Patents by Inventor Tadaaki Miyata

Tadaaki Miyata 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).

  • Publication number: 20220013429
    Abstract: A semiconductor device includes: a semiconductor element; a submount on which the semiconductor element is mounted, wherein the submount has a first surface on which the semiconductor element is mounted, a second surface located on a side opposite the first surface, and a lateral surface located between the first surface and the second surface, and wherein the submount comprises: a groove located at the second surface, a heat dissipation portion located at the second surface, and an electrode pattern located at the first surface; a package substrate on which the submount is mounted; a first joint member that physically joins the heat dissipation portion to the package substrate; and a connection portion located on the side surface, wherein the connection portion electrically connects the electrode pattern and the package substrate, and the connection portion comprises a second joint member.
    Type: Application
    Filed: July 6, 2021
    Publication date: January 13, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Tadaaki MIYATA, Yoshihiro KIMURA, Masatoshi NAKAGAKI
  • Publication number: 20210286158
    Abstract: A light source device includes a condensing lens, a laser light source, a first anti-reflection film, and a second anti-reflection film. The condensing lens has a curved surface. The laser light source includes a plurality of laser elements configured to emit laser beams incident on different regions of the curved surface of the condensing lens. The first anti-reflection film and the second anti-reflection film are disposed in different regions of the curved surface. The first anti-reflection film has a reflectance characteristic different from a reflectance characteristic of the second anti-reflection film.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventor: Tadaaki MIYATA
  • Publication number: 20210194208
    Abstract: A light source device includes at least one first wiring, a plurality of second wirings, a plurality of light emitting elements each having a lower-surface-side electrode connected to a respective one of the at least one first wiring, a plurality of protective elements each having a lower-surface-side electrode connected to a respective one of the plurality of second wirings each corresponding to a respective one of the plurality of light emitting elements, each of the plurality of protective elements connected to a respective one of the plurality of light emitting elements, a plurality of first wirings each connecting an upper-surface-side electrode of each of the plurality of light emitting elements and a respective one of the plurality of second wirings, a plurality of second wires each connecting the upper-surface-side electrodes of two adjacent ones of the protective elements; and a plurality of third wires each connecting an upper-surface-side electrode of a respective one of the plurality of protective
    Type: Application
    Filed: March 5, 2021
    Publication date: June 24, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Tadaaki MIYATA, Hideaki TAKEDA
  • Publication number: 20210167576
    Abstract: A light source device includes: first and second laser diodes; a reflector having: first and second reflecting faces configured to reflect a portion of light from the respective first and second laser diodes and to transmit a portion of the light from the respective first and second laser diodes, and first and second exit faces configured to allow the portions of the light transmitted through the respective first and second reflecting faces to exit; and a photodetector including: first and second light receiving element configured to receive light exiting the first and second exit faces, respectively. The reflector is configured such that the light transmitted through the first reflecting face is hindered from exiting the second exit face and the light transmitted through the second reflecting face is hindered from exiting the first exit face.
    Type: Application
    Filed: December 1, 2020
    Publication date: June 3, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Yoshihiro KIMURA, Tadaaki MIYATA
  • Publication number: 20210119409
    Abstract: A light source device includes: a laser diode configured to emit laser light; a substrate directly or indirectly supporting the laser diode; a glass cap secured to the substrate and covering the laser diode, the glass cap comprising a front glass wall configured to transmit the laser light that is emitted from the laser diode, the front glass wall having an incident surface on which the laser light is incident and an emission surface from which the laser light exits; and a photodetector directly or indirectly supported by the substrate and located outside of the glass cap. The photodetector is configured to detect light reflected at the front glass wall and is transmitted through the glass cap.
