Patents by Inventor Yuichi Iwata
Yuichi Iwata 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: 20240092568Abstract: An overturning prevention device includes a shaking occurrence information acquisition section configured to acquire shaking occurrence information indicating that shaking of a travel face where a moving body travels is equal to or more than a predetermined reference value; a support arm supported by the moving body; and an arm driving device configured to drive the support arm. The support arm is configured to be changeable between a projecting state where the support arm projects outwardly in a vehicle-body width direction from the moving body to be grounded on a travel face outside the moving body in the vehicle-body width direction and a retracted state where the support arm is retracted inside a width dimension of the moving body.Type: ApplicationFiled: September 19, 2023Publication date: March 21, 2024Inventors: Yuichi Ueda, Masashige Iwata, Kazunari Kimura, Satoshi Horie
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Patent number: 11674652Abstract: A phosphor element includes an incident face for an excitation light, a reflecting face opposing the incident face and a side face, and the phosphor element converts at least a part of the excitation light incident onto the incident face into a fluorescence and emits the fluorescence from the incident face. The incident face has an area greater that an area of the reflecting face. The phosphor element includes an inclination region in which an inclination angle of the side face with respect to a vertical axis perpendicular to the incident face is monotonously increased from the reflecting face toward the incident face, viewed in a cross-section perpendicular to the incident face and along the longest dividing line halving the incident face.Type: GrantFiled: May 18, 2022Date of Patent: June 13, 2023Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Tetsuya Ejiri, Yuichi Iwata
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Patent number: 11635189Abstract: A phosphor element includes: a phosphor part having an incident face for excitation light, an opposing face opposing the incident face, and a side face, the phosphor part converting at least a part of the excitation light incident onto the incident face into a fluorescence and emitting the fluorescence from the incident face; an integral low refractive index layer on the side face and opposing face of the phosphor part and having a refractive index lower than that of the phosphor part; and an integral reflection film covering a surface of the low refractive index layer. The area of the incident face of the phosphor part is larger than the area of the opposing face.Type: GrantFiled: January 18, 2022Date of Patent: April 25, 2023Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Naotake Okada, Yuichi Iwata, Keiichiro Asai, Yudai Uno
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Patent number: 11561333Abstract: A white light generating device, for generating white light from an excitation light of a laser light having a wavelength of from 280 nm-495 nm, includes a fluorescent body generating a fluorescence having a wavelength longer than a wavelength of the excitation light. The fluorescent body includes an emission-side end surface emitting excitation light and fluorescence, an opposing end surface on an opposite side of the emission-side end surface, and an outer peripheral surface. The emission-side end surface has an area larger than an area of the opposing end surface, and the outer peripheral surface of the fluorescent body includes a part inclined with respect to a central axis of the fluorescent body by from 3.4°-23° over an entire periphery of the fluorescent body. The emission-side end surface has an area of from 0.3 mm2-1.52 mm2.Type: GrantFiled: August 14, 2020Date of Patent: January 24, 2023Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Yuichi Iwata, Tetsuya Ejiri
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Patent number: 11525950Abstract: A white light generating device, for generating white light from an excitation light of a laser light having a wavelength of from 280 nm-495 nm, includes a fluorescent body generating a fluorescence having a wavelength longer than a wavelength of the excitation light. The fluorescent body includes an emission-side end surface emitting excitation light and fluorescence, an opposing end surface on an opposite side of the emission-side end surface, and an outer peripheral surface. The emission-side end surface has an area larger than an area of the opposing end surface, and the outer peripheral surface of the fluorescent body includes a part inclined with respect to a central axis of the fluorescent body by from 3.4°-23° over an entire periphery of the fluorescent body. The emission-side end surface has an area of from 0.3 mm2-1.52 mm2.Type: GrantFiled: August 14, 2020Date of Patent: December 13, 2022Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Yuichi Iwata, Tetsuya Ejiri
