Patents by Inventor Jugo Mitomo
Jugo Mitomo 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: 11011888Abstract: A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, a first semiconductor layer, and a second semiconductor layer. The first semiconductor layer and the second semiconductor layer sandwich the active layer in between. The light-emitting device further includes a current confining layer, a concave-shaped first reflecting mirror provided on side of the first semiconductor layer, and a second reflecting mirror provided on side of the second semiconductor layer. The current confining layer has an opening. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening in between. The light-emitting device further includes a first reflecting layer and a phosphor layer. The first reflecting layer is disposed at a position opposed to the first reflecting mirror with a predetermined gap in between.Type: GrantFiled: March 5, 2018Date of Patent: May 18, 2021Assignee: SONY CORPORATIONInventors: Jugo Mitomo, Tatsushi Hamaguchi, Hiroshi Nakajima, Masamichi Ito, Susumu Sato, Hidekazu Kawanishi
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Publication number: 20210135428Abstract: A light emitting element according to the present disclosure includes a first light reflecting layer 41, a laminated structure 20, and a second light reflecting layer 42 laminated to each other. The laminated structure 20 includes a first compound semiconductor layer 21, a light emitting layer 23, and a second compound semiconductor layer 22 laminated to each other from a side of the first light reflecting layer. Light from the laminated structure 20 is emitted to an outside via the first light reflecting layer 41 or the second light reflecting layer 42. The first light reflecting layer 41 has a structure in which at least two types of thin films 41A and 41B are alternately laminated to each other in plural numbers. A film thickness modulating layer 80 is provided between the laminated structure 20 and the first light reflecting layer 41.Type: ApplicationFiled: October 13, 2017Publication date: May 6, 2021Inventors: Tatsushi HAMAGUCHI, Jugo MITOMO, Hiroshi NAKAJIMA, Masamichi ITO, Susumu SATO
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Publication number: 20210104870Abstract: A light-emitting element includes: a laminated structure body 20 which is formed from a GaN-based compound semiconductor and in which a first compound semiconductor layer 21 including a first surface 21a and a second surface 21b that is opposed to the first surface 21a, an active layer 23 that faces the second surface 21b of the first compound semiconductor layer 21, and a second compound semiconductor layer 22 including a first surface 22a that faces the active layer 23 and a second surface 22b that is opposed to the first surface 22a are laminated; a first light reflection layer 41 that is provided on the first surface 21a side of the first compound semiconductor layer 21; and a second light reflection layer 42 that is provided on the second surface 22b side of the second compound semiconductor layer 22. The first light reflection layer 41 includes a concave mirror portion 43, and the second light reflection layer 42 has a flat shape.Type: ApplicationFiled: December 18, 2020Publication date: April 8, 2021Inventors: Susumu SATO, Tatsushi HAMAGUCHI, Shoichiro IZUMI, Noriyuki FUTAGAWA, Masamichi ITO, Jugo MITOMO, Hiroshi NAKAJIMA
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Patent number: 10873174Abstract: A light-emitting element includes: a laminated structure body 20 which is formed from a GaN-based compound semiconductor and in which a first compound semiconductor layer 21 including a first surface 21a and a second surface 21b that is opposed to the first surface 21a, an active layer 23 that faces the second surface 21b of the first compound semiconductor layer 21, and a second compound semiconductor layer 22 including a first surface 22a that faces the active layer 23 and a second surface 22b that is opposed to the first surface 22a are laminated; a first light reflection layer 41 that is provided on the first surface 21a side of the first compound semiconductor layer 21; and a second light reflection layer 42 that is provided on the second surface 22b side of the second compound semiconductor layer 22. The first light reflection layer 41 includes a concave mirror portion 43, and the second light reflection layer 42 has a flat shape.Type: GrantFiled: September 1, 2017Date of Patent: December 22, 2020Assignee: Sony CorporationInventors: Susumu Sato, Tatsushi Hamaguchi, Shoichiro Izumi, Noriyuki Futagawa, Masamichi Ito, Jugo Mitomo, Hiroshi Nakajima
