Patents Assigned to Nichia Corporation
  • Publication number: 20200403124
    Abstract: A light-emitting device includes a light-emitting element having a top surface, a bottom surface opposite to the top surface, and side surfaces connecting the top surface and the bottom surface. An element electrode of the light-emitting element is located on the bottom surface. A phosphor layer is disposed above the top surface of the light-emitting element and having side surfaces. A reflective member covers side surfaces of the light-emitting element and side surfaces of the phosphor layer. A dielectric multilayer film is disposed on at least one of the side surfaces of the light-emitting element and disposed on at least one of the side surfaces of the phosphor layer and not located between the light emitting element and the phosphor layer. The dielectric multilayer film is not provided on an upper surface of the phosphor layer.
    Type: Application
    Filed: September 3, 2020
    Publication date: December 24, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Daisuke IWAKURA, Yoshiki INOUE
  • Publication number: 20200397269
    Abstract: An image-capturing device includes: an illumination light source configured to emit illumination light to illuminate an object; a laser light source configured to emit laser light with a peak wavelength in a range of wavelengths absorbed or reflected by at least one region of the object; an imaging device configured to take an image of the object; a speckle variable device configured to change a speckle pattern in an image acquired by the imaging device over time; and an image processing device configured to process the image acquired by the imaging device, which includes: measuring a change over time in a intensity signal from each pixel constituting the image, and dividing an imaged region of the object into a plurality of portions based on a waveform of the change in the intensity signal over time.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 24, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Tadaaki MIYATA, Hideki KONDO
  • Publication number: 20200397351
    Abstract: A light source device includes: a laser light source configured to emit laser light having a peak wavelength included in a wavelength range of light absorbed or reflected by a first region or a second region of an object under study, the laser light source being configured to form a speckle pattern having speckle contrasts that differ between the first region and the second region; and a speckle variable device configured to control a coherence of the laser light in response to an external control signal.
    Type: Application
    Filed: June 16, 2020
    Publication date: December 24, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Tadaaki MIYATA
  • Patent number: 10873015
    Abstract: A light emitting device includes a plurality of light emitting elements and a package. The package includes two metal parts on which the plurality of light emitting elements are disposed, and a resin body securing the two metal parts. The resin body has four sides and four connecting parts alternately connected to one another in a top view. Two subsequent sides are perpendicular to each other. Each of the two metal parts includes a die-pad on which one or more of the plurality of light emitting elements are disposed, and two extending portions extending from the die-pad. An end portion of each of the two extending portions is extended laterally outward from a respective one of the connecting parts of the resin body, and the end portion of each of the two extending portions is located inward of virtual extension lines of corresponding two sides of the resin body.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: December 22, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Hiroaki Ukawa, Ryo Iwasa
  • Patent number: 10873008
    Abstract: A light emitting device including: a light emitting element, a phosphor plate, and a light guiding part. The lower face of the light emitting element has a rectangular shape. The light guiding part covers lateral faces of the light emitting element and the lower face of the phosphor plate that is exposed from the light emitting element. The light guiding part has one or more lateral faces having at least one of structures below: a height at both ends being different from the height at a central area; outer lateral faces being parallel to the lateral faces of the light emitting element.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: December 22, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Shusaku Bando, Takanobu Sogai, Satoshi Shichijo
  • Patent number: 10873007
    Abstract: A light-emitting device includes a package and a light-emitting element. The package includes a pair of leads each including a main body portion and an extension portion, a resin portion holding the pair of leads, and a concave portion having a bottom surface where an upper surface of each of the pair of leads is exposed. The extension portion extends from an outer edge of the main body portion to an outer surface of the package. The light-emitting element is mounted at the bottom surface of the concave portion. The main body portion has a trench and a through-hole in a portion of the main body portion buried in a sidewall of the concave portion. The through-hole is continuous with the trench. When viewed in top-view, the through-hole is provided inward of the outer edge of the main body portion at a vicinity of the extension portion.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: December 22, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Ryosuke Wakaki
  • Publication number: 20200395509
    Abstract: A method of manufacturing a light emitting element includes forming an n-side electrode at a lateral surface of an n-type semiconductor layer so as not to cover a light extraction surface. Using a portion of a silicon substrate left on an n-type semiconductor layer as a mask, an insulating film formed at a lateral surface of a semiconductor layered body is removed, to expose a lateral surface of the n-type semiconductor layer and a lateral surface of a resin layer. An n-side electrode positioned between the lateral surface of the n-type semiconductor layer and the lateral surface of the resin layer and connected to the exposed lateral surface of the n-type semiconductor layer is formed. Thereafter, the portion of the silicon substrate is removed, to expose the n-type semiconductor layer.
