Patents by Inventor Hiroshi Fujimori

Hiroshi Fujimori 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: 11906156
    Abstract: A light emitting device includes: a mounting board; a light source positioned on the mounting board; a light diffusion plate; a diffuse reflector positioned between the mounting board and the light diffusion plate, and above at least part of an emission face of the light source; and a wavelength conversion layer positioned on or above the diffuse reflector.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: February 20, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Motokazu Yamada, Takeshi Tamura, Hiroshi Fujimori
  • Publication number: 20230151945
    Abstract: A light emitting device includes: a mounting board; a light source positioned on the mounting board; a light diffusion plate; a diffuse reflector positioned between the mounting board and the light diffusion plate, and above at least part of an emission face of the light source; and a wavelength conversion layer positioned on or above the diffuse reflector.
    Type: Application
    Filed: January 20, 2023
    Publication date: May 18, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Motokazu YAMADA, Takeshi TAMURA, Hiroshi FUJIMORI
  • Patent number: 11585516
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; first and second prism array layers stacked with each other; a dichroic layer positioned between the first and second prism array layers and the plurality of light sources; and a wavelength conversion layer positioned between the first and second prism array layers and the dichroic layer.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: February 21, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Motokazu Yamada, Takeshi Tamura, Hiroshi Fujimori
  • Patent number: 11525556
    Abstract: A light emitting device includes a substrate, a plurality of light sources, a partitioning member and a diffuser sheet. The light sources are disposed on an upper surface of the substrate. The partitioning member is disposed on the upper surface of the substrate and including top parts. The partitioning member is reflective. The diffuser sheet is in contact with the top parts of the partitioning member.
    Type: Grant
    Filed: June 23, 2021
    Date of Patent: December 13, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takeshi Tamura, Hiroshi Fujimori, Motokazu Yamada
  • Publication number: 20210372591
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; first and second prism array layers stacked with each other; a dichroic layer positioned between the first and second prism array layers and the plurality of light sources; and a wavelength conversion layer positioned between the first and second prism array layers and the dichroic layer.
    Type: Application
    Filed: August 11, 2021
    Publication date: December 2, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Motokazu YAMADA, Takeshi TAMURA, Hiroshi FUJIMORI
  • Publication number: 20210317971
    Abstract: A light emitting device includes a substrate, a plurality of light sources, a partitioning member and a diffuser sheet. The light sources are disposed on an upper surface of the substrate. The partitioning member is disposed on the upper surface of the substrate and including top parts. The partitioning member is reflective. The diffuser sheet is in contact with the top parts of the partitioning member.
    Type: Application
    Filed: June 23, 2021
    Publication date: October 14, 2021
    Inventors: Takeshi TAMURA, Hiroshi FUJIMORI, Motokazu YAMADA
  • Patent number: 11118757
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; a light diffusion plate; a half mirror positioned between the light diffusion plate and the plurality of light sources; and a plurality of diffuse reflectors positioned between the mounting board and the light diffusion plate, and above at least part of each emission face of the plurality of light sources. The diffuse reflectors comprise a resin, and particles dispersed in the resin. Each of the diffuse reflectors is positioned in an area that, in the top view, is larger than and includes the emission face of each light source. A density of the particles in said area, in the top view, is higher in a first portion located immediately above the emission face of each light source than in a second portion located around a periphery of the first portion.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: September 14, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Motokazu Yamada, Takeshi Tamura, Hiroshi Fujimori
  • Patent number: 11047551
    Abstract: A light emitting device includes a plurality of light sources, a substrate, a partitioning member, a diffuser sheet, a plurality of first reflectors, and a second reflector. Each of the light sources includes a light emitting element and an encapsulant covering the light emitting element. The light sources are disposed on the substrate. The partitioning member surrounds the light sources and has a plurality of areas formed by walls having top parts. The walls include surfaces inclined with respect to an upper surface of the substrate to spread out from bottom parts toward the top parts. The diffuser sheet is provided over the partitioning member. The first reflectors are provided directly over the light sources, on an upper surface or a lower surface of the diffuser sheet. The second reflector is provided directly over the top parts, on the upper surface or the lower surface of the diffuser sheet.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: June 29, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Takeshi Tamura, Hiroshi Fujimori, Motokazu Yamada
  • Publication number: 20200278103
    Abstract: A light emitting device includes a plurality of light sources, a substrate, a partitioning member, a diffuser sheet, a plurality of first reflectors, and a second reflector. Each of the light sources includes a light emitting element and an encapsulant covering the light emitting element. The light sources are disposed on the substrate. The partitioning member surrounds the light sources and has a plurality of areas formed by walls having top parts. The walls include surfaces inclined with respect to an upper surface of the substrate to spread out from bottom parts toward the top parts. The diffuser sheet is provided over the partitioning member. The first reflectors are provided directly over the light sources, on an upper surface or a lower surface of the diffuser sheet. The second reflector is provided directly over the top parts, on the upper surface or the lower surface of the diffuser sheet.
