Patents by Inventor Tadataka Edamura

Tadataka Edamura 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: 20220337033
    Abstract: An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; and a lens. The diffraction grating portion includes a plurality of lattice grooves arranged in a first direction and each of the plurality of lattice grooves extends in a second direction perpendicular to the first direction. The MEMS diffraction grating is disposed such that a normal line of the diffraction grating portion is inclined with respect to an end surface and the first direction is along a lamination direction of a laminated structure when viewed in a direction perpendicular to the end surface. A length of the diffraction grating portion in the first direction exceeds a length of the diffraction grating portion in the second direction.
    Type: Application
    Filed: February 18, 2022
    Publication date: October 20, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Tadataka EDAMURA, Naota AKIKUSA
  • Publication number: 20220271491
    Abstract: An external resonance-type laser module includes: a quantum cascade laser; a MEMS diffraction grating including a movable portion capable of swinging around an axis and a diffraction grating portion formed on the movable portion; a lens; a magnet; and a yoke. The MEMS diffraction grating includes a pair of coils respectively disposed on one side and the other side with respect to the axis when viewed in a normal direction parallel to a normal line of the diffraction grating portion, and each of the pair of coils includes an inside part extending along the axis. A recess portion is formed in the magnet, and at least a part of the recess portion overlaps the inside part when viewed in the normal direction.
    Type: Application
    Filed: February 18, 2022
    Publication date: August 25, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadataka EDAMURA, Atsushi SUGIYAMA, Naota AKIKUSA
  • Publication number: 20220271505
    Abstract: The laser module includes a QCL element, a MEMS diffraction grating, a lens holder for holding a lens disposed between the QCL element and the MEMS diffraction grating, and a package. The package includes a bottom wall, a side wall erected on the bottom wall and formed in an annular shape so as to surround a region in which the QCL element is accommodated, and a top wall closing an opening of the side wall on a side opposite to a side where the bottom wall is disposed. The top wall faces the bottom wall in a direction orthogonal to the optical axis direction of the lens, and the distance between the top wall and a surface of the lens holder on a side where the top wall is disposed is smaller than a thickness of the lens holder along the optical axis direction of the lens.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 25, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Takahide OCHIAI, Tadataka EDAMURA, Naota AKIKUSA
  • Publication number: 20220271504
    Abstract: The laser module includes a QCL element, a MEMS diffraction grating, a first lens holder disposed on a side opposite to a side on which the MEMS diffraction grating is disposed with respect to the QCL element, a second lens holder disposed between the QCL element and the MEMS diffraction grating, a package, an electrode terminal disposed along an inner wall surface of the package, and a wire for electrically connecting the electrode terminal and the QCL element. An end portion of the wire on a side where the QCL element is disposed is disposed at a position between the first lens holder and the second lens holder when viewed from a direction orthogonal to a facing direction in which the first lens holder and the second lens holder face each other.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 25, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Tadataka EDAMURA, Takahide OCHIAI, Naota AKIKUSA
  • Publication number: 20220271506
    Abstract: The laser module includes a QCL element, a MEMS diffraction grating, a lens holder holding a lens disposed between the QCL element and the MEMS diffraction grating, a package, an electrode terminal disposed along an inner wall surface of the package, and a wire for electrically connecting the electrode terminal and a coil. The top wall of the package faces the bottom wall of the package in a direction orthogonal to the optical axis direction of the lens. The MEMS diffraction grating includes an electrode pad electrically connected to the coil. The electrode pad is connected to the electrode terminal via the wire. A height position of the electrode pad with respect to the bottom wall is equal to or higher than a height position of the electrode terminal with respect to the bottom wall.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 25, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Takahide OCHIAI, Tadataka EDAMURA, Naota AKIKUSA
  • Publication number: 20220037849
    Abstract: The light-emitting element of an embodiment outputs a clear optical image while suppressing light output efficiency reduction, and includes a substrate, a light-emitting unit, and a bonding layer. The light-emitting unit has a semiconductor stack, including a phase modulation layer, between first and second electrodes. The phase modulation layer has a base layer and modified refractive index regions, and includes a first region having a size including the second electrode, and a second region. Each gravity center of the second region's modified refractive index region is arranged by an array condition. The light from the stack is a single beam, and regarding a first distance from the substrate to the stack's front surface and a second distance from the substrate to the stack's back surface, a variation amount of the first distance along a direction on the substrate is smaller than a variation amount of the second distance.
