20040223236
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a projecting section integrally provided to the lens section.
    Type: Application
    Filed: February 10, 2004
    Publication date: November 11, 2004
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Optical pickup lens, molded optical component, handling method, and mold for optical component
    Patent number: 6765732
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a connecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas: 0.5≦A≦2.0, 0.3A≦B≦1.7A where A is a diameter of the lens section when the lens section is viewed from an direction of an optical axis, and B is a width of the connecting section when the connecting section is viewed from the direction of the optical axis.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 20, 2004
    Assignee: Konica Corporation
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Optical pickup lens, molded optical component, handling method, and mold for optical component
    Publication number: 20040081060
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a connecting section integrally provided to the lens section.
    Type: Application
    Filed: October 16, 2003
    Publication date: April 29, 2004
    Applicant: Konica Corporation
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Optical pickup lens, molded optical components, handling method, and mold for optical component
    Publication number: 20040080837
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section;.and a connecting section integrally provided to the lens section.
    Type: Application
    Filed: October 16, 2003
    Publication date: April 29, 2004
    Applicant: Konica Corporation
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Optical pickup lens, molded optical component, handling method, and mold for optical component
    Publication number: 20030026007
    Abstract: An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a connecting section integrally provided to the lens section.
    Type: Application
    Filed: July 29, 2002
    Publication date: February 6, 2003
    Applicant: KONICA CORPORATION
    Inventors: Shogo Yamamoto, Hiroyuki Hattori, Etsuzo Kurihara, Shinichiro Saito, Takashi Matsumaru, Taichiro Saito, Kazuo Ishida, Yuichi Atarashi, Norikazu Arai
  • Plastic lens and production method thereof
    Patent number: 6466376
    Abstract: A plastic lens molded through a gate in a molding process has a gate-located portion on an outer peripheral surface of the plastic lens, and a concave surface provided on at least a part of the gate-located portion.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: October 15, 2002
    Assignee: Konica Corporation
    Inventors: Toshiyuki Koshimizu, Kazuo Ishida, Etsuzo Kurihara
  • Optical element and manufacturing method
    Publication number: 20020085283
    Abstract: An optical element molded between a first die and a second die which are jointed along a partition line, comprises a first optical surface on which a diffractive structure is provided; a second optical surface being a refractive surface opposite to the first optical surface; and a flange having a flange surface provided around a periphery of the optical element, a first edge portion of the flange surface adjoining to the first optical surface and a second edge portion of the flange surface adjoining to the second optical surface. The second edge portion is positioned at the partition line between the first die and second die.
    Type: Application
    Filed: December 26, 2001
    Publication date: July 4, 2002
    Applicant: KONICA CORPORATION
    Inventors: Hiroyuki Hattori, Etsuzo Kurihara
  • Plastic lens and production method thereof
    Publication number: 20010007513
    Abstract: A plastic lens molded through a gate in a molding process has a gate-located portion on an outer peripheral surface of the plastic lens, and a concave surface provided on at least a part of the gate-located portion.
    Type: Application
    Filed: December 21, 2000
    Publication date: July 12, 2001
    Applicant: KONICA CORPORATION
    Inventors: Toshiyuki Koshimizu, Kazuo Ishida, Etsuzo Kurihara