Patents by Inventor Syumei Tokuyama

Syumei Tokuyama 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: 6628448
    Abstract: An optical spectrum slicer capable of converting and outputting discontinuous spectrum lights having spectral components at a desired wavelength spacing from a broad band continuous spectrum light, with a simple constitution and at a reduced cost, the slider comprising a birefringent device having two polarization axes each orthogonal to an optical axis (z) and linear polarizers disposed at the light incident end and the light emission end thereof, with the direction of polarization being inclined by about 45° relative to each of polarization axes, and a heat generator for controlling the temperature of the birefringent device thereby variably controlling each of wavelengths while maintaining the wavelength spacing of the discontinuous spectrum lights.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: September 30, 2003
    Assignee: Moritex Corporation
    Inventors: Yoshihiro Ohtsuka, Koji Horio, Syumei Tokuyama
  • Publication number: 20020048074
    Abstract: An optical spectrum slicer capable of converting and outputting discontinuous spectrum lights having spectral components at a desired wavelength spacing from a broad band continuous spectrum light, with a simple constitution and at a reduced cost, the slider comprising a birefringent device having two polarization axes each orthogonal to an optical axis (z) and linear polarizers disposed at the light incident end and the light emission end thereof, with the direction of polarization being inclined by about 45° relative to each of polarization axes, and a heat generator for controlling the temperature of the birefringent device thereby variably controlling each of wavelengths while maintaining the wavelength spacing of the discontinuous spectrum lights.
    Type: Application
    Filed: July 16, 2001
    Publication date: April 25, 2002
    Applicant: MORITEX CORPORATION
    Inventors: Yoshihiro Ohtsuka, Koji Horio, Syumei Tokuyama