Patents by Inventor Takanori Oboshi

Takanori Oboshi 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).

  • Lens sheet and producing method therefor
    Patent number: 6650481
    Abstract: A lens sheet of the present invention comprises: a lens layer having a plurality of unit lenses, each of which is adapted to fully reflect a part of an incident light beam on a fully reflecting portion so as to emit it from a light emitting portion, arranged in a one- or two-dimensional direction on a light emitting side; and reflection attenuating layers for reflecting the light beam incident from an incident light side and attenuating the light beam incident from the light emitting side, the reflection attenuating layers being formed of a material, which can form the layers via a vacuum film forming method, on the fully reflecting portion.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: November 18, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Futoshi Osawa, Kumpei Oda, Takanori Oboshi, Masafumi Hayashi
  • Lens sheet and producing method therefor
    Publication number: 20030002159
    Abstract: A lens sheet of the present invention comprises: a lens layer having a plurality of unit lenses, each of which is adapted to fully reflect a part of an incident light beam on a fully reflecting portion so as to emit it from a light emitting portion, arranged in a one- or two-dimensional direction on a light emitting side; and reflection attenuating layers for reflecting the light beam incident from an incident light side and attenuating the light beam incident from the light emitting side, the reflection attenuating layers being formed of a material, which can form the layers via a vacuum film forming method, on the fully reflecting portion.
    Type: Application
    Filed: April 15, 2002
    Publication date: January 2, 2003
    Inventors: Futoshi Osawa, Kumpei Oda, Takanori Oboshi, Masafumi Hayashi