    Type: Application
    Filed: June 11, 2020
    Publication date: December 17, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Hirofumi NISHIYAMA
  • Publication number: 20200395502
    Abstract: A method of manufacturing a light-emitting device 1 includes a step of providing first phosphor sheets 11, a step of providing second phosphor sheets 12, a step of providing a light-emitting element 13, a selection step of selecting a combination of one of the first phosphor sheets 11 and one of the second phosphor sheets 12 on the basis of a wavelength conversion characteristic of each of the first phosphor sheets 11 and a wavelength conversion characteristic of each of the second phosphor sheets 12, a step of obtaining a plurality of first phosphor pieces 11c and a plurality of second phosphor pieces 12c from the selected first phosphor sheet 11 and the selected second phosphor sheet 12, and a step of disposing one of the first phosphor pieces 11c and one of the second phosphor pieces 12c on or above the light-emitting element 13.
    Type: Application
    Filed: June 10, 2020
    Publication date: December 17, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Suguru BEPPU
  • Publication number: 20200393103
    Abstract: A method of manufacturing a light emitting device includes: bonding a wavelength conversion sheet containing phosphor particles onto upper surfaces of light emitting elements mounted on a substrate; dividing the wavelength conversion sheet into a plurality of wavelength conversion members, each corresponding to one of the light emitting elements, by cutting from an upper surface of the wavelength conversion sheet; forming light reflecting members between adjacent ones of the wavelength conversion members to reflect light emitted from the light emitting elements; and machining an upper surface of a collective body including the wavelength conversion members and the light reflecting members into a curved surface having a concave shape.
    Type: Application
    Filed: August 28, 2020
    Publication date: December 17, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Hiroshi MIYAIRI, Shinya ENDO
  • Patent number: 10866456
    Abstract: A light emitting module with a reduced thickness is provided. A method of manufacturing a light emitting module sequentially includes: providing a light guiding plate having a first main surface being a light emitting surface, and a second main surface on the side opposite to the first main surface; providing a plurality of light emitting elements on the light guiding plate; and forming a wiring electrically connecting the plurality of light emitting elements. A light emitting module includes: a light guiding plate having a first main surface and a second main surface; a plurality of wavelength conversion parts disposed at the second main surface of the light guiding plate so as to be spaced apart from each other; a plurality of light emitting elements respectively bonded to the plurality of wavelength conversion parts; and a wiring connected to the plurality of light emitting elements.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: December 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadao Hayashi
  • Patent number: 10867728
    Abstract: The present invention relates to a method of producing an anisotropic magnetic powder having good magnetic properties. The method of producing an anisotropic magnetic powder includes: pretreating an oxide containing Sm and Fe by heat treatment in a reducing gas atmosphere to obtain a partial oxide; heat treating the partial oxide in the presence of a reductant at a first temperature of 1000° C. or higher and 1090° C. or lower and then at a second temperature lower than the first temperature and in the range of 980° C. or higher and 1070° C. or lower to obtain alloy particles; and nitriding the alloy particles to obtain an anisotropic magnetic powder.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: December 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Hisashi Maehara
  • Patent number: 10866495
    Abstract: A fly-eye lens includes: an incident lens assemblage comprising a plurality of incident lenses that are aligned in a vertical direction, wherein each of the incident lenses has a quadrangular shape, wherein horizontal lens widths of the incident lens are the same, and wherein vertical lens widths of at least some of the incident lens are different from one another; and an emission lens assemblage comprising a plurality of emission lenses that are aligned in the vertical direction so as to be optically opposed to the incident lenses, wherein each of the emission lenses has a quadrangular shape, and wherein horizontal lens widths of the emission lenses lens are the same.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: December 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Takanori Aruga
  • Patent number: 10868219
    Abstract: A method for manufacturing a semiconductor element includes providing a semiconductor layer on a carbide substrate, the carbide substrate having a semiconductor layer contact surface connected to the semiconductor layer and a reflective layer contact surface opposite to the semiconductor layer contact surface. A reflective layer is provided on the reflective layer contact surface of the carbide substrate. The reflective layer contains silver and at least one of oxide particles and nitride particles.
    Type: Grant
    Filed: February 27, 2020
    Date of Patent: December 15, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Shuji Shioji
  • Publication number: 20200388990
    Abstract: A light source device includes a plurality of external-cavity laser modules configured to emit a plurality of laser beams of different peak wavelengths, the plurality of external-cavity laser modules including at least one first laser module and at least one second laser module; and a beam combiner configured to coaxially combine the plurality of laser beams to generate a wavelength-combined beam. Each of the plurality of external-cavity laser modules includes: a collimation laser light source having a Littrow configuration, and a diffraction grating configured to selectively reflect and transmit light of a predetermined wavelength. The plurality of external-cavity laser modules are arranged so that the plurality of laser beams are incident on a same region of the beam combiner at different angles. A first distance between the first laser module and the beam combiner is different from a second distance between the second laser module and the beam combiner.
