Patents by Inventor Kohtaro Handa

Kohtaro 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).

  • Surface emitting semiconductor laser array and optical transmission system using the same
    Patent number: 7386025
    Abstract: A surface emitting semiconductor laser array includes multiple light-emitting portions arranged in a one-dimensional or two-dimensional array, each of the light-emitting portions including, on a substrate, an active region and a current funneling portion between first and second reflection mirrors, and a light-emission aperture above the second reflection mirror, laser beams being simultaneously emitted from the multiple light-emitting portions. At least one of the multiple light-emitting portions has a near field pattern different from those of other light-emitting portions.
    Type: Grant
    Filed: October 31, 2005
    Date of Patent: June 10, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Seiya Omori, Akira Sakamoto, Yasuaki Miyamoto, Masahiro Yoshikawa, Kohtaro Handa
  • Surface emitting semiconductor laser array and optical transmission system using the same
    Publication number: 20060227836
    Abstract: A surface emitting semiconductor laser array includes multiple light-emitting portions arranged in a one-dimensional or two-dimensional array, each of the light-emitting portions including, on a substrate, an active region and a current funneling portion between first and second reflection mirrors, and a light-emission aperture above the second reflection mirror, laser beams being simultaneously emitted from the multiple light-emitting portions. At least one of the multiple light-emitting portions has a near field pattern different from those of other light-emitting portions.
    Type: Application
    Filed: October 31, 2005
    Publication date: October 12, 2006
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Seiya Omori, Akira Sakamoto, Yasuaki Miyamoto, Masahiro Yoshikawa, Kohtaro Handa