Patents by Inventor Mamoru Ichimura

Mamoru Ichimura 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).

  • Method of aligning optical fiber to optical fiber or optical fiber to optical element at junction and optical fiber array
    Patent number: 5677973
    Abstract: The orientation of the rotating direction of an optical fiber in an optical fiber array takes the positional axial displacement into consideration. In a method of aligning the orientation of optical fibers, or the axial displacement in an optical fiber array having a plurality of optical fibers, and an optical fiber holding member, an enlarged image of the optical fiber is obtained for each of the optical fibers using an image pick-up means. Then, a distribution of the characterized image corresponding to the positions in the radial direction of the image of the optical fiber are obtained from the enlarged image. From the distribution of the characterized image, the orientation of the rotational direction to the center of the optical fiber, or the positional axial displacement of the core center, is measured.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: October 14, 1997
    Assignee: Hitachi Cable Co., Ltd.
    Inventors: Toshiya Yuhara, Hisao Iitsuka, Hiroshi Kajioka, Mamoru Ichimura, Tomohiro Murakami