Patents by Inventor Hidemasa Yoshida

Hidemasa Yoshida 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: 10821758
    Abstract: There is provided with an illumination device. The illumination device has a circuit board; a light source movable relative to the circuit board; a rod-like light guide that is configured to guide light from the light source and that is elongated in a longitudinal direction; and a flexible wiring configured to supply electricity from the circuit board to the light source. The light source is capable of moving in the longitudinal direction to reduce fluctuation in distance between the light source and a light receiving surface of the light guide when an end portion of the light guide in the longitudinal direction moves in the longitudinal direction.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 3, 2020
    Assignee: CANON COMPONENTS, INC.
    Inventors: Hidemasa Yoshida, Takeshi Sugiyama
  • Patent number: 10382647
    Abstract: An image sensor unit includes: multiple first light guides that shape light emitted by light sources into a line and emit linear light elongated in longitudinal direction to an object to be read (P); multiple holding members that hold each of the first light guides on a frame; and an image sensor that detects light from the object to be read (P). The multiple first light guides are parallel, and in a range in which the image sensor detects the light from the object to be read (P) in the longitudinal direction of the first light guides, center positions in the main-scan direction of the multiple holding members that hold one first light guide of the multiple light guides and center positions in the main-scan direction of the multiple holding members that hold another light guide different from the one first light guide deviate from each other.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: August 13, 2019
    Assignee: CANON COMPONENTS, INC.
    Inventor: Hidemasa Yoshida
  • Publication number: 20190168525
    Abstract: There is provided with an illumination device. The illumination device has a circuit board; a light source movable relative to the circuit board; a rod-like light guide that is configured to guide light from the light source and that is elongated in a longitudinal direction; and a flexible wiring configured to supply electricity from the circuit board to the light source. The light source is capable of moving in the longitudinal direction to reduce fluctuation in distance between the light source and a light receiving surface of the light guide when an end portion of the light guide in the longitudinal direction moves in the longitudinal direction.
    Type: Application
    Filed: November 30, 2018
    Publication date: June 6, 2019
    Inventors: Hidemasa YOSHIDA, Takeshi SUGIYAMA
  • Publication number: 20180347793
    Abstract: An illumination apparatus has a first longitudinal light source section that includes a first substrate and a second substrate on which a plurality of light sources are arranged in a line in the longitudinal direction, and a second longitudinal light source section that includes a third substrate and a fourth substrate on which a plurality of light sources are arranged in a line in the longitudinal direction. The first longitudinal light source section and the second longitudinal light source section are arranged side by side in the short direction. The plurality of light sources on the first longitudinal light source section and the plurality of light sources on the second longitudinal light source section are displaced from each other in the longitudinal direction of the first longitudinal light source section and the second longitudinal light source section.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 6, 2018
    Inventors: Ryo NATSUI, Junya KINOSHITA, Hidemasa YOSHIDA
  • Patent number: 10136019
    Abstract: An illumination apparatus includes a light source and an elongated light guide, wherein the light guide includes an emission surface that emits light from the light source and a reflection surface that reflects the light to the emission surface, the reflection surface includes a plurality of diffusion portions that diffuse the light, the diffusion portions have a shape of part of a sphere recessed from the reflection surface, a depth of the diffusion portions from the reflection surface is equal to or greater than 16.5% and equal to or smaller than 50% of a diameter of the sphere, and a width of the diffusion portions is equal to or greater than 0.1 mm and equal to or smaller than 50% of a width of the reflection surface.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: November 20, 2018
    Assignee: CANON COMPONENTS, INC.
    Inventors: Hidemasa Yoshida, Yoshihiko Tsumekawa, Akihito Takeshita
  • Patent number: 10091382
    Abstract: Provided is an illumination apparatus that applies light to an original, the illumination apparatus including: a light source; and a rod-shaped light guide including: an incident surface that receives the light from the light source; a reflection surface provided with a diffusion portion that diffuses the light incident on the incident surface; and an emission surface that emits, to the original, the light diffused by the diffusion portion. An area of the light guide is reduced by an inclination of the light guide from the incident surface side to a middle part in a longitudinal direction of the light guide, and the light guide is provided with the diffusion portion from the incident surface side to the middle part on the reflection surface.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 2, 2018
    Assignee: CANON COMPONENTS, INC.
    Inventors: Hidemasa Yoshida, Yoshihiko Tsumekawa, Akihito Takeshita
  • Publication number: 20180146116
    Abstract: An image sensor unit includes: multiple first light guides that shape light emitted by light sources into a line and emit linear light elongated in longitudinal direction to an object to be read (P); multiple holding members that hold each of the first light guides on a frame; and an image sensor that detects light from the object to be read (P). The multiple first light guides are parallel, and in a range in which the image sensor detects the light from the object to be read (P) in the longitudinal direction of the first light guides, center positions in the main-scan direction of the multiple holding members that hold one first light guide of the multiple light guides and center positions in the main-scan direction of the multiple holding members that hold another light guide different from the one first light guide deviate from each other.
