Patents by Inventor Uuichi Handa

Uuichi Handa 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).

  • Integrated type optical node and optical information system using the same
    Patent number: 5287422
    Abstract: This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: February 15, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Uuichi Handa, Hidetoshi Nojiri, Hajime Sakata
  • Integrated type optical node and optical information system using the same
    Patent number: 5222163
    Abstract: This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: June 22, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Uuichi Handa, Hidetoshi Nojiri, Hajime Sakata
  • Integrated type optical node and optical information system using the same
    Patent number: 5109444
    Abstract: This specification discloses an integrated type optical node comprising a substrate, a channel light waveguide formed on the substrate for connecting the transmission lines of an optical information system, an amplifying portion provided on the light waveguide for amplifying a light propagated through the waveguide, and a light branching-off portion provided on the light waveguide for coupling a light transmitter and/or a light receiver to the transmission lines. The specification also discloses an optical information system using such optical node.
    Type: Grant
    Filed: June 25, 1991
    Date of Patent: April 28, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Uuichi Handa, Hidetoshi Nojiri, Hajime Sakata
  • Waveguide optical system
    Patent number: 4832428
    Abstract: In a waveguide optical system having a light waveguide, a light coupler for receiving and directing a light beam propagated through the light waveguide to a condensing lens for condensing the light beam emerging from the light coupler into the form of a spot, the coupling length of the light coupler is set so that the shape of the spot is substantially circular, whereby the waveguide optical system is made suitable for use with a high-density recording optical head or the like.
    Type: Grant
    Filed: October 15, 1987
    Date of Patent: May 23, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mamoru Miyawaki, Uuichi Handa