Patents by Inventor Shunsuke Okuyama

Shunsuke Okuyama 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).

  • SEMICONDUCTOR LASER MODULE
    Publication number: 20150146757
    Abstract: A semiconductor laser module includes: a semiconductor laser outputting a laser light from an output-facet side of a waveguide which has a first narrow portion identical in width, a wide portion wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion between the first narrow portion and the wide portion and increasing in width toward the wide portion, and a second tapered portion between the wide portion and the second narrow portion and decreasing in width toward the second narrow portion; and an optical fiber to which the laser light is input has an optical-feedback unit reflecting a predetermined wavelength of light. The semiconductor laser is enclosed in a package with one end of the optical fiber. The optical-feedback unit has a first optical-feedback unit set at a predetermined reflection center wavelength determining an oscillation wavelength and a second optical-feedback unit.
    Type: Application
    Filed: February 5, 2015
    Publication date: May 28, 2015
    Inventors: Yutaka OHKI, Satoshi ARAKAWA, Shunsuke OKUYAMA, Masaki FUNABASHI, Junji YOSHIDA, Hidehiro TANIGUCHI
  • SEMICONDUCTOR LASER WITH VARIED-WIDTH WAVEGUIDE AND SEMICONDUCTOR LASER MODULE INCLUDING THE SAME
    Publication number: 20140314113
    Abstract: A semiconductor laser outputs a laser light from an output facet of a waveguide having an index waveguide structure, via a lens system. The waveguide includes, in order from a rear facet opposite to the output facet, a first narrow portion, a wide portion that is wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion formed between the first narrow portion and the wide portion, which expands toward the wide portion, and a second tapered portion formed between the wide portion and the second narrow portion, which narrows toward the second narrow portion. Each of the first narrow portion, the wide portion, and the second narrow portion has a uniform width.
    Type: Application
    Filed: July 2, 2014
    Publication date: October 23, 2014
    Inventors: Yutaka OHKI, Satoshi ARAKAWA, Shunsuke OKUYAMA, Masaki FUNABASHI, Junji YOSHIDA, Hidehiro TANIGUCHI
  • Semiconductor laser with varied-width waveguide and semiconductor laser module including the same
    Patent number: 8811447
    Abstract: A semiconductor laser outputs a laser light from an output facet of a waveguide having an index waveguide structure, via a lens system. The waveguide includes, in order from a rear facet opposite to the output facet, a first narrow portion, a wide portion that is wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion formed between the first narrow portion and the wide portion, which expands toward the wide portion, and a second tapered portion formed between the wide portion and the second narrow portion, which narrows toward the second narrow portion. Each of the first narrow portion, the wide portion, and the second narrow potion has a uniform width.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: August 19, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Yutaka Ohki, Satoshi Arakawa, Shunsuke Okuyama, Masaki Funabashi
  • SEMICONDUCTOR LASER AND SEMICONDUCTOR LASER MODULE
    Publication number: 20110206082
    Abstract: A semiconductor laser outputs a laser light from an output facet of a waveguide having an index waveguide structure, via a lens system. The waveguide includes, in order from a rear facet opposite to the output facet, a first narrow portion, a wide portion that is wider than the first narrow portion, a second narrow portion narrower than the wide portion, a first tapered portion formed between the first narrow portion and the wide portion, which expands toward the wide portion, and a second tapered portion formed between the wide portion and the second narrow portion, which narrows toward the second narrow portion. Each of the first narrow portion, the wide portion, and the second narrow potion has a uniform width.
    Type: Application
    Filed: February 18, 2011
    Publication date: August 25, 2011
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yutaka OHKI, Satoshi ARAKAWA, Shunsuke OKUYAMA, Masaki FUNABASHI
  • Laminated film
    Publication number: 20040234889
    Abstract: The present invention provides a laminated film having a release layer on one surface of a polyester film, having a light transmittance of 80% or over at 365 nm wavelength and useful for dry film photoresist use enabling easy production and handling and especially useful for the production of a printed circuit board.
    Type: Application
    Filed: October 9, 2003
    Publication date: November 25, 2004
    Inventors: Shunsuke Okuyama, Hikaru Takeuchi