    Type: Application
    Filed: December 11, 2019
    Publication date: February 3, 2022
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Akio ITO, Yoshitaka KUROSAKA, Masahiro HITAKA, Kazuyoshi HIROSE, Tadataka EDAMURA
  • Patent number: 11075315
    Abstract: An optical semiconductor element includes a semiconductor substrate, a first laminated structure provided on a front surface of the semiconductor substrate, and a second laminated structure provided on the front surface of the semiconductor substrate, the first laminated structure includes a first quantum cascade region, the second laminated structure includes a dummy region having the same layer structure as the first quantum cascade region, a second quantum cascade region provided on the front surface of the semiconductor substrate via the dummy region, and one of the first quantum cascade region and the second quantum cascade region is a quantum cascade laser, and the other of the first quantum cascade region and the second quantum cascade region is a quantum cascade detector.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: July 27, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Masahiro Hitaka, Akio Ito, Tatsuo Dougakiuchi, Kazuue Fujita, Tadataka Edamura
  • Patent number: 11067728
    Abstract: A movable diffraction grating includes; a supporting portion; a movable portion which includes a first surface and is swingably connected with the supporting portion; a resin layer which is provided on the first surface and includes a diffraction grating pattern formed therein; a reflection layer which is provided on the resin layer an along the diffraction grating pattern and is formed of metal; and a stress regulation portion inducing stress on the movable portion, and the first surface is caused to bend concavely by stress.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: July 20, 2021
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tadataka Edamura, Atsushi Sugiyama, Tatsuo Dougakiuchi
  • Publication number: 20210181518
    Abstract: A light source module includes a light source; an optical fiber configured to guide light output from the light source; a pair of holding members configured to hold both ends of a first portion of the optical fiber such that the first portion extends linearly; a first vibrator configured to vibrate the first portion along a first direction intersecting an extending direction of the first portion; and a second vibrator configured to vibrate the first portion along a second direction intersecting the extending direction and differing from the first direction.
    Type: Application
    Filed: December 1, 2020
    Publication date: June 17, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takahide OCHIAI, Naota AKIKUSA, Tatsuo DOUGAKIUCHI, Tadataka EDAMURA
  • Publication number: 20210057875
    Abstract: A sintered body of the present invention includes cerium oxide and cerium fluoride or yttrium fluoride.
    Type: Application
    Filed: August 5, 2020
    Publication date: February 25, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Atsushi SUGIYAMA, Akio ITO, Tadataka EDAMURA
  • Patent number: 10673002
    Abstract: Organic photoelectric conversion element has a first electrode, a photoelectric conversion layer, and a second electrode. The photoelectric conversion layer has a first organic layer that contains a first organic semiconductor containing principally a p-type organic semiconductor, a second organic layer that contains a second organic semiconductor containing principally an n-type organic semiconductor, and an intermediate layer that contains the first organic semiconductor and the second organic semiconductor. The second organic layer is disposed at a side of the second electrode relative to the first organic layer. The intermediate layer is between the first organic layer and the second organic layer and reaches each of these layers. The thickness of the second organic layer is greater than the sum of the thicknesses of the first organic layer and intermediate layer.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: June 2, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Shigeo Hara, Wataru Akahori, Takahiko Yamanaka, Tadataka Edamura
  • Patent number: 10591413
    Abstract: A fluid analyzer includes a substrate, a quantum cascade laser formed on a surface of the substrate and including a first light-emitting surface and a second light-emitting surface facing each other in a predetermined direction parallel to the surface, a quantum cascade detector formed on the surface and including the same layer structure as the quantum cascade laser and a light incident surface facing the second light-emitting surface in the predetermined direction, and an optical element disposed on an optical path of light emitted from the first light-emitting surface across an inspection region in which a fluid to be analyzed is to be disposed and reflecting the light to feed the light back to the first light-emitting surface.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: March 17, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Kazuue Fujita, Tadataka Edamura
  • Patent number: D892656
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 11, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D892657
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: August 11, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D899279
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 20, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D899284
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: October 20, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D960006
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: August 9, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D960007
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: August 9, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D960008
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: August 9, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura
  • Patent number: D960009
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: August 9, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Tatsuo Dougakiuchi, Akio Ito, Masahiro Hitaka, Tadataka Edamura