Patents by Inventor Kazuhiko Tsubota

Kazuhiko Tsubota 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).

  • Photometric apparatus for microscope
    Patent number: 6505004
    Abstract: A photometric apparatus for a microscope comprises a light-reception element having a plurality of concentrically arranged photometric measurement areas, the light-reception element receiving observation light from the microscope and measuring a brightness of an observation image of the observation light, a calculation circuit for calculating an exposure time necessary for photographing the observation image, on the basis of a photometric measurement value obtained from at least one of the photometric measurement areas of the light-reception element, and a control circuit for performing an exposure operation on the basis of the exposure time calculated by the calculation circuit.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: January 7, 2003
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Jitsunari Kojima, Kazuhiko Tsubota, Keiichi Iizuka, Tetsuo Tatsuda, Ri Sei, Tomohiro Uchida
  • Photometric apparatus for microscope
    Publication number: 20020090218
    Abstract: A photometric apparatus for a microscope comprises a light-reception element having a plurality of concentrically arranged photometric measurement areas, the light-reception element receiving observation light from the microscope and measuring a brightness of an observation image of the observation light, a calculation circuit for calculating an exposure time necessary for photographing the observation image, on the basis of a photometric measurement value obtained from at least one of the photometric measurement areas of the light-reception element, and a control circuit for performing an exposure operation on the basis of the exposure time calculated by the calculation circuit.
    Type: Application
    Filed: February 27, 2002
    Publication date: July 11, 2002
    Applicant: OLYMPUS OPTICAL CO., LTD.
    Inventors: Jitsunari Kojima, Kazuhiko Tsubota, Keiichi Iizuka, Tetsuo Tatsuda
  • Photometric apparatus for microscope
    Patent number: 6385403
    Abstract: A photometric apparatus for a microscope comprises a light-reception element having a plurality of concentrically arranged photometric measurement areas, the light-reception element receiving observation light from the microscope and measuring a brightness of an observation image of the observation light, a calculation circuit for calculating an exposure time necessary for photographing the observation image, on the basis of a photometric measurement value obtained from at least one of the photometric measurement areas of the light-reception element, and a control circuit for performing an exposure operation on the basis of the exposure time calculated by the calculation circuit.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: May 7, 2002
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Jitsunari Kojima, Kazuhiko Tsubota, Keiichi Iizuka, Tetsuo Tatsuda