Patents by Inventor Hara TOKUTAKA

Hara TOKUTAKA 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).

  • Optical modulation device
    Patent number: 10422956
    Abstract: There is provided an integration-type optical modulation device which performs polarization-beam-combining on two linearly polarized light beams respectively output from a plurality of optical modulation elements and outputs the resultant beam so as to seek an improvement and stabilization of optical characteristics, miniaturization, and low cost.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: September 24, 2019
    Assignee: SUMITOMO OSAKA CEMENT CO., LTD.
    Inventors: Hara Tokutaka, Ryo Shimizu
  • OPTICAL MODULATION DEVICE
    Publication number: 20190113683
    Abstract: There is provided an integration-type optical modulation device which performs polarization-beam-combining on two linearly polarized light beams respectively output from a plurality of optical modulation elements and outputs the resultant beam so as to seek an improvement and stabilization of optical characteristics, miniaturization, and low cost.
    Type: Application
    Filed: March 24, 2017
    Publication date: April 18, 2019
    Inventors: Hara TOKUTAKA, Ryo SHIMIZU
  • OPTICAL MODULATION DEVICE
    Publication number: 20190113684
    Abstract: There is provided an integration-type optical modulation device which performs polarization-beam-combining on two linearly polarized light beams respectively output from a plurality of optical modulation elements and outputs the resultant beam so as to seek an improvement and stabilization of optical characteristics, miniaturization, and low cost.
    Type: Application
    Filed: March 24, 2017
    Publication date: April 18, 2019
    Inventors: Hara TOKUTAKA, Ryo SHIMIZU