    Type: Application
    Filed: May 19, 2020
    Publication date: September 3, 2020
    Inventors: Takeshi TAMURA, Hiroshi FUJIMORI, Motokazu YAMADA
  • Patent number: 10670233
    Abstract: A light emitting device includes a mounting board on which a plurality of light sources are disposed; a partitioning member surrounding the light sources and including a plurality of walls that include top parts and form a plurality of areas; a diffuser sheet provided above the partitioning member and supported directly or indirectly by at least one of the top parts; a plurality of first reflectors provided directly above the light sources and positioned on one of an upper surface and a lower surface of the diffuser sheet; a second reflector provided directly above the top parts and positioned on one of the upper surface and the lower surface of the diffuser sheet; and a wavelength conversion sheet positioned above the diffuser sheet. The first reflectors contain a light absorbing material that absorbs at least part of a wavelength of light from the light sources.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: June 2, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Takeshi Tamura, Hiroshi Fujimori, Motokazu Yamada
  • Publication number: 20200096175
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; a light diffusion plate; a half mirror positioned between the light diffusion plate and the plurality of light sources; and a plurality of diffuse reflectors positioned between the mounting board and the light diffusion plate, and above at least part of each emission face of the plurality of light sources. The diffuse reflectors comprise a resin, and particles dispersed in the resin. Each of the diffuse reflectors is positioned in an area that, in the top view, is larger than and includes the emission face of each light source. A density of the particles in said area, in the top view, is higher in a first portion located immediately above the emission face of each light source than in a second portion located around a periphery of the first portion.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Motokazu YAMADA, Takeshi TAMURA, Hiroshi FUJIMORI
  • Patent number: 10527257
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; a light diffusion plate; a half mirror positioned between the light diffusion plate and the plurality of light sources; and a plurality of diffuse reflectors positioned between the mounting board and the light diffusion plate, and above at least part of each emission face of the plurality of light sources.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: January 7, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Motokazu Yamada, Takeshi Tamura, Hiroshi Fujimori
  • Publication number: 20190211996
    Abstract: A light emitting device includes a mounting board on which a plurality of light sources are disposed; a partitioning member surrounding the light sources and including a plurality of walls that include top parts and form a plurality of areas; a diffuser sheet provided above the partitioning member and supported directly or indirectly by at least one of the top parts; a plurality of first reflectors provided directly above the light sources and positioned on one of an upper surface and a lower surface of the diffuser sheet; a second reflector provided directly above the top parts and positioned on one of the upper surface and the lower surface of the diffuser sheet; and a wavelength conversion sheet positioned above the diffuser sheet. The first reflectors contain a light absorbing material that absorbs at least part of a wavelength of light from the light sources.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Inventors: Takeshi TAMURA, Hiroshi FUJIMORI, Motokazu YAMADA
  • Patent number: 10274168
    Abstract: A light emitting device includes a mounting board on which a plurality of light sources are disposed; a partitioning member surrounding the light sources and including a plurality of walls that include top parts and form a plurality of areas; a diffuser sheet that is provided above the partitioning member and is supported directly or indirectly by at least one of the top parts of the partitioning member; a plurality of first reflectors that are provided directly above the light sources and are positioned on one of an upper surface and a lower surface of the diffuser sheet; and a second reflector that is provided directly above the top parts and is positioned on one of the upper surface and the lower surface of the diffuser sheet.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: April 30, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Takeshi Tamura, Hiroshi Fujimori, Motokazu Yamada
  • Patent number: 10180232