    Type: Application
    Filed: April 18, 2016
    Publication date: May 24, 2018
    Inventor: Hidemasa YOSHIDA
  • Publication number: 20180131832
    Abstract: An image sensor unit includes a light source that emits light, and a light guide that guides the light from the light source to an object to be illuminated. The light guide includes a linearly elongated rod-like rod portion provided with a light emission surface from which light is emitted to the object to be illuminated, and a curved portion which is integrally connected to an end in the longitudinal direction of the rod portion, includes a light entering surface where the light emitted from the light source is emitted on an end of a side opposite to the rod portion and in which the center line is curved. A reflection member that reflects light is provided to be in close contact with at least a part of a surface of the curved portion.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 10, 2018
    Inventors: Yoshihiko TSUMEKAWA, Hidemasa YOSHIDA, Satoshi OTA, Masaki EHARA
  • Patent number: 9854118
    Abstract: A transmission light source unit includes a first light source portion including: a first light source; and a first light guide that shapes light emitted by the first light source into a line and emits the light toward a conveyance path of a paper sheet. An image sensor unit includes: a second light source portion that emits light toward the conveyance path of the paper sheet; and an image sensor that detects the light emitted by the first light source portion and transmitted through the paper sheet and the light emitted by the second light source portion and reflected by the paper sheet. A first light diffusing surface of the first light guide is provided with at least one of concave portions and convex portions including inclined surfaces and inclined relative to a normal line of the first light emission surface.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: December 26, 2017
    Assignee: CANON COMPONENTS, INC.
    Inventor: Hidemasa Yoshida
  • Patent number: 9838559
    Abstract: An illumination apparatus includes: a light source; a rod-like light guide having an incident surface that enters light from the light source that is disposed on one side in a main-scan direction, a diffusing surface that diffuses light that enters from the incident surface, and an emission surface that linearly emits light towards a bill; and a reflection member having a reflection surface that reflects light diffused by the diffusing surface to the light guide. The light guide has a locking projection that is locked in the reflection member on one side in the main-scan direction. The reflection member has a locking hole in which the locking projection is locked. A cut-out portion at which one part is cut out is formed in the locking hole.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: December 5, 2017
    Assignee: CANON COMPONENTS, INC.
    Inventors: Yoshihiko Tsumekawa, Hidemasa Yoshida
  • Publication number: 20170295290
    Abstract: Provided is an illumination apparatus that applies light to an original, the illumination apparatus including: a light source; and a rod-shaped light guide including: an incident surface that receives the light from the light source; a reflection surface provided with a diffusion portion that diffuses the light incident on the incident surface; and an emission surface that emits, to the original, the light diffused by the diffusion portion. An area of the light guide is reduced by an inclination of the light guide from the incident surface side to a middle part in a longitudinal direction of the light guide, and the light guide is provided with the diffusion portion from the incident surface side to the middle part on the reflection surface.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 12, 2017
    Inventors: Hidemasa YOSHIDA, Yoshihiko TSUMEKAWA, Akihito TAKESHITA
  • Publication number: 20170295289
    Abstract: An illumination apparatus includes a light source and an elongated light guide, wherein the light guide includes an emission surface that emits light from the light source and a reflection surface that reflects the light to the emission surface, the reflection surface includes a plurality of diffusion portions that diffuse the light, the diffusion portions have a shape of part of a sphere recessed from the reflection surface, a depth of the diffusion portions from the reflection surface is equal to or greater than 16.5% and equal to or smaller than 50% of a diameter of the sphere, and a width of the diffusion portions is equal to or greater than 0.1 mm and equal to or smaller than 50% of a width of the reflection surface.
    Type: Application
    Filed: April 7, 2017
    Publication date: October 12, 2017
    Inventors: Hidemasa YOSHIDA, Yoshihiko TSUMEKAWA, Akihito TAKESHITA
  • Patent number: 9780552
    Abstract: An electric-wire protection device that protects an electric wire by cutting off power to the wire when its temperature is elevated above a predetermined value is presented.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: October 3, 2017
    Assignee: SUMITOMO WIRING SYSTEMS, LTD.
    Inventors: Kazuhiro Kimoto, Hidemasa Yoshida, Takaki Ito
  • Patent number: 9638855
    Abstract: An illumination apparatus includes a light source and a light guide formed in a rod shape. An end surface in a longitudinal direction is an incident surface that receives light emitted from the light source. Diffusing patterns are formed on the light guide, and intervals between the diffusing patterns closer to the incident surface in a first area close to the incident surface are smaller than intervals between the diffusing patterns closer to the incident surface in a second area farther from the incident surface than the first area.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: May 2, 2017
    Assignee: CANON COMPONENTS, INC.