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Publication number: 20200343694Abstract: A light emitting element of the present disclosure includes a compound semiconductor substrate 11, a stacked structure 20 including a GaN-based compound semiconductor, a first light reflection layer 41, and a second light reflection layer 42. The stacked structure 20 includes, in a stacked state a first compound semiconductor layer 21, an active layer 23, and a second compound semiconductor layer 22. The first light reflection layer 41 is disposed on the compound semiconductor substrate 11 and has a concave mirror section 43. The second light reflection layer 42 is disposed on a second surface side of the second compound semiconductor layer 22 and has a flat shape. The compound semiconductor substrate 11 includes a low impurity concentration compound semiconductor substrate or a semi-insulating compound semiconductor substrate.Type: ApplicationFiled: December 11, 2018Publication date: October 29, 2020Inventors: Tatsushi HAMAGUCHI, Jugo MITOMO, Rintaro KODA
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Publication number: 20200316864Abstract: An exposure apparatus includes an optical system unit, a modeling unit, and a separation member. The optical system unit includes an exit region from which light is emitted. The modeling unit includes a modeling region to which photosensitive material is supplied, the photosensitive material being sensitive to the light emitted from the exit region. The separation member is translucent, and is arranged at least between the exit region of the optical system unit and the modeling region. This makes it possible to suppress a deterioration in a performance of an optical system that is caused due to the occurrence of a volatile constituent of photosensitive material.Type: ApplicationFiled: August 2, 2018Publication date: October 8, 2020Inventors: KEI SATOU, AKIRA SUZUKI, HIDEKAZU KAWANISHI, JUGO MITOMO
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Publication number: 20200313400Abstract: To provide a method of manufacturing a light-emitting module capable of accurately arranging a plurality of light-emitting elements at narrow intervals, and a light-emitting module manufactured by the method of manufacturing, and, moreover, a device on which the light-emitting module is mounted.Type: ApplicationFiled: September 13, 2018Publication date: October 1, 2020Inventors: HIDEKAZU KAWANISHI, JUGO MITOMO, KEI SATOU
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Publication number: 20200238605Abstract: A stereolithography apparatus according to an embodiment of the present technology includes a light source unit, a photo-detector, and a control unit. The light source unit includes a plurality of light-emitting elements that emits light for curing a photo-curing resin. The photo-detector detects the light emitted from the light source unit. The control unit generates an amount-of-light profile indicating an amount-of-light distribution of the light on the basis of the light detected by the photo-detector and controls light emission of the plurality of light-emitting elements on the basis of the amount-of-light profile.Type: ApplicationFiled: August 8, 2018Publication date: July 30, 2020Inventors: JUGO MITOMO, KEI SATOU
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Publication number: 20200220334Abstract: A light-emitting module according to an embodiment of the present technology includes a plurality of multi-light emitters each including a plurality of light-emitting elements that is arranged to be spaced apart from each other by a predetermined distance in one direction and emits light in a direction orthogonal to the one direction, and a plurality of individual electrodes that supplies each of the plurality of light-emitting elements with electric power, the plurality of multi-light emitters being arranged in the one direction. The plurality of light-emitting elements includes a first light-emitting element located at an outermost end in the one direction, and a second light-emitting element located at a second-outermost end in the one direction. The plurality of individual electrodes includes a first individual electrode that supplies the first light-emitting element with electric power, and a second individual electrode that supplies the second light-emitting element with electric power.Type: ApplicationFiled: August 8, 2018Publication date: July 9, 2020Inventors: JUGO MITOMO, KEI SATOU
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Publication number: 20200176952Abstract: A surface emitting laser includes: a semiconductor layer containing a nitride semiconductor, and including a first semiconductor layer, an active layer, and a second semiconductor layer that are stacked in this order, in which the semiconductor layer includes a light emitting region; and a first light reflecting layer and a second light reflecting layer that are opposed to each other with the semiconductor layer being disposed therebetween. The first semiconductor layer has a high dislocation portion disposed outside the light emitting region. The high dislocation portion has an average dislocation density higher than an average dislocation density of the light emitting region.Type: ApplicationFiled: April 17, 2018Publication date: June 4, 2020Inventors: HIROSHI NAKAJIMA, TATSUSHI HAMAGUCHI, JUGO MITOMO, SUSUMU SATO, MASAMICHI ITO, HIDEKAZU KAWANISHI
