Patents by Inventor Masahito Kon

Masahito Kon 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).

  • Displacement measuring apparatus
    Patent number: 7808650
    Abstract: Disclosed is a displacement measuring apparatus that includes a composite scale having a magnetic pattern and a diffraction grating each aligned in a direction of measuring axis, and a detector head moving in a direction of measuring axis relative to the composite scale. The detector head has a magnetic detection unit detecting a magnetic field exerted by the magnetic pattern to generate first reproduced signals, a light source irradiating the diffraction grating with light, and an optical detection unit detecting the light diffracted by the diffraction grating to generate second reproduced signals. In composite scale, the magnetic pattern and the diffraction grating are arranged such that a pitch of the first reproduced signals is larger than that of the second reproduced signals.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: October 5, 2010
    Assignee: Mori Seiki Co., Ltd.
    Inventors: Masahito Kon, Kayoko Taniguchi, Hideaki Tamiya, Yasuhiko Onodera, Hideki Tsuchiya, Akihiro Kuroda
  • DISPLACEMENT MEASURING APPARATUS
    Publication number: 20090033946
    Abstract: Disclosed is a displacement measuring apparatus that includes a composite scale having a magnetic pattern and a diffraction grating each aligned in a direction of measuring axis, and a detector head moving in a direction of measuring axis relative to the composite scale. The detector head has a magnetic detection unit detecting a magnetic field exerted by the magnetic pattern to generate first reproduced signals, a light source irradiating the diffraction grating with light, and an optical detection unit detecting the light diffracted by the diffraction grating to generate second reproduced signals. In composite scale, the magnetic pattern and the diffraction grating are arranged such that a pitch of the first reproduced signals is larger than that of the second reproduced signals.
    Type: Application
    Filed: July 23, 2008
    Publication date: February 5, 2009
    Applicant: SONY CORPORATION
    Inventors: Masahito Kon, Kayoko Taniguchi, Hideaki Tamiya, Yasuhiko Onodera, Hideki Tsuchiya, Akihiro Kuroda