Patents by Inventor Tomohito Mizuno
Tomohito Mizuno 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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Patent number: 12218266Abstract: A photodetection element includes a magnetic element including a first ferromagnetic layer to which light is applied, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer; a first electrode in contact with a first surface of the magnetic element, the first surface being located on a first ferromagnetic layer side of the magnetic element in a lamination direction; a second electrode in contact with a second surface of the magnetic element, the second surface being opposite to the first surface; and a first high thermal conductivity layer disposed outside of the first ferromagnetic layer and having higher thermal conductivity than the first electrode.Type: GrantFiled: January 14, 2022Date of Patent: February 4, 2025Assignee: TDK CORPORATIONInventors: Takekazu Yamane, Tomohito Mizuno
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Patent number: 12218161Abstract: An optical sensor includes a wavelength filter configured to transmit light in a specific wavelength range and a magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The light passing through the wavelength filter is applied to the magnetic element and the light applied to the magnetic element is detected.Type: GrantFiled: December 22, 2021Date of Patent: February 4, 2025Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Dai Matsuoka, Tomohito Mizuno, Tetsuya Shibata
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Publication number: 20240402499Abstract: A method for manufacturing a video laser module including: a substrate provided with an optical waveguide; and a subcarrier with a laser light source mounted thereon, the method including: while supplying an electric current to the laser light source via an electrode provided in the subcarrier and oscillating a laser from the laser light source, approaching the subcarrier to an input port of the optical waveguide provided in the substrate; detecting a light intensity at an output port of the optical waveguide; adjusting a position of the subcarrier so that the light intensity is maximized; and metal-bonding the subcarrier and the substrate at a position of the subcarrier where the light intensity is maximized.Type: ApplicationFiled: August 12, 2024Publication date: December 5, 2024Applicant: TDK CorporationInventors: Hideaki FUKUZAWA, Tomohito Mizuno, Tetsuya Shibata, Tsuyoshi Komaki
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Patent number: 12152934Abstract: An optical device includes a magnetic element and a light application part, wherein the light application part configured to apply light to the magnetic element, the magnetic element includes a first ferromagnetic layer to which the light is applied, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, and magnetization of the first ferromagnetic layer is inclined with respect to both an in-plane direction in which the first ferromagnetic layer extends and a surface-perpendicular direction perpendicular to a surface on which the first ferromagnetic layer extends in a state in which the light is not applied from the light application part to the magnetic element.Type: GrantFiled: March 27, 2023Date of Patent: November 26, 2024Assignee: TDK CORPORATIONInventors: Takekazu Yamane, Tetsuya Shibata, Tomohito Mizuno, Hideaki Fukuzawa
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Patent number: 12124096Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.Type: GrantFiled: January 12, 2024Date of Patent: October 22, 2024Assignee: TDK CORPORATIONInventors: Tetsuya Shibata, Hideaki Fukuzawa, Tomohito Mizuno, Masahiro Shinkai
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Publication number: 20240332888Abstract: A laser module includes: a light source that emits laser light; a housing that accommodates the light source and is provided with an emission port through which the laser light is emitted; a sealing member having optical transparency that seals the emission port and has a first surface and a second surface intersecting an emission direction of the laser light; and a first metasurface lens provided on the first surface.Type: ApplicationFiled: March 26, 2024Publication date: October 3, 2024Applicant: TDK CORPORATIONInventors: Tomohito Mizuno, Hideaki Fukuzawa, Tsuyoshi Komaki, Tetsuya Shibata, Takeshi Nojiri
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Patent number: 12107631Abstract: A transceiver device includes: a receiving device including a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.Type: GrantFiled: June 15, 2023Date of Patent: October 1, 2024Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata, Takashi Kikukawa
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Patent number: 12085721Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.Type: GrantFiled: September 26, 2023Date of Patent: September 10, 2024Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata, Tsuyoshi Komaki
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Patent number: 12068784Abstract: A transceiver device includes: a receiving device including a magnetic element having a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, wherein the receiving device is configured to receive an optical signal; a transmission device including a modulated light output element, wherein the transmission device is configured to transmit an optical signal; and a circuit chip including an integrated circuit electrically connected to the magnetic element and the modulated light output element.Type: GrantFiled: June 15, 2023Date of Patent: August 20, 2024Assignee: TDK CORPORATIONInventors: Hideaki Fukuzawa, Tomohito Mizuno, Tetsuya Shibata, Takashi Kikukawa
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Publication number: 20240272421Abstract: An optical module for displaying an image: a laser light source part with laser light emitting elements emitting laser lights having different peak wavelengths; a mirror part with an optical scanning mirror element on a second substrate integrated with the first substrate; a laser drive control part individually and independently controlling an intensity of laser light from the laser light emitting elements; a mirror drive control part controlling swinging of the optical scanning mirror element; a memory storing a lookup table that is an array of correspondence relations between each swing position of the optical scanning mirror element and a projection position of laser light from the laser light emitting elements on the image display surface; and a system control part controlling the laser drive control part and the mirror drive control part so as to control the mirror drive control part based on the lookup table.Type: ApplicationFiled: January 8, 2024Publication date: August 15, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tsuyoshi KOMAKI, Ardalan HESHMATI, Kit Chu LAM
