Patents by Inventor Tsuyoshi OKAHISA

Tsuyoshi 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).

  • Publication number: 20240060619
    Abstract: A light source device includes: a plurality of light emitting parts arranged in a matrix, each having an upper surface that includes a light emitting surface, each of the light emitting parts being configured to emit light from the light emitting surfaces and at least one of the light emitting parts being configured to be individually turned on, wherein: each of the light emitting parts includes: a light emitting element, a wavelength conversion member covering the upper surface of the light emitting element, and a light-reflective member covering lateral surfaces of the light emitting element wavelength conversion member, and the light-reflective members of the light-emitting parts are directly adjacent to each other; and an optical lens located above the light emitting surfaces of the light emitting parts, the optical lens including: a first surface including a plurality of incident regions, and a second surface including a plurality of emission regions.
    Type: Application
    Filed: November 1, 2023
    Publication date: February 22, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Norimasa YOSHIDA, Tsuyoshi OKAHISA
  • Publication number: 20240044473
    Abstract: A light source device includes: a plurality of independently operable light emitting devices; a first lens having a lower face that faces the light emitting devices, and an upper face opposite the lower face. The lower face of the first lens includes: an entrance part located in a center of the lower face where light from the light emitting devices enters, and a light guide part located outward of the entrance part and configured to guide the light entering the entrance part. The upper face of the first lens comprises a plurality of annular protruding portions.
    Type: Application
    Filed: October 19, 2023
    Publication date: February 8, 2024
    Applicant: NICHIA CORPORATION
    Inventors: Norimasa YOSHIDA, Tsuyoshi OKAHISA
  • Patent number: 11894497
    Abstract: A method of manufacturing a covering member includes: providing a first light-reflective member comprising a through-hole, the through-hole having first and second openings; arranging a light-transmissive resin containing a wavelength-conversion material within the through-hole; distributing the wavelength-conversion material predominantly on a side of the first opening of the through-hole within the light-transmissive resin; and after the step of distributing the wavelength-conversion material, removing a portion of the light-transmissive resin from a side of the second opening of the through-hole.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: February 6, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Tadao Hayashi, Teruhito Azuma, Suguru Beppu, Kunihiro Izuno, Tsuyoshi Okahisa
  • Publication number: 20240035632
    Abstract: A light source includes a plurality of light emitting elements, a light blocking member, and a plurality of light-transmissive members. The light emitting elements are arranged in a matrix to form a rectangular shape as a whole in a plan view. The light blocking member covers lateral surfaces of the light emitting elements with an upper surface of each of the light emitting elements being exposed from the light blocking member. The light-transmissive members arranged in a matrix to form a rectangular shape as a whole in the plan view. The light-transmissive members include a plurality of first light-transmissive members respectively disposed on the light emitting elements, and a plurality of second light-transmissive members disposed on the light blocking member in an outer periphery region located outwardly of the light emitting elements in the plan view.
    Type: Application
    Filed: October 5, 2023
    Publication date: February 1, 2024
    Inventors: Shintaro NOMA, Tsuyoshi OKAHISA
  • Publication number: 20240030379
    Abstract: A light source device includes a substrate and a light source. The light source includes a first light emission unit, a plurality of second light emission units, and a plurality of third light emission units arranged two-dimensionally on the substrate. The first light emission unit is arranged at a center among the light emission units, and includes a first light emission element having a first light emission face. The second light emission units surround the first light emission unit, and include a plurality of second light emission elements, respectively, each having a second light emission face. The third light emission units surround the second light emission units, and include a plurality of third light emission elements, respectively, each having a third light emission faces. The first light emission face and the second light emission faces all have the same areas. The third light emission faces have different areas.
    Type: Application
    Filed: September 30, 2023
    Publication date: January 25, 2024
    Inventors: Shintaro NOMA, Tsuyoshi OKAHISA
  • Publication number: 20240030378
    Abstract: A light source device includes a substrate, a light source, a liquid crystal shutter, and a lens. The light source is supported by the substrate. The light source includes a plurality of light emission units two-dimensionally arranged. The liquid crystal shutter is disposed on the light source. The lens is disposed on the liquid crystal shutter. The liquid crystal shutter is configured to perform independent ON/OFF control in two or more regions corresponding to at least one of the light emission units.
