Patents by Inventor Eiichiro OKAHISA

Eiichiro OKAHISA 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: 11892155
    Abstract: A light-emitting device includes: a substrate including a base and a side wall; a plurality of semiconductor laser elements arrayed in a first direction on an upper surface of the base; a sealing member fixed to the substrate, wherein the sealing member and the substrate define a sealed space in which the semiconductor laser element is located; and a lens array disposed above the sealing member, the lens array including a plurality of lens sections arrayed in the first direction. In the lens array, a maximum outer diameter of each lens sections is 1.25 times or more than an inter-vertex distance between adjacent ones of the lens sections in the first direction.
    Type: Grant
    Filed: April 11, 2023
    Date of Patent: February 6, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Kiyota, Kazuma Kozuru, Eiichiro Okahisa
  • Publication number: 20240030676
    Abstract: A plurality of light emitting devices include first and second light-emitting devices. The first light-emitting device includes: a first package, first semiconductor laser elements sealed in the first package, and a first lens member having lens surfaces. The second light-emitting device includes a second package having a same outer shape as the first package, one or more second semiconductor laser elements sealed in the second package, and a second lens member having one or more lens surfaces. The first semiconductor laser elements include a semiconductor laser element to emit first light having a color different from light emitted from any of the second semiconductor laser elements. A curvature of the lens surface of the first lens member to transmit the first light is the same as a curvature of one of the lens surfaces of the second lens member.
    Type: Application
    Filed: July 20, 2023
    Publication date: January 25, 2024
    Inventors: Kiyoshi ENOMOTO, Eiichiro OKAHISA
  • Publication number: 20230324633
    Abstract: A light source device, including: a reflective member including a plurality of reflective surfaces including a first reflective surface and a second reflective surface, and one or more transmissive surfaces including a first transmissive surface that connects between the first reflective surface and the second reflective surface; a plurality of light-emitting elements including a first light-emitting element emitting first light that travels in a direction in which the reflective member is arranged to be incident on the first reflective surface, and a second light-emitting element emitting second light that travels in a direction in which the reflective member is arranged to be incident on the second reflective surface; and a first photodetector having a first light-receiving surface on which the first light that travels in the direction in which the reflective member is arranged and is transmitted through the first transmissive surface is irradiated.
    Type: Application
    Filed: August 6, 2021
    Publication date: October 12, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Tatsuya KANAZAWA, Eiichiro OKAHISA
  • Publication number: 20230268712
    Abstract: A method of manufacturing a semiconductor device includes: preparing a bottom plate having an upper surface and a lower surface, wherein the lower surface of the bottom plate comprises a reference part and one or more inclined surfaces that are inclined with respect to the reference part, an upper portion of the one or more inclined surfaces being positioned above the reference part, and wherein a thickness of the bottom plate at the reference part is greater than a thickness of the bottom plate at the upper portion of the one or more inclined surfaces; joining a frame member to the bottom plate, at least a part of the frame member being disposed directly above the one or more inclined surfaces, a linear expansion coefficient of the frame member being smaller than a linear expansion coefficient of the bottom plate; and fixing a semiconductor element to the bottom plate.
    Type: Application
    Filed: May 1, 2023
    Publication date: August 24, 2023
    Applicants: NICHIA CORPORATION, SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventors: Takuya Hashimoto, Eiichiro Okahisa, Katsuya Nakazawa, Shigeru Matsushita, Sumio Uehara, Suguru Kobayashi, Kazuhito Yumoto
  • Publication number: 20230243484
    Abstract: A light-emitting device includes: a substrate including a base and a side wall; a plurality of semiconductor laser elements arrayed in a first direction on an upper surface of the base; a sealing member fixed to the substrate, wherein the sealing member and the substrate define a sealed space in which the semiconductor laser element is located; and a lens array disposed above the sealing member, the lens array including a plurality of lens sections arrayed in the first direction. In the lens array, a maximum outer diameter of each lens sections is 1.25 times or more than an inter-vertex distance between adjacent ones of the lens sections in the first direction.
