Patents by Inventor Mikio Arashima

Mikio Arashima 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: 6986765
    Abstract: An ophthalmic surgery apparatus for observing an anterior portion of an eye, and an optical system for laser beam treatment to the eye. The apparatus has a moving device for moving the optical system relative to the eye, an illuminating device for illuminating an area of the anterior portion of the eye, a photoelectric transducing device having a two-dimensional light sensing plane for sensing distribution of light volume of the anterior portion of the eye, a pupil position sensing device for sensing the position of a pupil, and a control device for controlling the moving device based on sensed results.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: January 17, 2006
    Assignee: Nidek Co., Ltd.
    Inventors: Toshifumi Sumiya, Mikio Arashima, Hidenori Kanda
  • Patent number: 6491687
    Abstract: An ophthalmic surgery apparatus comprising a system for observing an anterior portion of an eye, and an optical system for irradiating a laser beam for treatment to the eye, the apparatus is a corneal surgery apparatus irradiating the laser beam to a cornea and ablating a surface thereof, the apparatus comprising a moving device for moving the optical system relatively against the eye, an illuminating device for illuminating a large area of the anterior portion of the eye, a photoelectric transducing device having a two-dimensional light sensing plane, for sensing distribution of light volume of the anterior portion of the eye, a pupil position sensing device for sensing the position of a pupil, a control device for controlling the moving device based on sensed results, a tracking signal generating device for generating a signal to track movement of the eye, whereby the moving device is controlled by the control device so as to track movement of the eye by inputting a signal generated by the tracking signal g
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: December 10, 2002
    Assignee: Nidek Co., Ltd.
    Inventors: Toshifumi Sumiya, Mikio Arashima, Hidenori Kanda
  • Publication number: 20020165526
    Abstract: An ophthalmic surgery apparatus comprising a system for observing an anterior portion of an eye, and an optical system for irradiating a laser beam for treatment to the eye, the apparatus is a corneal surgery apparatus irradiating the laser beam to a cornea and ablating a surface thereof, the apparatus comprising a moving device for moving the optical system relatively against the eye, an illuminating device for illuminating a large area of the anterior portion of the eye, a photoelectric transducing device having a two-dimensional light sensing plane, for sensing distribution of light volume of the anterior portion of the eye, a pupil position sensing device for sensing the position of a pupil, a control device for controlling the moving device based on sensed results, a tracking signal generating device for generating a signal to track movement of the eye, whereby the moving device is controlled by the control device so as to track movement of the eye by inputting a signal generated by the tracking signal g
    Type: Application
    Filed: June 19, 2002
    Publication date: November 7, 2002
    Applicant: NIDEK CO., LTD
    Inventors: Toshifumi Sumiya, Mikio Arashima, Hidenori Kanda
  • Patent number: 6159202
    Abstract: An ophthalmic surgery apparatus comprising a system for observing an anterior portion of an eye, and an optical system for irradiating a laser beam for treatment to the eye, the apparatus is a corneal surgery apparatus irradiating the laser beam to a cornea and ablating a surface thereof, the apparatus comprising a moving device for moving the optical system relatively against the eye, an illuminating device for illuminating a large area of the anterior portion of the eye, a photoelectric transducing device having a two-dimensional light sensing plane, for sensing distribution of light volume of the anterior portion of the eye, a pupil position sensing device for sensing the position of a pupil, a control device for controlling the moving device based on sensed results, a tracking signal generating device for generating a signal to track movement of the eye, whereby the moving device is controlled by the control device so as to track movement of the eye by inputting a signal generated by the tracking signal g
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 12, 2000
    Assignee: Nidex Co., Ltd.
    Inventors: Toshifumi Sumiya, Mikio Arashima, Hidenori Kanda
  • Patent number: 6030376
    Abstract: An ophthalmic operating apparatus comprising an observation optical system for observing an anterior part of patient's eye, a laser beam irradiating optical system for irradiating a laser beam for treatment on the patient's eye, a moving device for moving the laser beam irradiating optical system relatively with respect to the patient's eye, an illumination optical system for projecting an illumination light from a pupil of the patient's eye so that the anterior part being illuminated by a reflected light at a fundus of the patient's eye from a rear side, and a photographic element for photographing a retro-illumination image of the anterior part illuminated by the illumination optical system.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: February 29, 2000
    Assignee: Nidek Co., Ltd.
    Inventors: Mikio Arashima, Toshifumi Sumiya, Hirohiko Hanai