    Type: Application
    Filed: June 8, 2020
    Publication date: December 10, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Norihiro DEJIMA, Masaki OMORI
  • Publication number: 20200388724
    Abstract: A light emitting element comprises: a semiconductor layered body including a first semiconductor layer of a first conductivity type, a second semiconductor layer of a second conductivity type, and a light emitting layer provided between the first semiconductor layer and the second semiconductor layer; and a dielectric member being in contact with the first semiconductor layer. The first semiconductor layer refractive index with respect to a wavelength of light differs from the light emitting layer refractive index with respect to the wavelength of light. The dielectric member comprises a first dielectric portion and a second dielectric portion. In a second direction that is perpendicular to a first direction that extends from the second semiconductor layer to the first semiconductor layer, a first portion of the first semiconductor layer is positioned between the first dielectric portion and the second dielectric portion. The first dielectric portion comprises the first surface and the second surface.
    Type: Application
    Filed: June 5, 2020
    Publication date: December 10, 2020
    Applicant: NICHIA CORPORATION
    Inventor: Yusuke AOKI
  • Publication number: 20200388991
    Abstract: An external cavity laser module is configured to emit a laser beam and includes: a collimation laser light source having a Littrow configuration; a diffraction grating configured to selectively reflect and transmit light of a specific wavelength; a support member supporting the collimation laser light source and the diffraction grating; and a base rotatably supporting the support member to correct an axial direction of the laser beam emitted from the external cavity laser module.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Norihiro DEJIMA, Masaki OMORI, Yuto OKI
  • Patent number: 10862276
    Abstract: A method of manufacturing a light emitting device includes: providing a light emitting device in which a first and second semiconductor laser elements are connected in series; performing a first measurement that includes supplying current to the first semiconductor laser element to measure at least one property of the first semiconductor laser element, and supplying current to the second semiconductor laser element to measure at least one property of the second semiconductor laser element; supplying current to the first and second semiconductor laser elements for a length of time; performing a second measurement that includes supplying current to the first semiconductor laser element to measure the at least one property of the first semiconductor laser element, and supplying current to the second semiconductor laser element to measure the at least one property of the second semiconductor laser element, and evaluating the first and second semiconductor laser elements.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: December 8, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tomokazu Taji
  • Patent number: 10859216
    Abstract: A light emitting device comprising: an optical component comprising: multiple light transmissive members, the light transmissive member having an upper face, a lower face, and at least one lateral face; and a light reflecting member that surrounds the at least one lateral face of the light transmissive member, wherein the light reflecting member is made of a ceramic that contains a plurality of pores, and wherein the plurality of pores are localized in a vicinity of the light transmissive member in a cross section that extends through the light transmissive member and the light reflecting member; multiple light emitting elements disposed on an upper surface of a substrate; and wherein the optical component is arranged on upper faces of the light emitting elements such that one light transmissive member is positioned on the upper face of one or two or more light emitting elements.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: December 8, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Teruhiko Noguchi, Toshio Akita, Yasuhisa Kotani
  • Patent number: 10862012
    Abstract: A method of manufacturing a light emitting device includes: providing a wiring substrate on which a light emitting element and a frame body surrounding the light emitting element are disposed, the frame body having a corner portion in a top view; forming a support column member in contact with at least one of an inner peripheral surface and a top surface of the corner portion of the frame body; and forming a light-transmissive member at least partially in contact with the frame body and the support column member with at least a part of the light-transmissive member being positioned above the frame body and the support column member.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: December 8, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Junji Takeichi
  • Patent number: 10862266
    Abstract: A light source device includes a sub-mount, a semiconductor laser element flip chip mounted on the sub-mount, and a planar lightwave circuit (PLC) which is an optical member having a waveguide disposed on a substrate. The semiconductor laser element and the waveguide are arranged such that a light-emitting point of the semiconductor laser element and a core of the waveguide are substantially aligned. A light-reflecting surface is provided such that light emitted from the semiconductor laser element and propagating along a propagating direction in the planar lightwave circuit is reflected at the light-reflecting surface in a direction substantially normal to the propagating direction. A portion of the substrate of the planar lightwave circuit is removed at least in a predetermined range from an end opposite to a light incident surface of the planar lightwave circuit.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: December 8, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata