Patents by Inventor Kobei Okamoto

Kobei Okamoto 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).

  • Vertical cavity surface emitting laser device
    Patent number: 7769067
    Abstract: A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective mirror layer, and an active layer disposed therebetween, wherein at least one of the first reflective mirror layer and the second reflective mirror layer includes a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction and a part of the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: August 3, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuichiro Hori, Mamoru Uchida, Kobei Okamoto, Yasuhiro Nagatomo
  • VERTICAL CAVITY SURFACE EMITTING LASER DEVICE
    Publication number: 20080298419
    Abstract: A vertical cavity surface emitting laser device includes a first reflective mirror layer, a second reflective mirror layer, and an active layer disposed therebetween, wherein at least one of the first reflective mirror layer and the second reflective mirror layer includes a periodic-refractive-index structure in which the refractive index periodically changes in the in-plane direction and a part of the periodic-refractive-index structure includes a plurality of parts that disorder the periodicity.
    Type: Application
    Filed: August 4, 2008
    Publication date: December 4, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuichiro Hori, Mamoru Uchida, Kobei Okamoto, Yasuhiro Nagatomo, Tatsuro Uchida