Patents by Inventor Masayuki Katsumata

Masayuki Katsumata 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).

  • Linear lighting apparatus and image reader using the same
    Patent number: 8167475
    Abstract: Conventional methods using two optical waveguide members are disadvantageous in cost because they require two optical waveguide members and pairs of their associated components. A linear lighting apparatus includes a rod-like optical waveguide member (100) formed by a transparent material, a light source placed near an end face of the optical waveguide member (100) in the longitudinal direction, and a light exit surface (101) formed on at least part of the optical waveguide member (100) in the longitudinal direction. A cross section of the optical waveguide member in the widthwise direction has a plurality of reflecting areas (102, 103) at positions to face a light exit surface (101) and a barrier (106) at a boundary portion between the reflecting areas (102, 103).
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: May 1, 2012
    Assignee: Canon Components, Inc.
    Inventors: Masayuki Katsumata, Azusa Shiratori, Shuuichi Shimoda, Masami Tabata
  • LINEAR LIGHTING APPARATUS AND IMAGE READER USING THE SAME
    Publication number: 20090010020
    Abstract: Conventional methods using two optical waveguide members are disadvantageous in cost because they require two optical waveguide members and pairs of their associated components. A linear lighting apparatus includes a rod-like optical waveguide member (100) formed by a transparent material, a light source placed near an end face of the optical waveguide member (100) in the longitudinal direction, and a light exit surface (101) formed on at least part of the optical waveguide member (100) in the longitudinal direction. A cross section of the optical waveguide member in the widthwise direction has a plurality of reflecting areas (102, 103) at positions to face a light exit surface (101) and a barrier (106) at a boundary portion between the reflecting areas (102, 103).
    Type: Application
    Filed: September 10, 2008
    Publication date: January 8, 2009
    Applicant: CANON COMPONENTS, INC.
    Inventors: Masayuki Katsumata, Azusa Shiratori, Shuuichi Shimoda, Masami Tabata