Patents by Inventor Tsuyoshi Hashiguchi

Tsuyoshi Hashiguchi 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).

  • MULTIBEAM DEFLECTOR FOR SEPARATING BEAMS OUTPUT FROM OPTICAL DEFLECTION DEVICES
    Publication number: 20110063705
    Abstract: A multibeam deflector includes a plurality of optical deflection devices formed on a single substrate and an output optical system. Each of the optical deflection devices includes a slab optical waveguide formed by a material having an electro-optic effect. The output optical system is configured to separate beams output from the optical deflection devices from each other.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 17, 2011
    Inventors: Kazuhiko TSUKAMOTO, Shuichi Suzuki, Tsuyoshi Hashiguchi, Atsushi Sakai, Koichiro Nakamura
  • OPTICAL ELEMENT, REFRACTIVE INDEX SENSOR, REFRACTIVE INDEX SENSOR ARRAY, AND BIOSENSOR
    Publication number: 20100014073
    Abstract: An optical element for resonating and reflecting incident light having a wavelength includes a periodic structure formed of protrusions and recessions. A period of the periodic structure is equal to or less than the wavelength of the incident light. The incident light having the wavelength is resonated and reflected by a resonance caused between the incident light and the protrusions and recessions. Widths of the protrusions are spatially changed.
    Type: Application
    Filed: July 9, 2009
    Publication date: January 21, 2010
    Inventors: Tsuyoshi Hashiguchi, Hideaki Hirai
  • Optical switching element, optical switching device, and color image displaying apparatus
    Patent number: 7492990
    Abstract: An optical switching element includes a resonant reflection element and a driving unit. The resonant reflection element has a thickness portion functioning as a waveguide layer, with one surface in a thickness direction functioning as a total reflection surface and the other surface having formed thereon a fine periodic structure with fine asperities, the resonant reflection element resonant-reflecting light that is incident from the other surface and has a specific wavelength component. The driving unit varies a resonant wavelength of resonant reflection by varying at least one of a shape and a refractive index of the resonant reflection element.
    Type: Grant
    Filed: December 4, 2006
    Date of Patent: February 17, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Hashiguchi, Hideaki Hirai
  • Optical switching element, optical switching device, and color image displaying apparatus
    Publication number: 20070127111
    Abstract: An optical switching element includes a resonant reflection element and a driving unit. The resonant reflection element has a thickness portion functioning as a waveguide layer, with one surface in a thickness direction functioning as a total reflection surface and the other surface having formed thereon a fine periodic structure with fine asperities, the resonant reflection element resonant-reflecting light that is incident from the other surface and has a specific wavelength component. The driving unit varies a resonant wavelength of resonant refection by varying at least one of a shape and a refractive index of the resonant reflection element.
    Type: Application
    Filed: December 4, 2006
    Publication date: June 7, 2007
    Inventors: Tsuyoshi Hashiguchi, Hideaki Hirai