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Publication number: 20220363480Abstract: An automated warehouse unit includes two rows of fixed conveyors conveying the storage target object in a first direction, a receiving-side transfer unit provided on one end portion side of the two rows and extending in a second direction, and a shipping-side transfer unit provided on the other end portion side of the two rows and extending in the second direction. Each transfer unit includes a moving device configured to reciprocally move a moving body in the second direction between a position facing one fixed conveyor in the fixed conveyors and a position facing the other fixed conveyor in the fixed conveyors, and a transportation conveyor supported by the moving body and configured to transfer the storage target object to the two rows s in the first direction.Type: ApplicationFiled: July 28, 2022Publication date: November 17, 2022Applicant: HIRATA CORPORATIONInventors: Bungo MATSUMOTO, Yuichi IWATA
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Publication number: 20220278506Abstract: A phosphor element includes an incident face for an excitation light, an emitting face opposing the incident face and a side face, and the element converts at least a part of the incident excitation light incident onto the incident face to fluorescence and emits the fluorescence from the emitting face. The emitting face has an area larger than an area of the incident face. The phosphor element comprises an inclination region in which an inclination angle of the side face with respect to a vertical axis perpendicular to the emitting face is monotonously increased from the incident face toward the emitting face, viewed in a cross-section perpendicular to the emitting face and along the longest dividing line halving the emitting face.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Applicant: NGK Insulators, Ltd.Inventors: Jungo KONDO, Naotake OKADA, Shoichiro YAMAGUCHI, Tetsuya EJIRI, Yuichi IWATA
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Publication number: 20220275919Abstract: A phosphor element includes an incident face for an excitation light, a reflecting face opposing the incident face and a side face, and the phosphor element converts at least a part of the excitation light incident onto the incident face into a fluorescence and emits the fluorescence from the incident face. The incident face has an area greater that an area of the reflecting face. The phosphor element includes an inclination region in which an inclination angle of the side face with respect to a vertical axis perpendicular to the incident face is monotonously increased from the reflecting face toward the incident face, viewed in a cross-section perpendicular to the incident face and along the longest dividing line halving the incident face.Type: ApplicationFiled: May 18, 2022Publication date: September 1, 2022Applicant: NGK Insulators, Ltd.Inventors: Jungo KONDO, Naotake OKADA, Shoichiro YAMAGUCHI, Tetsuya EJIRI, Yuichi IWATA
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Publication number: 20220205612Abstract: A phosphor element includes: a phosphor part having an incident face for excitation light, an opposing face opposing the incident face, and a side face, the phosphor part converting at least a part of the excitation light incident onto the incident face into a fluorescence and emitting the fluorescence from the incident face; an integral low refractive index layer on the side face and opposing face of the phosphor part and having a refractive index lower than that of the phosphor part; and an integral reflection film covering a surface of the low refractive index layer. The area of the incident face of the phosphor part is larger than the area of the opposing face.Type: ApplicationFiled: January 18, 2022Publication date: June 30, 2022Inventors: Jungo KONDO, Naotake OKADA, Yuichi IWATA, Keiichiro ASAI, Yudai UNO
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Patent number: 11262046Abstract: A phosphor element includes: a phosphor part having an incident face for excitation light, an opposing face opposing the incident face, and a side face, the phosphor part converting at least a part of the excitation light incident onto the incident face into a fluorescence and emitting the fluorescence from the incident face; an integral low refractive index layer on the side face and opposing face of the phosphor part and having a refractive index lower than that of the phosphor part; and an integral reflection film covering a surface of the low refractive index layer. The area of the incident face of the phosphor part is larger than the area of the opposing face.Type: GrantFiled: March 26, 2021Date of Patent: March 1, 2022Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Naotake Okada, Yuichi Iwata, Keiichiro Asai, Yudai Uno
