Patents by Inventor Yasunori Nisimura

Yasunori Nisimura 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 filter and wavelength monitor device
    Patent number: 7283302
    Abstract: A wavelength filter includes a solid material that is optically transparent and including a pair of planar surfaces substantially parallel to each other; and a supporting member that supports the solid material on a planar surface of the solid material other than the pair of planar surfaces, the supporting member having a rigidity higher than that of the solid material. The solid material is a birefringent material of which an optical axis makes a predetermined angle with respect to a normal to the pair of planar surfaces, and the wavelength filter selects light having a wavelength that is determined by an optical length between the pair of planar surfaces by resonating the light between the pair of planar surfaces.
    Type: Grant
    Filed: March 19, 2003
    Date of Patent: October 16, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Imaki, Yoshihito Hirano, Makoto Sato, Akihiro Adachi, Shinichi Takagi, Yasunori Nisimura
  • Wavelength filter and wavelength monitor device
    Publication number: 20060256437
    Abstract: A wavelength filter includes a solid material that is optically transparent and including a pair of planar surfaces substantially parallel to each other; and a supporting member that supports the solid material on a planar surface of the solid material other than the pair of planar surfaces, the supporting member having a rigidity higher than that of the solid material. The solid material is a birefringent material of which an optical axis makes a predetermined angle with respect to a normal to the pair of planar surfaces, and the wavelength filter selects light having a wavelength that is determined by an optical length between the pair of planar surfaces by resonating the light between the pair of planar surfaces.
    Type: Application
    Filed: March 19, 2003
    Publication date: November 16, 2006
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masao Imaki, Yoshihito Hirano, Makoto Sato, Akihiro Adachi, Shinichi Takagi, Yasunori Nisimura