    Type: Application
    Filed: September 29, 2023
    Publication date: January 25, 2024
    Inventors: Tsuyoshi OKAHISA, Shintaro NOMA
  • Patent number: 11867390
    Abstract: A light source device includes: a plurality of independently operable light emitting devices; a first lens facing the light emitting devices; and a second lens facing the first lens. A lower face of the first lens facing the light emitting devices includes: an entrance part located in a center where light from the light emitting devices enters, and a light guide part located outward of the entrance part and configured to guide light entering the entrance part. A lower face of the second lens facing the first lens includes a Fresnel lens face including a plurality of annular protruding portions.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: January 9, 2024
    Assignee: NICHIA CORPORATION
    Inventors: Norimasa Yoshida, Tsuyoshi Okahisa
  • Patent number: 11846412
    Abstract: A light source device includes: light emitting parts arranged in a matrix, each having an upper surface that includes a light emitting surface, each of the light emitting parts being configured to emit light from the light emitting surfaces and at least one of the light emitting parts being configured to be individually turned on, wherein each of the light emitting parts includes a light emitting element, a wavelength conversion member covering the upper surface of the light emitting element, and a light-reflective member covering lateral surfaces of the light emitting element and lateral surfaces of the wavelength conversion member, and wherein the light-reflective members of the light-emitting parts are directly adjacent to each other; and an optical lens located above the light emitting surfaces of the light emitting parts. Sizes of the light emitting surfaces of at least some of the light emitting parts are different from each other.
    Type: Grant
    Filed: April 3, 2023
    Date of Patent: December 19, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Norimasa Yoshida, Tsuyoshi Okahisa
  • Publication number: 20230400169
    Abstract: A light source device includes: a light emitting device having an upper face including a light emission face; and a first lens having a lower face that faces the light emitting device, and an upper face opposite the lower face. The lower face of the first lens includes: an entrance part located in a center of the lower face where light from the light emitting device enters, and a light guide part located outward of the entrance part and configured to guide the light entering the entrance part. The upper face of the first lens includes a plurality of annular protruding portions.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 14, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Norimasa YOSHIDA, Tsuyoshi OKAHISA
  • Publication number: 20230400167
    Abstract: A light emitting device includes a light emitting element and a lens, The lens includes a cover part and a light-shielding part. The cover part includes a lens part, a connection part, and a flange part which are formed of a thermosetting first resin and continuous to one another. The light-shielding part covers an outer lateral side of the connection part and is formed of a second resin having a greater light-absorptance or a greater light-reflectance than the first resin. The lens part is disposed at a location that allows light from the light emitting element to be transmitted through the lens part.
    Type: Application
    Filed: August 29, 2023
    Publication date: December 14, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Tsuyoshi OKAHISA, Toshiyuki FUJII
  • Patent number: 11828453
    Abstract: A light source device includes: a plurality of independently operable light emitting devices; a first lens facing the light emitting devices; and a second lens facing the first lens. A lower face of the first lens facing the light emitting devices includes: an entrance part located in a center where light from the light emitting devices enters, and a light guide part located outward of the entrance part and configured to guide light entering the entrance part. A lower face of the second lens facing the first lens includes a Fresnel lens face including a plurality of annular protruding portions.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: November 28, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Norimasa Yoshida, Tsuyoshi Okahisa
  • Patent number: 11815231
    Abstract: A light source includes a plurality of light emitting elements, a light blocking member and a plurality of light-transmissive members. The light blocking member collectively supports the plurality of light emitting elements with the light blocking member being disposed in regions between the plurality of light emitting elements and in an outer periphery region located outwardly of the plurality of light emitting elements in a plan view. An upper surface of each of the plurality of the light emitting elements is exposed from the light blocking member. The plurality of light-transmissive members include a plurality of first light-transmissive members respectively disposed on the plurality of light emitting elements, and a second light-transmissive member disposed on the light blocking member in the outer periphery region.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: November 14, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Shintaro Noma, Tsuyoshi Okahisa
  • Patent number: 11810997
    Abstract: A light source includes a plurality of light emitting elements one-dimensionally or two-dimensionally arranged, a plurality of wavelength conversion members, a plurality of first light diffusing members, a light transmitting member, a second light diffusing member, and a light shielding member. Each of the light emitting elements has a light emission surface and an electrode surface. Each of the wavelength conversion members is disposed on the light emission surface of a respective one of the light emitting elements. Each of the first light diffusing members is disposed on a respective one of the wavelength conversion members. The light transmitting member continuously covers the first light diffusing members. The second light diffusing member is disposed on the light transmitting member. The light shielding member covers lateral surfaces of the light emitting elements, lateral surfaces of the wavelength conversion members, and lateral surfaces of the first light diffusing members.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: November 7, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Tsuyoshi Okahisa, Shintaro Noma
  • Patent number: 11810998
    Abstract: A light source includes first and second light emission units and a light shielding member. The light emission units each includes a light emitting element having a light emission face, a wavelength conversion member disposed on the light emission face, and a light transmissive member disposed on the wavelength conversion member. The light shielding member covers a lateral face of the light emitting element and a lateral face of the wavelength conversion member. The lateral face of the light transmissive member is at least partially exposed from the light shielding member. The second light emission unit is more distant from a center of a predetermined region than the first light emission unit. The light emission face of the light emitting element in the second light emission unit is larger than the light emission face of the light emitting element in the first light emission unit.
    Type: Grant
    Filed: December 6, 2022
    Date of Patent: November 7, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Shintaro Noma, Tsuyoshi Okahisa
  • Patent number: 11802678
    Abstract: A light source device includes: a light emitting device having an upper face comprising a light emission face; a first lens facing the light emitting device; and a second lens facing the first lens. A lower face of the first lens facing the light emitting device includes an entrance part provided in a center of the lower face where light from the light emitting device enters, and a light guide part provided on an outside of the entrance part to guide the light entering the entrance part. A lower face of the second lens facing the first lens includes a Fresnel lens face composed of a plurality of annular protruding portions.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: October 31, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Norimasa Yoshida, Tsuyoshi Okahisa
  • Patent number: 11788708
    Abstract: A lens includes a cover part and a light-shielding part. The cover part includes a lens part, a connection part, and a flange part which are formed of a thermosetting first resin and continuous to one another. The light-shielding part covers an outer lateral side of the connection part and is formed of a second resin having a greater light-absorptance or a greater light-reflectance than the first resin.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: October 17, 2023
    Assignee: NICHIA CORPORATION
    Inventors: Tsuyoshi Okahisa, Toshiyuki Fujii
  • Publication number: 20230251452
    Abstract: A lens includes a cover part and an interposing member formed of a light-reflecting material. The cover part includes a lens part having a lateral side, a connection part constituting a lateral side wall extending from the lateral side, and a flange part having a lower surface disposed below the lateral side wall. The interposing member has an upper surface and an inner lateral surface. The upper surface is disposed on the lower surface of the flange part. The lens part and the interposing member define a recess having an opening facing downward. The lens part defines a bottom surface of the recess. The inner lateral surface defines a lateral surface of the recess, which defines the opening of the recess. The flange part extends outward from the opening. The lens part has a convex lens and a light-emitting surface with projections outward from the convex lens.
    Type: Application
    Filed: April 5, 2023
    Publication date: August 10, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Tsuyoshi OKAHISA, Toshiyuki FUJII, Tomohisa KISHIMOTO
  • Publication number: 20230243483
    Abstract: A light source device includes: light emitting parts arranged in a matrix, each having an upper surface that includes a light emitting surface, each of the light emitting parts being configured to emit light from the light emitting surfaces and at least one of the light emitting parts being configured to be individually turned on, wherein each of the light emitting parts includes a light emitting element, a wavelength conversion member covering the upper surface of the light emitting element, and a light-reflective member covering lateral surfaces of the light emitting element and lateral surfaces of the wavelength conversion member, and wherein the light-reflective members of the light-emitting parts are directly adjacent to each other; and an optical lens located above the light emitting surfaces of the light emitting parts. Sizes of the light emitting surfaces of at least some of the light emitting parts are different from each other.
    Type: Application
    Filed: April 3, 2023
    Publication date: August 3, 2023
    Applicant: NICHIA CORPORATION
    Inventors: Norimasa YOSHIDA, Tsuyoshi OKAHISA
  • Publication number: 20230228396
    Abstract: A light source device includes: a plurality of light source parts configured to emit light. Each of the light source parts comprises a light-emitting element and a light guiding member. the plurality of light-emitting elements are configured to emit light passing through the light guiding members from the light source parts in an array in an irradiated region. One or more of the plurality of light source parts are arranged in a placement region in a different arrangement from an arrangement of the light in the irradiated region.
    Type: Application
    Filed: March 27, 2023
    Publication date: July 20, 2023
    Applicant: NICHIA CORPORATION
    Inventor: Tsuyoshi OKAHISA
  • Publication number: 20230228401
    Abstract: A light source device includes: a plurality of light source parts configured to emit light, in which each of the light source parts includes a light-emitting element and a light guiding member, the plurality of light source parts are disposed in a circular, planar-shaped placement region and are arranged in (i) a combination of at least a rectangular grid and a triangular grid or (ii) a concentric circular pattern, and the plurality of light source parts are configured to emit the light in a matrix pattern in an irradiated region.
    Type: Application
    Filed: March 23, 2023
    Publication date: July 20, 2023
    Applicant: NICHIA CORPORATION
    Inventor: Tsuyoshi OKAHISA