Patents by Inventor Yusuke Akioka

Yusuke Akioka 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).

  • Patent number: 7918573
    Abstract: An aspect of the present invention provides a compact light guide device and a light guide apparatus having high productivity and an even light emission property. A light guide device is made of a translucent material, and LED is disposed in a notch step portion formed by cutting at least a part of an inner peripheral surface, thereby guiding light from LED to emit the light to the outside. Particularly, in a surface and a backside of a sidewall portion of the notch step portion, the sidewall portion facing a light-emitting portion of the light-emitting element, at least an inward surface constitutes a reflecting surface diffusing the light, and a pair of facing surface adjacent to each other on both sides of the sidewall portion constitutes a light acceptance surface receiving the light reflected from the reflecting surface.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: April 5, 2011
    Assignee: OMRON Corporation
    Inventors: Toshimitsu Fujiwara, Atsushi Sawada, Kosuke Sanari, Yusuke Akioka
  • Patent number: 7914195
    Abstract: A display device has a light guide plate formed with a display pattern by a plurality of diffusion dots having translucency in a display pattern formed region, a light shielding layer, and a light source. A plurality of the light guide plates are arranged facing each other, and the light shielding layer is sandwiched between the light guide plates. Light from the light source is selectively introduced to one of the light guide plates to display the display pattern of the light guide plate. The light shielding layer has a surface facing an observer's side formed by a low reflectivity material and a surface facing a side opposite to the observer's side formed by a high reflectivity material. A region facing the display pattern of the light guide plate positioned on the side opposite to the observer's side than the light shielding layer is cut out.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: March 29, 2011
    Assignee: OMRON Corporation
    Inventors: Atsushi Sawada, Toshimitsu Fujiwara, Yuji Sakashita, Yusuke Akioka
  • Publication number: 20090219734
    Abstract: A display device has a light guide plate formed with a display pattern by a plurality of diffusion dots having translucency in a display pattern formed region, a light shielding layer, and a light source. A plurality of the light guide plates are arranged facing each other, and the light shielding layer is sandwiched between the light guide plates. Light from the light source is selectively introduced to one of the light guide plates to display the display pattern of the light guide plate. The light shielding layer has a surface facing an observer's side formed by a low reflectivity material and a surface facing a side opposite to the observer's side formed by a high reflectivity material. A region facing the display pattern of the light guide plate positioned on the side opposite to the observer's side than the light shielding layer is cut out.
    Type: Application
    Filed: February 11, 2009
    Publication date: September 3, 2009
    Applicant: OMRON Corporation
    Inventors: Atsushi Sawada, Toshimitsu Fujiwara, Yuji Sakashita, Yusuke Akioka
  • Publication number: 20080205056
    Abstract: An aspect of the present invention provides a compact light guide device and a light guide apparatus having high productivity and an even light emission property. A light guide device is made of a translucent material, and LED is disposed in a notch step portion formed by cutting at least a part of an inner peripheral surface, thereby guiding light from LED to emit the light to emit the light to the outside. Particularly, in a surface and a backside of a sidewall portion of the notch step portion, the sidewall portion facing a light-emitting portion of the light-emitting element, at least an inward surface constitutes a reflecting surface diffusing the light, and a pair of facing surface adjacent to each other on both sides of the sidewall portion constitutes a light acceptance surface receiving the light reflected from the reflecting surface.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 28, 2008
    Applicant: OMRON CORPORATION
    Inventors: Toshimitsu Fujiwara, Atsushi Sawada, Kosuke Sanari, Yusuke Akioka
  • Patent number: D589207
    Type: Grant
    Filed: August 15, 2007
    Date of Patent: March 24, 2009
    Assignee: Omron Corporation
    Inventors: Toshimitsu Fujiwara, Atsushi Sawada, Yusuke Akioka, Kosuke Sanari