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Publication number: 20210215318Abstract: A phosphor element includes: a phosphor part having an incident face of the excitation light, an opposing face opposing the incident face, and a side face, the phosphor part converting at least a part of the excitation light incident onto the incident face into the fluorescence and emitting the fluorescence from the incident face; an integral low refractive index layer on the side face and opposing face of the phosphor part and having a refractive index lower than that of the phosphor part; and an integral reflection film covering a surface of the low refractive index layer. The area of the incident face of the phosphor part is larger than the area of the opposing face.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Inventors: Jungo KONDO, Naotake OKADA, Yuichi IWATA, Keiichiro ASAI, Yudai UNO
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Patent number: 11016233Abstract: An optical waveguide structure includes an optical waveguide, a reflection film provided on the optical waveguide and reflecting a light propagating in the optical waveguide, a metal film provided on the reflection film, and a surface oxidized film provided on the metal film and generated by surface oxidation of the metal film.Type: GrantFiled: May 21, 2020Date of Patent: May 25, 2021Assignee: NGK INSULATORS, LTD.Inventors: Yuichi Iwata, Jungo Kondo, Shoichiro Yamaguchi
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Patent number: 10898980Abstract: A turntable includes a rotatably supported table, an electric cylinder, and a cam mechanism configured to convert the linear motion of the electric cylinder into the rotary motion of the table. The cam mechanism includes at least one cam groove provided on the table side, and at least one cam follower moved in parallel to the linear motion direction of the electric cylinder and configured to engage with the at least one cam groove.Type: GrantFiled: February 22, 2018Date of Patent: January 26, 2021Assignee: HIRATA CORPORATIONInventors: Takeru Higuchi, Yuichi Iwata, Bungo Matsumoto
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Patent number: 10859747Abstract: A phosphor element comprises: a support substrate; an optical waveguide for propagating an excitation light through the waveguide, the optical waveguide comprising a phosphor generating a fluorescence, and the optical waveguide comprising an emission side end surface emitting the excitation light and the fluorescence, an opposing end surface opposing the emission side end surface, a bottom surface, a top surface opposing the bottom surface and a pair of side surfaces; a bottom surface side clad layer covering the bottom surface of the optical waveguide; a top surface side clad layer covering the top surface of the optical waveguide; side surface side clad layers covering the side surfaces of the optical waveguide, respectively; a top surface side reflection film covering the top surface side clad layer; side surface side reflection films covering the side surface side clad layers, respectively; and a bottom surface side reflection film provided between the support substrate and the bottom surface side clad laType: GrantFiled: June 13, 2019Date of Patent: December 8, 2020Assignee: NGK Insulators, Ltd.Inventors: Jungo Kondo, Naotake Okada, Shoichiro Yamaguchi, Keiichiro Asai, Shuhei Higashihara, Yuichi Iwata, Tetsuya Ejiri, Akira Hamajima
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Publication number: 20200371278Abstract: A white light generating device, for generating white light from an excitation light of a laser light having a wavelength of 280 nm or longer and 495 nm or shorter, includes a fluorescent body generating a fluorescence having a wavelength longer than a wavelength of the excitation light. The fluorescent body includes an emission-side end surface emitting excitation light and fluorescence, an opposing end surface on an opposite side of the emission-side end surface, and an outer peripheral surface. The emission-side end surface has an area larger than an area of the opposing end surface, and the outer peripheral surface of the fluorescent body includes a part inclined with respect to a central axis of the fluorescent body by 3.4° or larger and 23° or smaller over an entire periphery of the fluorescent body. The emission-side end surface has an area of 0.3=2 or larger and 1.52=2 or smaller.Type: ApplicationFiled: August 14, 2020Publication date: November 26, 2020Inventors: Jungo KONDO, Yuichi IWATA, Tetsuya EJIRI
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Publication number: 20200278485Abstract: An optical waveguide structure includes an optical waveguide, a reflection film provided on the optical waveguide and reflecting a light propagating in the optical waveguide, a metal film provided on the reflection film, and a surface oxidized film provided on the metal film and generated by surface oxidation of the metal film.Type: ApplicationFiled: May 21, 2020Publication date: September 3, 2020Inventors: Yuichi IWATA, Jungo KONDO, Shoichiro YAMAGUCHI
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Publication number: 20190310408Abstract: A phosphor element comprises: a support substrate; an optical waveguide for propagating an excitation light through the waveguide, the optical waveguide comprising a phosphor generating a fluorescence, and the optical waveguide comprising an emission side end surface emitting the excitation light and the fluorescence, an opposing end surface opposing the emission side end surface, a bottom surface, a top surface opposing the bottom surface and a pair of side surfaces; a bottom surface side clad layer covering the bottom surface of the optical waveguide; a top surface side clad layer covering the top surface of the optical waveguide; side surface side clad layers covering the side surfaces of the optical waveguide, respectively; a top surface side reflection film covering the top surface side clad layer; side surface side reflection films covering the side surface side clad layers, respectively; and a bottom surface side reflection film provided between the support substrate and the bottom surface side clad laType: ApplicationFiled: June 13, 2019Publication date: October 10, 2019Applicant: NGK INSULATORS, LTD.Inventors: Jungo KONDO, Naotake OKADA, Shoichiro YAMAGUCHI, Keiichiro ASAI, Shuhei HIGASHIHARA, Yuichi Iwata, Tetsuya Ejiri, Akira Hamajima
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Publication number: 20180178335Abstract: A turntable includes a rotatably supported table, an electric cylinder, and a cam mechanism configured to convert the linear motion of the electric cylinder into the rotary motion of the table. The cam mechanism includes at least one cam groove provided on the table side, and at least one cam follower moved in parallel to the linear motion direction of the electric cylinder and configured to engage with the at least one cam groove.Type: ApplicationFiled: February 22, 2018Publication date: June 28, 2018Applicant: HIRATA CORPORATIONInventors: Takeru HIGUCHI, Yuichi IWATA, Bungo MATSUMOTO
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Patent number: 9574933Abstract: Provided a terahertz-wave detection element with high spatial resolution and suppressing a crack occurrence. A method of manufacturing the detection element capable of detecting a spatial intensity distribution of a terahertz wave includes: a step of forming an oxide layer on one main surface of a first substrate consisting of an electro-optic crystal; a step of joining the one main surface of the first substrate and a second substrate by an adhesive consisting; a step of thinning the first substrate of a joined body, to a thickness of 1-30 ?m by polishing the first substrate; and a step of obtaining a large number of terahertz-wave detection elements by cutting the joined body. The oxide layer is formed such that the first substrate becomes convex to a side of the one main surface by causing a tensile stress to act on it.Type: GrantFiled: March 23, 2015Date of Patent: February 21, 2017Assignee: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Yuichi Iwata, Tetsuya Ejiri
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Publication number: 20150192474Abstract: Provided a terahertz-wave detection element in which the occurrence of warping and a crack is suppressed. The detection element includes: an electro-optic crystal layer of a thickness 1-10 ?m in which a refractive index at an incident position of the terahertz wave changes in accordance with incident intensity; a substrate supporting the electro-optic crystal layer; a resin layer of a thickness 0.1-1 ?m that joins them; and a total reflection layer formed on a surface of the electro-optic crystal, consisting of a first dielectric multilayer film and having a thickness not less than 1 ?m. The detection element detects a spatial-characteristics distribution generated in probe light in superposition with the terahertz wave, thereby to detect the spatial intensity distribution of the incident terahertz wave. A ratio of a thickness of the resin layer to that of the total reflection layer is set not more than ?.Type: ApplicationFiled: March 20, 2015Publication date: July 9, 2015Applicant: NGK INSULATORS, LTD.Inventors: Jungo Kondo, Yuichi Iwata, Tetsuya Ejiri