    Abstract: An optical member includes one or more lens surfaces, each lens surface comprising a curved surface having: a curvature in a first direction, and a curvature in a second direction that is perpendicular to the first direction in an imaginary plane perpendicular to an optical axis of incident light. Each of the one or more lens surfaces has a substantially rectangular planar shape when viewed in an optical axis direction, the substantially rectangular planar shape being defined by two sides substantially parallel to the first direction and two sides substantially parallel to the second direction. The curvature in the second direction continuously increases from a first end of each of the one or more lens surfaces in the first direction toward a second end of each of the one or more lens surfaces in the first direction.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: January 15, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Hiroshi Fujimori, Akiyoshi Wakafuji
  • Publication number: 20180080625
    Abstract: A light emitting device includes: a mounting board; a plurality of light sources positioned on the mounting board; a light diffusion plate; a half mirror positioned between the light diffusion plate and the plurality of light sources; and a plurality of diffuse reflectors positioned between the mounting board and the light diffusion plate, and above at least part of each emission face of the plurality of light sources.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 22, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Motokazu YAMADA, Takeshi TAMURA, Hiroshi FUJIMORI
  • Publication number: 20180058660
    Abstract: An optical member includes one or more lens surfaces, each lens surface comprising a curved surface having: a curvature in a first direction, and a curvature in a second direction that is perpendicular to the first direction in an imaginary plane perpendicular to an optical axis of incident light. Each of the one or more lens surfaces has a substantially rectangular planar shape when viewed in an optical axis direction, the substantially rectangular planar shape being defined by two sides substantially parallel to the first direction and two sides substantially parallel to the second direction. The curvature in the second direction continuously increases from a first end of each of the one or more lens surfaces in the first direction toward a second end of each of the one or more lens surfaces in the first direction.
    Type: Application
    Filed: August 30, 2017
    Publication date: March 1, 2018
    Applicant: NICHIA CORPORATION
    Inventors: Hiroshi FUJIMORI, Akiyoshi WAKAFUJI
  • Publication number: 20180023784
    Abstract: A light emitting device includes a mounting board on which a plurality of light sources are disposed; a partitioning member surrounding the light sources and including a plurality of walls that include top parts and form a plurality of areas; a diffuser sheet that is provided above the partitioning member and is supported directly or indirectly by at least one of the top parts of the partitioning member; a plurality of first reflectors that are provided directly above the light sources and are positioned on one of an upper surface and a lower surface of the diffuser sheet; and a second reflector that is provided directly above the top parts and is positioned on one of the upper surface and the lower surface of the diffuser sheet.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 25, 2018
    Inventors: Takeshi TAMURA, Hiroshi FUJIMORI, Motokazu YAMADA
  • Publication number: 20170350010
    Abstract: [Object] To provide a resin container having a dense and. thin coating with good gas barrier properties and a resin-container coating apparatus. [Solution] A metal oxide film 102 is formed on at least one of inner and outer surfaces of a resin container 101. The metal oxide film 102 includes a stack of layers of a metal forming the metal oxide film that are deposited on an atomic level and has a thickness of 5 to 100 nm.
    Type: Application
    Filed: October 30, 2015
    Publication date: December 7, 2017
    Applicants: TAKEMOTO YOHKI CO., LTD.
    Inventors: Fumihiko Hirose, Etsuko Takemoto, Hiroshi Fujimori, Tsuyoshi Mashima, Hitoshi Sakamoto, Kenichi Ishibashi
  • Patent number: 4578729
    Abstract: A magentic recording medium in which a thin ferromagnetic film is formed over a strip or sheet of plastic film whose surface is formed with grain-, rumple- or worm-like nodules into which may be dispersed finely divided particles of the diameter ranging from 0.01 to 0.2 .mu.m. In the case of a thin ferromagnetic metal film type recording medium, steep protrusions of the height ranging from 100 to 2,000 .ANG. are distributed over the surface at the average density of 10.sup.4 to 10.sup.6 per mm.sup.2.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: March 25, 1986
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takashi Suzuki, Hiroshi Fujimori, Masaru Odagiri