Patents by Inventor Kazuyuki Nakasendou

Kazuyuki Nakasendou 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).

  • Wavelength division element and optical module
    Patent number: 7215885
    Abstract: A wavelength division element includes a first filter and a second filter. The first filter has incident angle-to-transmission wavelength characteristics and separates multiplexed lights in a plurality of wavelength bands into first lights that are in a first wavelength band and first reflected lights. The first filter allows the first lights to pass through in a first direction and reflects the first reflected lights in a second direction. The second filter is located in the second direction and separates the first reflected lights into second lights that are in a second wavelength band and second reflected lights. The second filter allows the second lights to pass through in a third direction and reflects the second reflected lights in a fourth direction.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: May 8, 2007
    Assignees: Fujitsu Limited, Epson Toyocom Corporation
    Inventors: Takashi Yamane, Toshiya Kishida, Satoshi Monma, Kazuyuki Nakasendou, Daiki Furusato
  • Wavelength division element and optical module
    Publication number: 20050117201
    Abstract: A wavelength division element includes a first filter and a second filter. The first filter has incident angle-to-transmission wavelength characteristics and separates multiplexed lights in a plurality of wavelength bands into first lights that are in a first wavelength band and first reflected lights. The first filter allows the first lights to pass through in a first direction and reflects the first reflected lights in a second direction. The second filter is located in the second direction and separates the first reflected lights into second lights that are in a second wavelength band and second reflected lights. The second filter allows the second lights to pass through in a third direction and reflects the second reflected lights in a fourth direction.
    Type: Application
    Filed: July 26, 2004
    Publication date: June 2, 2005
    Applicants: FUJITSU LIMITED, TOYO COMMUNICATION EQUIPMENT CO., LTD.
    Inventors: Takashi Yamane, Toshiya Kishida, Satoshi Monma, Kazuyuki Nakasendou, Daiki Furusato