Patents by Inventor Masahiro Hamaguchi

Masahiro Hamaguchi 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).

  • Phase modulator, phase modulator assembly, and photosensor
    Patent number: 8319958
    Abstract: The present invention provides a photosensor that uses a phase modulation technique for optical detection and conducts a highly accurate measurement. The photosensor uses a phase change difference of light propagated through a polarization preserving fiber with respect to tensile stress and employs proper polarization preserving fibers for a phase modulator 10, light-transmitting polarization preserving fiber 23, and coil-shaped polarization preserving fiber 30, to achieve a highly accurate measurement.
    Type: Grant
    Filed: January 9, 2009
    Date of Patent: November 27, 2012
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Industrial Products Manufacturing Corporation
    Inventors: Kinichi Sasaki, Masao Takahashi, Masahiro Hamaguchi, Takashi Miyabe, Tsuyoshi Kuwabara, Tokihiro Umemura
  • PHASE MODULATOR, PHASE MODULATOR ASSEMBLY, AND PHOTOSENSOR
    Publication number: 20100315621
    Abstract: The present invention provides a photosensor that uses a phase modulation technique for optical detection and conducts a highly accurate measurement. The photosensor uses a phase change difference of light propagated through a polarization preserving fiber with respect to tensile stress and employs proper polarization preserving fibers for a phase modulator 10, light-transmitting polarization preserving fiber 23, and coil-shaped polarization preserving fiber 30, to achieve a highly accurate measurement.
    Type: Application
    Filed: January 9, 2009
    Publication date: December 16, 2010
    Inventors: Kinichi Sasaki, Masao Takahashi, Masahiro Hamaguchi, Takashi Miyabe, Tsuyoshi Kuwabara, Tokihiro Umemura