Patents by Inventor Shunsuke Ichizawa

Shunsuke Ichizawa 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 and lighting device
    Patent number: 8134780
    Abstract: A prism includes a light incident portion that has first and second convex portions, the first and second convex portions each are a convex portion that refracts rays of light incident to a prism body and reduces a spread angle after incidence to the prism body via the convex portion to be smaller than that before the incidence, the spread angle is an angle between a given two of the rays, a first reflecting surface, provided on the prism body, that can reflect a first ray of light that has entered the prism body via the first convex portion, a first emitting portion, provided on the prism body, that emits, to the outside, the first ray reflected by the first reflecting surface, and a second emitting portion that emits, to the outside, a second ray of light that has entered the prism body via the second convex portion.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: March 13, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Hiroyuki Ominato, Takeshi Kitakata, Shunsuke Ichizawa
  • Prism and lighting device
    Publication number: 20100238666
    Abstract: A prism includes a light incident portion that has first and second convex portions, the first and second convex portions each are a convex portion that refracts rays of light incident to a prism body and reduces a spread angle after incidence to the prism body via the convex portion to be smaller than that before the incidence, the spread angle is an angle between a given two of the rays, a first reflecting surface, provided on the prism body, that can reflect a first ray of light that has entered the prism body via the first convex portion, a first emitting portion, provided on the prism body, that emits, to the outside, the first ray reflected by the first reflecting surface, and a second emitting portion that emits, to the outside, a second ray of light that has entered the prism body via the second convex portion.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 23, 2010
    Applicant: BROTHER KOGYO KABUSHIKI KAISHA
    Inventors: Hiroyuki Ominato, Takeshi Kitakata, Shunsuke Ichizawa
  • LED lens
    Patent number: D614218
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: April 20, 2010
    Assignee: Brother Industries, Ltd.
    Inventors: Hiroyuki Ominato, Takeshi Kitakata, Nobuhiko Funato, Kenichi Mizuno, Shunsuke Ichizawa