    Type: Application
    Filed: April 11, 2023
    Publication date: August 3, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Seiji KIYOTA, Kazuma KOZURU, Eiichiro OKAHISA
  • Publication number: 20230198223
    Abstract: A semiconductor device includes: a package including: a heat dissipating body comprising a metal, an insulting part surrounding the heat dissipating body, one or more semiconductor laser elements disposed on the heat dissipating body, at least one outer metal layer that is located on a lower surface of the insulting part and is spaced from a lower surface of the heat dissipating body; a mounting substrate including: at least one first metal pattern located at an upper surface of the mounting substrate, and a second metal pattern located at the upper surface of the mounting substrate; at least one first bonding member located between the at least one outer metal layer and the first metal pattern; and a second bonding member located between the lower surface of the heat dissipating body and the second metal pattern, wherein the second bonding member comprises a metal material.
    Type: Application
    Filed: January 13, 2023
    Publication date: June 22, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Shohei Itonaga, Eiichiro Okahisa
  • Patent number: 11677211
    Abstract: A semiconductor device includes: a bottom plate having an upper surface and a lower surface, wherein the upper surface comprises an outer peripheral part and an inside part that is enclosed by the outer peripheral part and that protrudes more upward than the outer peripheral part; a frame joined to the upper surface of the bottom plate and comprising a first through-hole that penetrates the frame; a plate jointed to the outside or inside surface of the frame, the plate comprising a second through-hole that penetrates the plate in a same direction as that of the first through-hole, a thickness of the plate being greater than a thickness of the frame; a lead terminal inserted into the first through-hole and the second through-hole; a fixing member provided in the second through-hole and fixing the lead terminal; and a semiconductor element fixed to the inside part.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: June 13, 2023
    Assignees: NICHIA CORPORATION, SHINIKO ELECTRIC INDUSTRIES CO., LTD.
    Inventors: Takuya Hashimoto, Eiichiro Okahisa, Katsuya Nakazawa, Shigeru Matsushita, Sumio Uehara, Suguru Kobayashi, Kazuhito Yumoto
  • Patent number: 11655958
    Abstract: A light-emitting device includes: a substrate comprising a base; a semiconductor laser element disposed on an upper surface of the base; a sealing member located above the base and fixed to the substrate, wherein the sealing member and the substrate define a sealed space in which the semiconductor laser element is located; and a lens member fixed to the sealing member by adhesive, the lens member comprising a lens section through which light emitted from the semiconductor laser element passes. A space between the sealing member and the lens member is open to an area outside the light-emitting device.
    Type: Grant
    Filed: July 13, 2022
    Date of Patent: May 23, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Kiyota, Kazuma Kozuru, Eiichiro Okahisa
  • Publication number: 20230108294
    Abstract: A light-emitting module includes a wiring substrate, first and second bases, three or more first submounts, four or more second submounts, three or more first light-emitting elements, and four or more second light-emitting elements. The first and second bases are bonded to and electrically connected to the wiring substrate. The first submounts are arranged side by side along a first alignment direction on the first base, and the second submounts are arranged side by side along a second alignment direction on the second base. A number of the second submounts is greater than a number of the first submounts by one or more. The first and second light-emitting elements are arranged respectively on the first and second submounts. A length of each of the first submounts in the first alignment direction is greater than a length of each of the second submounts in the second alignment direction.
