Patents by Inventor Yutato Okuno

Yutato Okuno 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).

  • Prism sheet for surface light source
    Patent number: 5851062
    Abstract: A periodic pattern is formed on a surface of prism sheet, and the cross section of a minimal unit 14 of the periodic pattern is shaped like an M. The M-shape includes a long positive-sloping surface, a short negative-sloping surface, a short positive-sloping surface and a long negative-sloping surface 16b. By designing the prism sheet in such a manner, a portion of the light behaving in a side mode is converted to recurrent mode light, and the surface luminance is enhanced.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: December 22, 1998
    Assignee: Omron Corporation
    Inventors: Masayuki Shinohara, Yutato Okuno, Shigeru Aoyama