Patents by Inventor Hideaki Yuri

Hideaki Yuri 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).

  • Optical isolator
    Patent number: 5315431
    Abstract: A non-reciprocal unit and a parallel-surfaced flat birefringent plate are provided between incident side and outgoing side fiber collimators. The non-reciprocal unit is formed by disposing two tapered birefrigent plates, one on each side of a 45.degree. Faraday rotator consisting of a cylindrical permanent magnet and a magneto-optical element housed in the magnet. The optical axes of the parallel-surfaced flat birefringent plate and adjacent tapered birefringent plate are staggered from each other by 90.degree.. The thickness of the parallel-surfaces birefringent plate is set equal to the sum of the thicknesses of the two tapered birefringent plates.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: May 24, 1994
    Assignee: Fuji Electrochemical Co., Ltd.
    Inventors: Akihiro Masuda, Ikuo Maeda, Hideaki Yuri, Yoichi Suzuki