    Type: Application
    Filed: September 16, 2022
    Publication date: April 6, 2023
    Inventors: Kiyoshi ENOMOTO, Eiichiro OKAHISA, Shota TAKASE, Kazuma KOZURU
  • Patent number: 11581699
    Abstract: A semiconductor device includes: a package including: a lower surface, at least one first metal surface at an outer periphery of the lower surface, and at least one second metal surface at the lower surface at a location different from the at least one first metal surface; a mounting substrate disposed below the package and including: an upper surface, at least one first metal pattern disposed at the upper surface below the at least one first metal surface, and at least one second metal pattern disposed at the upper surface below the at least one second metal surface; a first bonding member containing a metal material and bonding the at least one first metal surface and the at least one first metal pattern; and a second bonding member containing a metal material and bonding the at least one second metal surface and the at least one second metal pattern.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: February 14, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Shohei Itonaga, Eiichiro Okahisa
  • Publication number: 20220416500
    Abstract: A laser package includes: a substrate having an upper surface; a first laser element disposed on the substrate and configured to emit light in a first direction; a first optical member having a lower surface bonded to the upper surface of the substrate, a reflecting surface inclined relative to the lower surface and configured to reflect the light, and an upper surface connected to the reflecting surface, the upper surface of the first optical member being located farther in the first direction than the reflecting surface; and a bonding material disposed on the upper surface of the substrate. The first optical member is bonded to the substrate via the bonding material. In a top view, a portion of the bonding material protrudes from three sides of the upper surface of the first optical member.
    Type: Application
    Filed: August 31, 2022
    Publication date: December 29, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Masatoshi NAKAGAKI, Kazuma KOZURU, Eiichiro OKAHISA
  • Publication number: 20220349551
    Abstract: A light-emitting device includes: a substrate comprising a base; a semiconductor laser element disposed on an upper surface of the base; a sealing member located above the base and fixed to the substrate, wherein the sealing member and the substrate define a sealed space in which the semiconductor laser element is located; and a lens member fixed to the sealing member by adhesive, the lens member comprising a lens section through which light emitted from the semiconductor laser element passes. A space between the sealing member and the lens member is open to an area outside the light-emitting device.
    Type: Application
    Filed: July 13, 2022
    Publication date: November 3, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Seiji KIYOTA, Kazuma KOZURU, Eiichiro OKAHISA
  • Publication number: 20220302672
    Abstract: A base member includes a lower portion and a lateral portion. The lateral portion includes a first lateral surface, a second lateral surface not adjacent to the first lateral surface, and a third lateral surface adjacent to the first lateral surface, and first to third step portions. The first step portion is arranged inward of the first lateral surface along a portion or an entirety of the first lateral surface, and has a first upper surface provided with a wiring pattern. The second step portion is arranged inward of the second lateral surface along a portion or an entirety of the second lateral surface, and has a second upper surface provided with a wiring pattern. The third step portion is arranged inward of the third lateral surface along only a portion of the third lateral surface, and has a third upper surface provided with a wiring pattern.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 22, 2022
    Inventors: Kiyoshi ENOMOTO, Eiichiro OKAHISA
  • Patent number: 11428382
    Abstract: A light-emitting device includes: a substrate including a base and a side wall; a plurality of semiconductor laser elements disposed in a row direction and in a column direction on an upper surface of the base; a plurality of pairs of wires that penetrate the side wall in the row direction; and a lens array fixed to the substrate, the lens array comprising a plurality of lens sections disposed in the row direction and in the column direction above the plurality of semiconductor laser elements. Each laser beam that is emitted from the semiconductor laser elements and is incident on a light incident surface of the lens array has a beam shape with a greater width in the column direction than in the row direction.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: August 30, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Kiyota, Kazuma Kozuru, Eiichiro Okahisa
  • Publication number: 20220231484
    Abstract: A light emitting device includes: a base having a mounting face including a disposition region, a plurality of first wirings, and a plurality of second wirings; a plurality of light emitting elements, including one or more first light emitting elements, one or more second light emitting elements, and one or more third light emitting elements, disposed in two rows and N columns (N?2) in the disposition region; one or more relay members, including one or more first relay members disposed in the region between the two rows of the light emitting elements; a plurality of first light emitting element wirings for electrically serially connecting the one or more first light emitting elements; a plurality of second light emitting element wirings for electrically serially connecting the one or more second light emitting elements; and a plurality of third light emitting element wirings for electrically serially connecting the one or more third light emitting elements.