    Type: Application
    Filed: October 1, 2020
    Publication date: April 22, 2021
    Applicant: NICHIA CORPORATION
    Inventor: Tadaaki MIYATA
  • Patent number: 10971891
    Abstract: A light source device includes at least one first wiring, a plurality of second wirings, a plurality of light emitting elements each having a lower-surface-side electrode connected to a respective one of the at least one first wiring, a plurality of protective elements each having a lower-surface-side electrode connected to a respective one of the plurality of second wirings each corresponding to a respective one of the plurality of light emitting elements, each of the plurality of protective elements connected to a respective one of the plurality of light emitting elements, a plurality of first wirings each connecting an upper-surface-side electrode of each of the plurality of light emitting elements and a respective one of the plurality of second wirings, a plurality of second wires each connecting the upper-surface-side electrodes of two adjacent ones of the protective elements; and a plurality of third wires each connecting an upper-surface-side electrode of a respective one of the plurality of protective
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: April 6, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Tadaaki Miyata, Hideaki Takeda
  • Publication number: 20210091532
    Abstract: A light source device includes: a laser diode; a substrate directly or indirectly supporting the laser diode; and a cap secured to the substrate and covering the laser diode. The cap includes a first glass portion configured to transmit laser light that is emitted from the laser diode, and a second glass portion. At least one of the first glass portion and the second glass portion includes an alkaline glass region. The first glass portion and the second glass portion are bonded together via an electrically conductive layer that is in contact with the alkaline glass region.
    Type: Application
    Filed: September 15, 2020
    Publication date: March 25, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Tadaaki MIYATA, Yoshihiro KIMURA
  • Patent number: 10958039
    Abstract: There is provided an optical module comprising a semiconductor laser element; and a planar lightwave circuit (PLC) in which a waveguide is formed on a substrate. A position of a light-emitting point of the semiconductor laser element is approximately aligned with a position of a core of the waveguide. In a plan view, a first line segment representing an emission surface of the semiconductor laser element and a second line segment corresponding to the first line segment and representing an incident surface of the waveguide are arranged oblique to each other, and the light-emitting point of the semiconductor laser element is disposed closer to an intersection point of an extension line of the first line segment and the second line segment or an extension line of the second line segment than a center of the first line segment.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 23, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata
  • Patent number: 10928596
    Abstract: A light source device includes: a package having an upward-facing surface and a surrounding inner lateral surface, a recess being defined by the upward-facing and inner lateral surfaces; a laser light source disposed on the upward-facing surface of the package; a cover closing the recess; a reflecting surface reflecting light emitted from the laser light source; and first and second lenses disposed on inner and outer surface sides of the cover, respectively, in an optical path region of the reflected light. One of the first and second lenses has a greater curvature in a major axis direction of a far field pattern of light emitted from the laser light source than in a minor axis direction of the far field pattern. The other of the first and second lenses has a greater curvature in the minor axis direction of the far field pattern than in the major axis direction.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: February 23, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata
  • 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
  • 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
  • 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
  • Patent number: 10700487
    Abstract: Provided is a light source device, including: a base member; a semiconductor laser disposed on the base member; a lateral wall portion formed so as to surround the semiconductor laser; a light-transmissive lid covering a gap surrounded by the base member and the lateral wall portion; and a connection member that airtightly connects an upper surface of the lateral wall portion and a lower surface of the lid over an entire perimeter of the lateral wall portion. The lateral wall portion has a reflecting surface which is an inside surface connected to an upper surface, the reflecting surface being inclined so that light emitted from the semiconductor laser is reflected toward the lid. A dielectric film is continuously formed on the reflecting surface and the upper surface. A height of the connection member is greater than a height of the dielectric film formed on the upper surface.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: June 30, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Tadaaki Miyata, Yoshihiro Kimura
  • Patent number: 10644477