    Inventors: Hidemasa Yoshida, Yoshihiko Tsumekawa
  • Publication number: 20170064125
    Abstract: An illumination apparatus includes: a light source; a rod-like light guide having an incident surface that enters light from the light source that is disposed on one side in a main-scan direction, a diffusing surface that diffuses light that enters from the incident surface, and an emission surface that linearly emits light towards a bill; and a reflection member having a reflection surface that reflects light diffused by the diffusing surface to the light guide. The light guide has a locking projection that is locked in the reflection member on one side in the main-scan direction. The reflection member has a locking hole in which the locking projection is locked. A cut-out portion at which one part is cut out is formed in the locking hole.
    Type: Application
    Filed: August 8, 2016
    Publication date: March 2, 2017
    Inventors: Yoshihiko TSUMEKAWA, Hidemasa YOSHIDA
  • Publication number: 20170064124
    Abstract: A transmission light source unit includes a first light source portion including: a first light source; and a first light guide that shapes light emitted by the first light source into a line and emits the light toward a conveyance path of a paper sheet. An image sensor unit includes: a second light source portion that emits light toward the conveyance path of the paper sheet; and an image sensor that detects the light emitted by the first light source portion and transmitted through the paper sheet and the light emitted by the second light source portion and reflected by the paper sheet. A first light diffusing surface of the first light guide is provided with at least one of concave portions and convex portions including inclined surfaces and inclined relative to a normal line of the first light emission surface.
    Type: Application
    Filed: August 1, 2016
    Publication date: March 2, 2017
    Inventor: Hidemasa YOSHIDA
  • Patent number: 9478090
    Abstract: An image sensor unit includes: a plurality of light sources each including an LED chip; a plurality of light guides that are arranged in parallel to face incident surfaces on one side in a longitudinal direction for each of the plurality of light sources and that guide light from the plurality of light sources to a bill; an image sensor that converts light from the bill to an electric signal; a sensor substrate for mounting the image sensor; and a circuit board that is provided with the plurality of light sources on a same mounting surface and that is arranged on the sensor substrate on one side in the longitudinal direction of the plurality of light guides, wherein the sensor substrate includes a connection hole on one side in the longitudinal direction of the sensor substrate, and the circuit board is connected to the sensor substrate by connecting a connecting portion including a plurality of external connection pads to the connection hole.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: October 25, 2016
    Assignee: CANON COMPONENTS, INC.
    Inventors: Shuuichi Shimoda, Junya Kinoshita, Yoshio Kureishi, Ryoki Matsui, Hidemasa Yoshida, Yoshihiko Tsumekawa, Hidehisa Takahashi, Akifumi Fujiwara, Suguru Tashiro, Takashi Chiba
  • Patent number: 9207376
    Abstract: An illumination apparatus includes: a light guide that is formed in a rod shape and includes a positioning portion that is formed at one end in a longitudinal direction, and light incident surfaces that are formed at two end faces in the longitudinal direction; and light sources that are arranged in the vicinity of the light incident surfaces, respectively, and that emit light that is incident on the incident surfaces. The light guide is formed by injection molding. A gate portion for supplying a resin material during injection molding opens at a position that corresponds to a tip face of the positioning portion.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: December 8, 2015
    Assignee: CANON COMPONENTS, INC.
    Inventor: Hidemasa Yoshida
  • Patent number: 9158062
    Abstract: An illumination apparatus includes: a rod-like light guide member that directs light emitted from a first light source and a second light source from an emission surface to an illuminated body while propagating the light by reflection surfaces; and a light blocking member including a second surrounding portion slidably covering another end of the light guide member, wherein the second surrounding portion includes: a light blocking portion protruding toward one end of the light guide member and covering the emission surface of the light guide member; and a cut-out portion adjacent to the light blocking portion and exposing the reflection surface of the light guide member.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: October 13, 2015
    Assignee: CANON COMPONENTS, INC.
    Inventors: Hidemasa Yoshida, Yoshihiko Tsumekawa
  • Patent number: 9137910
    Abstract: An electrical junction box includes: a sliding member slidable between a second position where a first connector is allowed to be inserted into a first connector fitting portion, and a first position where the first connector regularly fitted to the first connector fitting portion is held between the sliding member and the first connector fitting portion, and a second connector is allowed to be inserted into a second connector fitting portion; and a locking projection with which a locking arm of the sliding member is locked. The locking projection includes: a first inclined wall inclined in a direction away from the first connector fitting portion as extended toward the first connector fitting portion from the second connector fitting portion; a second inclined wall inclined in a direction approaching the first connector fitting portion; and a third wall perpendicular to an outer surface of the first connector fitting portion.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 15, 2015
    Assignee: Yazaki Corporation
    Inventors: Keisuke Ozawa, Hidemasa Yoshida