    Type: Application
    Filed: January 20, 2022
    Publication date: July 21, 2022
    Applicant: NICHIA CORPORATION
    Inventors: Toshiya IGATA, Eiichiro OKAHISA, Takeshi IMAI
  • Patent number: 11367994
    Abstract: A light emitting device includes: a base including: a main body, and a frame disposed on an upper surface of the main body; one or more laser elements disposed on the upper surface of the main body and positioned inward of the frame; and a cover including: a support member that is fixed to an upper surface of the frame and that has an opening inside the frame, and a light transmissive portion that is fixed to the support member and that is disposed so as to close the opening. A first interface, between the light transmissive portion and the support member, is located inward of and lower than a second interface, between the support member and the frame. A portion of the support member that extends at least from an outermost end of the first interface to an innermost end of the second interface has a constant thickness.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: June 21, 2022
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Hashimoto, Eiichiro Okahisa
  • Patent number: 11149917
    Abstract: A light-emitting device includes a substrate; a lens array having a plurality of lens sections in a matrix pattern; and a plurality of semiconductor laser elements disposed on the substrate. Each of the semiconductor laser elements emits a respective laser beam, each laser beam having a beam shape with a greater width in a column direction than in a row direction on a light incident surface of each respective lens section. The lens sections have an inter-vertex distance in the row direction that is smaller than both (i) a maximum outer diameter of each of the lens sections, and (ii) an inter-vertex distance in the column direction. A curvature of the lens sections in the row direction is the same as a curvature of the lens sections in the column direction.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: October 19, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Kiyota, Kazuma Kozuru, Eiichiro Okahisa
  • Patent number: 11118754
    Abstract: A light-emitting device includes a substrate; a lens array having a plurality of lens sections in a matrix pattern; and a plurality of semiconductor laser elements disposed on the substrate. Each of the semiconductor laser elements emits a respective laser beam, each laser beam having a beam shape with a greater width in a column direction than in a row direction on a light incident surface of each respective lens section. The lens sections have an inter-vertex distance in the row direction that is smaller than both (i) a maximum outer diameter of each of the lens sections, and (ii) an inter-vertex distance in the column direction. A curvature of the lens sections in the row direction is the same as a curvature of the lens sections in the column direction.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 14, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Seiji Kiyota, Kazuma Kozuru, Eiichiro Okahisa
  • Publication number: 20210265808
    Abstract: A semiconductor device includes: a package including: a lower surface, at least one first metal surface at an outer periphery of the lower surface, and at least one second metal surface at the lower surface at a location different from the at least one first metal surface; a mounting substrate disposed below the package and including: an upper surface, at least one first metal pattern disposed at the upper surface below the at least one first metal surface, and at least one second metal pattern disposed at the upper surface below the at least one second metal surface; a first bonding member containing a metal material and bonding the at least one first metal surface and the at least one first metal pattern; and a second bonding member containing a metal material and bonding the at least one second metal surface and the at least one second metal pattern.
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Applicant: NICHIA CORPORATION
    Inventors: Shohei Itonaga, Eiichiro Okahisa
  • Patent number: RE49645
    Abstract: A method of manufacturing a light-emitting device includes providing a base body including a base section; fixing a plurality of semiconductor laser elements on an upper surface of the base section; and fixing an optical member to the base body, the optical member including a plurality of lens sections, and a non-lens section disposed at a periphery of the plurality of lens sections in a top view. In the step of fixing the optical member: the optical member is arranged above the base body; (i) an inclination and a height of the optical member are adjusted after interposing an adhesive between the base body and the non-lens section, or (ii) an adhesive is interposed between the base body and the non-lens section after adjusting the inclination and the height of the optical member; and subsequently, the adhesive is cured to fix the optical member to the base body.
    Type: Grant
    Filed: January 11, 2021
    Date of Patent: September 5, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Soichiro Miura, Seiji Kiyota, Eiichiro Okahisa