    Abstract: There is provided a light source device comprising a substrate; a semiconductor laser placed on the substrate; a side wall portion formed so as to surround the semiconductor laser; and a cover being translucent, configured to cover a space surrounded by the substrate and the side wall portion, wherein the side wall portion includes a lower surface connected to an upper surface of the substrate over a whole periphery, an upper surface connected to a lower surface of the cover over a whole periphery, and inner side surfaces inclined so that the space expands from a lower surface side to an upper surface side of the side wall portion, at least a part of the inner side surfaces serving as a reflection surface for reflecting a beam emitted from the semiconductor laser toward the cover, and a connecting portion where an upper surface of the substrate and a lower surface of the side wall portion are in contact with each other via a connecting layer is provided in a region corresponding to an upper surface of the sid
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 5, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata
  • Patent number: 10628273
    Abstract: A system includes an active system that executes processing, a standby system that is able to perform at least one of scale-up and scale-down, and a control apparatus that controls system switching to set the standby system undergoing the scaled up or scaled down as a new active system.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 21, 2020
    Assignee: NEC CORPORATION
    Inventors: Yuki Yoshimura, Tadaaki Miyata, Hajime Zembutsu, Takuya Shoji, Hironori Magatani
  • Publication number: 20200096712
    Abstract: A light source device includes: a package having an upward-facing surface and a surrounding inner lateral surface, a recess being defined by the upward-facing and inner lateral surfaces; a laser light source disposed on the upward-facing surface of the package; a cover closing the recess; a reflecting surface reflecting light emitted from the laser light source; and first and second lenses disposed on inner and outer surface sides of the cover, respectively, in an optical path region of the reflected light. One of the first and second lenses has a greater curvature in a major axis direction of a far field pattern of light emitted from the laser light source than in a minor axis direction of the far field pattern. The other of the first and second lenses has a greater curvature in the minor axis direction of the far field pattern than in the major axis direction.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 26, 2020
    Applicant: Nichia Corporation
    Inventor: Tadaaki MIYATA
  • Patent number: 10578277
    Abstract: A light source device includes a package, one or more semiconductor lasers each having an emission surface, a light-transmissive cover, and an optical member. The package includes an inner bottom surface and inner lateral surfaces, and a recess defined by the inner bottom surface and the inner lateral surfaces and having an open end. The one or more semiconductor lasers are arranged on the inner bottom surface. The light-transmissive cover covers the open end of the recess. The optical member is arranged on an upper surface of the cover and is configured to mix light. The one or more semiconductor lasers are arranged so that their emission surfaces are respectively oblique to their adjacent inner lateral surface when viewed from above, and the inner lateral surface has a reflecting region arranged inclined with respect to the bottom surface.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: March 3, 2020
    Assignee: NICHIA CORPORATION
    Inventor: Tadaaki Miyata
  • Publication number: 20200036158
    Abstract: A light source device includes at least one first wiring, a plurality of second wirings, a plurality of light emitting elements each having a lower-surface-side electrode connected to a respective one of the at least one first wiring, a plurality of protective elements each having a lower-surface-side electrode connected to a respective one of the plurality of second wirings each corresponding to a respective one of the plurality of light emitting elements, each of the plurality of protective elements connected to a respective one of the plurality of light emitting elements, a plurality of first wirings each connecting an upper-surface-side electrode of each of the plurality of light emitting elements and a respective one of the plurality of second wirings, a plurality of second wires each connecting the upper-surface-side electrodes of two adjacent ones of the protective elements; and a plurality of third wires each connecting an upper-surface-side electrode of a respective one of the plurality of protective
    Type: Application
    Filed: July 29, 2019
    Publication date: January 30, 2020
    Applicant: Nichia Corporation
    Inventors: Tadaaki MIYATA, Hideaki TAKEDA
  • Publication number: 20190372302
    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: Application
    Filed: May 29, 2019
    Publication date: December 5, 2019
    Applicant: NICHIA CORPORATION
    Inventor: Tadaaki MIYATA
  • Patent number: 10439359
    Abstract: A light source device includes: a base member; a semiconductor laser mounted on an upper surface of the base member; a lateral wall portion having: a lower surface facing the upper surface of the base member and being a non-reflecting surface, and a reflecting surface that reflects light emitted from the semiconductor laser, is connected to the lower surface of the lateral wall portion at a lower end portion of the reflecting surface, and is inclined with respect to the upper surface of the base member; a first bonding film that is a metal film disposed in a region on the upper surface of the base member facing the lower surface of the lateral wall portion; a second bonding film that is a metal film disposed on the lower surface of the lateral wall portion; and a metal bonding member fuse-bonded to the first bonding film and the second bonding film to each other.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: October 8, 2019
    Assignee: NICHIA CORPORATION
    Inventors: Tadaaki Miyata, Yoshihiro Kimura