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Publication number: 20200169061Abstract: A light emitting element includes: a laminated structure 20 obtained by laminating a first compound semiconductor layer 21, an active layer 23, and a second compound semiconductor layer 22; a first light reflecting layer 41 disposed on a first surface side of the first compound semiconductor layer 21; a second light reflecting layer 42 disposed on a second surface side of the second compound semiconductor layer 22; and light convergence/divergence changing means 50. The first light reflecting layer 41 is formed on a concave mirror portion 43. The second light reflecting layer 42 has a flat shape. When light generated in the active layer 23 is emitted to the outside, a light convergence/divergence state before the light is incident on the light convergence/divergence changing means 50 is different from a light convergence/divergence state after the light passes through the light convergence/divergence changing means 50.Type: ApplicationFiled: May 9, 2018Publication date: May 28, 2020Inventors: Jugo MITOMO, Tatsushi HAMAGUCHI, Hiroshi NAKAJIMA, Masamichi ITO, Susumu SATO
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Publication number: 20200112141Abstract: A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, and a first semiconductor layer and a second semiconductor layer sandwiching the active layer. This light-emitting device further includes a current constriction layer having an opening and a vertical resonator including a first reflecting mirror having a concave-curved shape on the first semiconductor layer side and a second reflecting mirror on the second semiconductor side. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening. This light-emitting device further includes an optically transparent substrate between the first reflecting mirror and the laminate. The optically transparent substrate has a first convex portion having a convex-curved shape and one or more second convex portions on a surface on the side opposite to the laminate. The first convex portion is in contact with the first reflecting mirror.Type: ApplicationFiled: April 16, 2018Publication date: April 9, 2020Inventors: Susumu SATO, Tatsushi HAMAGUCHI, Jugo MITOMO, Hiroshi NAKAJIMA, Masamichi ITO, Hidekazu KAWANISHI
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Publication number: 20200028325Abstract: A light-emitting device according to an embodiment of the present disclosure includes a laminate. The laminate includes an active layer, a first semiconductor layer, and a second semiconductor layer. The first semiconductor layer and the second semiconductor layer sandwich the active layer in between. The light-emitting device further includes a current confining layer, a concave-shaped first reflecting mirror provided on side of the first semiconductor layer, and a second reflecting mirror provided on side of the second semiconductor layer. The current confining layer has an opening. The first reflecting mirror and the second reflecting mirror sandwich the laminate and the opening in between. The light-emitting device further includes a first reflecting layer and a phosphor layer. The first reflecting layer is disposed at a position opposed to the first reflecting mirror with a predetermined gap in between.Type: ApplicationFiled: March 5, 2018Publication date: January 23, 2020Inventors: JUGO MITOMO, TATSUSHI HAMAGUCHI, HIROSHI NAKAJIMA, MASAMICHI ITO, SUSUMU SATO, HIDEKAZU KAWANISHI
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Publication number: 20190334318Abstract: A surface-emitting laser according to an embodiment of the present disclosure includes a current constriction region having an opening and formed by impurities injected into a laminate from side of a second semiconductor layer; and a first DBR layer on side of a first semiconductor layer and a second DBR layer on the side of the second semiconductor layer having the laminate interposed therebetween at a position facing the opening. At the opening, an opening diameter close to the first DBR layer is larger than an opening diameter close to the second DBR layer.Type: ApplicationFiled: October 19, 2017Publication date: October 31, 2019Inventors: Tatsushi HAMAGUCHI, Jugo MITOMO, Hiroshi NAKAJIMA, Masamichi ITO, Susumu SATO, Noriyuki FUTAGAWA
