Patents by Inventor Tohru Shigeta

Tohru Shigeta 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).

  • Patent number: 7619684
    Abstract: An optical structure is disposed on a surface of a device substrate, and a lens system for introducing external light into a solid-state image pickup device is placed in the center of the optical structure. The outer shape of the optical structure seen from the light incident side of the lens system is rectangular, and its plane shape forms a rectangular frame section. An intermediate structure is disposed between the device substrate and the optical structure. The intermediate structure has a fitting section for fitting the optical structure in a part of side faces of the frame section.
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: November 17, 2009
    Assignees: Sharp Kabushiki Kaisha, Shicoh Engineering Co., Ltd.
    Inventors: Katsuitsu Nishida, Tohru Shigeta, Hidetoshi Nishimura, Yoshinori Tanida, Naoki Sekiguchi, Morimasa Yoshie
  • Patent number: 7058235
    Abstract: An imaging system of the present invention includes: a reflecting mirror having a geometry of one of two sheets of a two-sheeted hyperboloid; and an imaging section which includes an imaging device for receiving light concentrated by a lens having a center located in any position opposing the reflecting mirror on a rotation axis of the reflecting mirror, wherein the imaging system includes a correction section for performing coordinate transformation on captured image data obtained by capturing an image of a prescribed inspection drawing so as to produce a perspective transformed image data and for correcting distortion in the captured image based on a value regarding a distance between a lens position adapted for the coordinate transformation and a light-receiving surface of the imaging device.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: June 6, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Setsunobu Wakamoto, Kiyoshi Kumata, Tohru Shigeta, Kenichi Kawakami, Kohichi Nakano
  • Publication number: 20050129384
    Abstract: An optical structure is disposed on a surface of a device substrate, and a lens system for introducing external light into a solid-state image pickup device is placed in the center of the optical structure. The outer shape of the optical structure seen from the light incident side of the lens system is rectangular, and its plane shape forms a rectangular frame section. An intermediate structure is disposed between the device substrate and the optical structure. The intermediate structure has a fitting section for fitting the optical structure in a part of side faces of the frame section.
    Type: Application
    Filed: December 6, 2004
    Publication date: June 16, 2005
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Katsuitsu Nishida, Tohru Shigeta, Hidetoshi Nishimura, Yoshinori Tanida
  • Publication number: 20020141636
    Abstract: An imaging system of the present invention includes: a reflecting mirror having a geometry of one of two sheets of a two-sheeted hyperboloid; and an imaging section which includes an imaging device for receiving light concentrated by a lens having a center located in any position opposing the reflecting mirror on a rotation axis of the reflecting mirror, wherein the imaging system includes a correction section for performing coordinate transformation on captured image data obtained by capturing an image of a prescribed inspection drawing so as to produce a perspective transformed image data and for correcting distortion in the captured image based on a value regarding a distance between a lens position adapted for the coordinate transformation and a light-receiving surface of the imaging device.
    Type: Application
    Filed: February 8, 2002
    Publication date: October 3, 2002
    Inventors: Setsunobu Wakamoto, Kiyoshi Kumata, Tohru Shigeta, Kenichi Kawakami, Kohichi Nakano