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).
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Publication number: 20240114716Abstract: 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: ApplicationFiled: December 6, 2023Publication date: April 4, 2024Applicant: SEIKO EPSON CORPORATIONInventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
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Patent number: 11882724Abstract: 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: GrantFiled: June 28, 2022Date of Patent: January 23, 2024Assignee: SEIKO EPSON CORPORATIONInventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
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Patent number: 11733438Abstract: 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: GrantFiled: November 22, 2021Date of Patent: August 22, 2023Assignee: SEIKO EPSON CORPORATIONInventors: Akio Fukase, Kunihiko Yano
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Patent number: 11550159Abstract: 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: GrantFiled: December 17, 2021Date of Patent: January 10, 2023Assignee: SEIKO EPSON CORPORATIONInventors: Masatoshi Yonekubo, Akio Fukase
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Publication number: 20220328793Abstract: 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: ApplicationFiled: June 28, 2022Publication date: October 13, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
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Patent number: 11404673Abstract: 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: GrantFiled: February 11, 2021Date of Patent: August 2, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
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Publication number: 20220107503Abstract: 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: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Masatoshi YONEKUBO, Akio FUKASE
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Publication number: 20220082736Abstract: 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: ApplicationFiled: November 22, 2021Publication date: March 17, 2022Applicant: SEIKO EPSON CORPORATIONInventors: Akio FUKASE, Kunihiko YANO
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Patent number: 11275251Abstract: 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: GrantFiled: November 13, 2020Date of Patent: March 15, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Akio Fukase, Mitsutaka Ide, Toshiyuki Noguchi
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Patent number: 11237398Abstract: 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: GrantFiled: March 17, 2021Date of Patent: February 1, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Masatoshi Yonekubo, Akio Fukase
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Patent number: 11221496Abstract: 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: GrantFiled: March 6, 2020Date of Patent: January 11, 2022Assignee: SEIKO EPSON CORPORATIONInventors: Takashi Takeda, Akio Fukase, Hiroyuki Tatsugi
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Patent number: 11209579Abstract: 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: GrantFiled: July 2, 2019Date of Patent: December 28, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Akio Fukase, Kunihiko Yano
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Publication number: 20210199979Abstract: 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: ApplicationFiled: March 17, 2021Publication date: July 1, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Masatoshi YONEKUBO, Akio FUKASE
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Publication number: 20210167333Abstract: 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: ApplicationFiled: February 11, 2021Publication date: June 3, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA
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Patent number: 10983357Abstract: 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: GrantFiled: June 28, 2019Date of Patent: April 20, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Masatoshi Yonekubo, Akio Fukase
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Patent number: 10957876Abstract: 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: GrantFiled: February 13, 2020Date of Patent: March 23, 2021Assignee: SEIKO EPSON CORPORATIONInventors: Ryoichi Nozawa, Atsushi Amano, Takeshi Koshihara, Akio Fukase, Shinichi Iwata
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Publication number: 20210063753Abstract: 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: ApplicationFiled: November 13, 2020Publication date: March 4, 2021Applicant: SEIKO EPSON CORPORATIONInventors: Akio FUKASE, Mitsutaka IDE, Toshiyuki NOGUCHI
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Patent number: 10866424Abstract: 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: GrantFiled: November 7, 2019Date of Patent: December 15, 2020Assignee: SEIKO EPSON CORPORATIONInventors: Akio Fukase, Mitsutaka Ide, Toshiyuki Noguchi
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Publication number: 20200285064Abstract: 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: ApplicationFiled: March 6, 2020Publication date: September 10, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Takashi TAKEDA, Akio FUKASE, Hiroyuki TATSUGI
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Publication number: 20200185651Abstract: 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: ApplicationFiled: February 13, 2020Publication date: June 11, 2020Applicant: SEIKO EPSON CORPORATIONInventors: Ryoichi NOZAWA, Atsushi AMANO, Takeshi KOSHIHARA, Akio FUKASE, Shinichi IWATA