Patents by Inventor Akio Fukase

Akio Fukase 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: 20240114716
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: December 6, 2023
    Publication date: April 4, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
  • Patent number: 11882724
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: January 23, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
  • Patent number: 11733438
    Abstract: The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: August 22, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akio Fukase, Kunihiko Yano
  • Patent number: 11550159
    Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
    Type: Grant
    Filed: December 17, 2021
    Date of Patent: January 10, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masatoshi Yonekubo, Akio Fukase
  • Publication number: 20220328793
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 13, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
  • Patent number: 11404673
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: August 2, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
  • Publication number: 20220107503
    Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
    Type: Application
    Filed: December 17, 2021
    Publication date: April 7, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masatoshi YONEKUBO, Akio FUKASE
  • Publication number: 20220082736
    Abstract: The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Akio FUKASE, Kunihiko YANO
  • Patent number: 11275251
    Abstract: An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: March 15, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akio Fukase, Mitsutaka Ide, Toshiyuki Noguchi
  • Patent number: 11237398
    Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: February 1, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masatoshi Yonekubo, Akio Fukase
  • Patent number: 11221496
    Abstract: A display module of the present disclosure includes a display module main body and a housing. The display module main body includes a first, a second display element, and a prism. The housing includes a first, and a second frame. The first frame holds the first display element in a state in which the prism is positioned between a first and a second plate portion, and in which a third plate portion is in contact with the first display element and faces a first surface, and the second frame holds the second display element in a state in which the prism is positioned between a fourth and a fifth plate portion, and in which a sixth plate portion is in contact with the second display element and faces a second surface.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: January 11, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Takeda, Akio Fukase, Hiroyuki Tatsugi
  • Patent number: 11209579
    Abstract: The cross dichroic prism according to the present disclosure includes four prisms and two dichroic mirrors. Each of the four prisms has a triangle-prism shape. The four prisms are arranged to form a quadrangular prism as a whole in a manner such that the ridge line portions are located close to each other, a first plane of one prism faces a second plane of another prism, and a third plane faces outward. Each of the two dichroic mirrors is constituted of a dielectric multilayer film provided between the first plane of one prism and the second plane of another prism. The outermost layer of a dielectric layer constituting the dielectric multilayer film is provided in contact with each of the first plane of the one prism and the second plane of the other prism.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: December 28, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akio Fukase, Kunihiko Yano
  • Publication number: 20210199979
    Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
    Type: Application
    Filed: March 17, 2021
    Publication date: July 1, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Masatoshi YONEKUBO, Akio FUKASE
  • Publication number: 20210167333
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: February 11, 2021
    Publication date: June 3, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
  • Patent number: 10983357
    Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 20, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Masatoshi Yonekubo, Akio Fukase
  • Patent number: 10957876
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: March 23, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
  • Publication number: 20210063753
    Abstract: An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Akio FUKASE, Mitsutaka IDE, Toshiyuki NOGUCHI
  • Patent number: 10866424
    Abstract: An image display device of the present disclosure includes an image light generating device, a first, a second, a third, and a fourth optical unit. A first intermediate image is formed between the first and the third optical unit. A pupil is formed between the second and the fourth optical unit. A second intermediate image is formed between the third and the fourth optical unit. An exit pupil is formed at an opposite side of the fourth optical unit from the third optical unit. The image light generating device includes a first, a second, a third light emitting panel, and a color synthesis element. The color synthesis element is constituted of a cross dichroic prism including a first and a second dichroic film that intersect with each other. Each of the first and the second dichroic film does not have a polarization separation characteristic.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: December 15, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akio Fukase, Mitsutaka Ide, Toshiyuki Noguchi
  • Publication number: 20200285064
    Abstract: A display module of the present disclosure includes a display module main body and a housing. The display module main body includes a first, a second display element, and a prism. The housing includes a first, and a second frame. The first frame holds the first display element in a state in which the prism is positioned between a first and a second plate portion, and in which a third plate portion is in contact with the first display element and faces a first surface, and the second frame holds the second display element in a state in which the prism is positioned between a fourth and a fifth plate portion, and in which a sixth plate portion is in contact with the second display element and faces a second surface.
    Type: Application
    Filed: March 6, 2020
    Publication date: September 10, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TAKEDA, Akio FUKASE, Hiroyuki TATSUGI
  • Publication number: 20200185651
    Abstract: A first light-emitting element and a second light-emitting element that have a resonance structure that causes output light from a light-emission functional layer to resonate between a reflective layer and a semi-transmissive reflective layer, and a pixel definition layer, and in which an aperture part is formed to correspond to each of the first light-emitting element and the second light-emitting element, are formed on a base. A first interval between the reflective layer and the semi-transmissive reflective layer in the first light-emitting element and a second interval between the reflective layer and the semi-transmissive reflective layer in the second light-emitting element are different, and a film thickness of the pixel definition layer is less than a difference between the first interval and the second interval.
    Type: Application
    Filed: February 13, 2020
    Publication date: June 11, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA