Patents by Inventor Fumitoshi Isobe

Fumitoshi Isobe 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).

  • Surface light source device
    Patent number: 8403550
    Abstract: A surface light source device can be configured to increase front luminance as compared to certain conventional light sources. The surface light source device can include a light guiding plate having a first end surface and a second end surface, a light exiting surface formed to have a light exiting portion and a tapered surface disposed opposite to the light exiting surface. A light source can be disposed along the first end surface of the light guiding plate, and a reflection sheet can be disposed on the tapered surface of the light guiding plate. A prism sheet having a prism surface can face toward the light exiting portion of the light guiding plate. The light exiting portion can be disposed a predetermined entrance length away from the first end surface along the light exiting surface so that the light exiting surface can form a predetermined taper angle with the tapered surface.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: March 26, 2013
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Junji Nakamura, Yoji Oki, Fumitoshi Isobe
  • SURFACE LIGHT SOURCE DEVICE
    Publication number: 20110228557
    Abstract: A surface light source device can be configured to increase front luminance as compared to certain conventional light sources. The surface light source device can include a light guiding plate having a first end surface and a second end surface, a light exiting surface formed to have a light exiting portion and a tapered surface disposed opposite to the light exiting surface. A light source can be disposed along the first end surface of the light guiding plate, and a reflection sheet can be disposed on the tapered surface of the light guiding plate. A prism sheet having a prism surface can face toward the light exiting portion of the light guiding plate. The light exiting portion can be disposed a predetermined entrance length away from the first end surface along the light exiting surface so that the light exiting surface can form a predetermined taper angle with the tapered surface.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 22, 2011
    Inventors: JUNJI NAKAMURA, Yoji Oki, Fumitoshi Isobe