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Publication number: 20240219724Abstract: A retinal projection device includes: a light source that emits laser light; a movable mirror that performs scanning with the laser light; and a reflector that projects an image onto a retina of a user wearing a near eye wearable device by reflecting the laser light having passed through the movable mirror and irradiating the retina with reflected light. The reflector includes a plurality of unit regions provided along a surface of a lens of the near eye wearable device, and the surface faces an eyeball of the user. Each of the plurality of unit regions is a nanostructure configured to reflect the laser light at a reflection angle corresponding to a position where the unit region is provided when the laser light having passed through the movable mirror is incident on the unit region.Type: ApplicationFiled: December 26, 2023Publication date: July 4, 2024Applicant: TDK CORPORATIONInventors: Tomohito MIZUNO, Hideaki FUKUZAWA, Kit Chu LAM
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Publication number: 20240219709Abstract: An optical module includes: a laser light source part in which a laser light emitting element is formed on one main surface of a first substrate; and a mirror part in which an optical scanning mirror element is formed on one main surface of a second substrate, wherein the first substrate and the second substrate are bonded via a metal bonding layer, and the optical module is configured for laser light emitted from the laser light emitting element to be reflected by the optical scanning mirror element.Type: ApplicationFiled: December 26, 2023Publication date: July 4, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito Mizuno, Tsuyoshi Komaki, Ardalan Heshmati, Kit Chu Lam
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Publication number: 20240219723Abstract: A retinal projection device includes: a projector module including a light source that emits laser light and a movable mirror that performs scanning with the laser light; a reflector that projects an image onto a retina of a user wearing the near eye wearable device by reflecting the laser light having passed through the movable mirror and irradiating the retina with reflected light; and a controller that determines an irradiation range of the reflector to be irradiated with the laser light in accordance with a position of a pupil of the user and controls the projector module to irradiate the irradiation range with the laser light. The reflector includes a plurality of unit regions provided along a surface of a lens of the near eye wearable device, and the surface faces an eyeball of the user. The irradiation range is a part of the plurality of unit regions.Type: ApplicationFiled: December 26, 2023Publication date: July 4, 2024Applicant: TDK CORPORATIONInventors: Tomohito MIZUNO, Hideaki FUKUZAWA, Kit Chu LAM
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Publication number: 20240222928Abstract: The optical module includes a laser light source part in which a laser light emitting element is formed on one main surface of a first substrate, a mirror part in which an optical scanning mirror element is formed on one main surface of a second substrate, and a lens part in which an optical lens is formed on one main surface of a third substrate, wherein the first substrate and the third substrate are bonded via a metal bonding layer, and the optical module is configured for laser light emitted from the laser light emitting element to be reflected by the optical scanning mirror element via the optical lens.Type: ApplicationFiled: December 21, 2023Publication date: July 4, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tsuyoshi KOMAKI, Takashi AOYAGI, Ardalan HESHMATI, Kit Chu LAM
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Publication number: 20240151919Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: TDK CORPORATIONInventors: Tetsuya SHIBATA, Hideaki FUKUZAWA, Tomohito MIZUNO, Masahiro SHINKAI
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Patent number: 11953742Abstract: This optical device includes at least one magnetic element including a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer, a laser diode, and a waveguide, in which the waveguide includes at least one input waveguide optically connected to the laser diode and an output waveguide connected to the input waveguide, and at least some of light propagating in at least one of the input waveguide and the output waveguide is applied to the magnetic element.Type: GrantFiled: March 14, 2022Date of Patent: April 9, 2024Assignee: TDK CORPORATIONInventors: Tetsuya Shibata, Hideaki Fukuzawa, Tomohito Mizuno, Masahiro Shinkai
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Publication number: 20240103277Abstract: This optical waveguide detection element includes a substrate, an optical waveguide layer formed on the substrate, and a photodetector. The optical waveguide layer includes a first optical waveguide in which visible light having a wavelength of 380 nm to 800 nm propagates, a second optical waveguide in which near-infrared light having a wavelength of 801 nm to 2000 nm propagates, and a third optical waveguide in which light propagates to a light receiving surface of the photodetector. A visible light output port of the first optical waveguide from which the visible light is output, a near-infrared light output port of the second optical waveguide from which the near-infrared light is output, and a reflected light input port of the third optical waveguide to which the near-infrared light is reflected and returned are arranged on one end surface of the optical waveguide layer.Type: ApplicationFiled: September 26, 2023Publication date: March 28, 2024Applicant: TDK CORPORATIONInventors: Hideaki FUKUZAWA, Tomohito MIZUNO, Tetsuya SHIBATA, Tsuyoshi KOMAKI
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Patent number: 11869989Abstract: An electrode structure includes: a metal film with an opening formed in a part of the metal film; and a transparent conductive film disposed in the opening, wherein the transparent conductive film is electronically connected to an element and overlaps with the element as viewed in a plan view in a thickness direction of the transparent conductive film.Type: GrantFiled: October 25, 2021Date of Patent: January 9, 2024Assignee: TDK CORPORATIONInventors: Tomohito Mizuno, Takekazu Yamane, Hideaki Fukuzawa, Tetsuya Shibata
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Patent number: 11821787Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.Type: GrantFiled: December 12, 2022Date of Patent: November 21, 2023Assignee: TDK CORPORATIONInventors: Takeshi Nojiri, Hideaki Fukuzawa, Tetsuya Shibata, Tomohito Mizuno, Susumu Aoki
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Publication number: 20230341260Abstract: The light detection element includes a magnetic element and an optical waveguide. The magnetic element includes a first ferromagnetic layer, a second ferromagnetic layer, and a spacer layer sandwiched between the first ferromagnetic layer and the second ferromagnetic layer. The optical waveguide includes at least a core and a cladding covering at least a part of the core. Light that has propagated through the optical waveguide is applied to the magnetic element.Type: ApplicationFiled: December 12, 2022Publication date: October 26, 2023Applicant: TDK CORPORATIONInventors: Takeshi NOJIRI, Hideaki FUKUZAWA, Tetsuya SHIBATA, Tomohito MIZUNO, Susumu AOKI