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Publication number: 20190267774Abstract: A light-emitting element includes: a laminated structure body 20 which is formed from a GaN-based compound semiconductor and in which a first compound semiconductor layer 21 including a first surface 21a and a second surface 21b that is opposed to the first surface 21a, an active layer 23 that faces the second surface 21b of the first compound semiconductor layer 21, and a second compound semiconductor layer 22 including a first surface 22a that faces the active layer 23 and a second surface 22b that is opposed to the first surface 22a are laminated; a first light reflection layer 41 that is provided on the first surface 21a side of the first compound semiconductor layer 21; and a second light reflection layer 42 that is provided on the second surface 22b side of the second compound semiconductor layer 22. The first light reflection layer 41 includes a concave mirror portion 43, and the second light reflection layer 42 has a flat shape.Type: ApplicationFiled: September 1, 2017Publication date: August 29, 2019Inventors: Susumu SATO, Tatsushi HAMAGUCHI, Shoichiro IZUMI, Noriyuki FUTAGAWA, Masamichi ITO, Jugo MITOMO, Hiroshi NAKAJIMA
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Publication number: 20140151836Abstract: The optical semiconductor apparatus includes, on an n-GaAs substrate, a surface-emitting semiconductor laser device and a photodiode integrated on the periphery of the laser device with an isolation region interposed there between. The laser device is composed of an n-DBR mirror, an active region, and a p-DBR mirror and includes a columnar layered structure with its sidewall covered with an insulating film. The photodiode is formed on the substrate and has a circular layered structure wherein an i-GaAs layer and a p-GaAs layer surrounds the laser device with an isolating region interposed between the i-GaAs and p-GaAs layers and the laser device. The diameter of the photodiode is smaller than the diameter of the optical fiber core optically coupled with the optical semiconductor apparatus. Since the laser device and the photodiode are monolithically integrated, the devices do not require optical alignment, and thus, facilitate optical coupling with an optical fiber.Type: ApplicationFiled: February 5, 2014Publication date: June 5, 2014Applicant: Sony CorporationInventors: Hironobu Narui, Tomonori Hino, Nobukata Okano, Jugo Mitomo
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Patent number: 8680540Abstract: The optical semiconductor apparatus includes, on an n-GaAs substrate, a surface-emitting semiconductor laser device and a photodiode integrated on the periphery of the laser device with an isolation region interposed there between. The laser device is composed of an n-DBR mirror, an active region, and a p-DBR mirror and includes a columnar layered structure with its sidewall covered with an insulating film. The photodiode is formed on the substrate and has a circular layered structure wherein an i-GaAs layer and a p-GaAs layer surrounds the laser device with an isolating region interposed between the i-GaAs and p-GaAs layers and the laser device. The diameter of the photodiode is smaller than the diameter of the optical fiber core optically coupled with the optical semiconductor apparatus. Since the laser device and the photodiode are monolithically integrated, the devices do not require optical alignment, and thus, facilitate optical coupling with an optical fiber.Type: GrantFiled: January 3, 2007Date of Patent: March 25, 2014Assignee: Sony CorporationInventors: Hironobu Narui, Tomonori Hino, Nobukata Okano, Jugo Mitomo
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Patent number: 8344414Abstract: A semiconductor light emitting device with which a driving voltage is able to be kept low is provided. The semiconductor light emitting device includes: an n-type cladding layer; an active layer; a p-type cladding layer containing AlGaInP; an intermediate layer; and a contact layer containing GaP in this order, wherein the intermediate layer contains Ga1-aInaP (0.357?a?0.408), and has a thickness of from 10 nm to 20 nm both inclusive.Type: GrantFiled: July 12, 2010Date of Patent: January 1, 2013Assignee: Sony CorporationInventors: Tsuyoshi Nagatake, Jugo Mitomo
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Patent number: 8254790Abstract: An optical-information transmitting, lighting apparatus 2 is installed in a place where a lighting apparatus of the existing type for applying light generally used is provided. The lighting apparatus 2 comprises an illumination light source 4 for applying light and an information-transmitting unit 5 for transmitting optical information. A person who may receive information from the lighting apparatus 2 has a mobile terminal 3, which receives the optical information transmitted from the information-transmitting unit 5. Since the lighting apparatus of the existing type is widely used in our living space. Hence, the optical-information transmitting, lighting apparatus 2 can convert every place where an existing type lighting apparatus is used, into an optical communications space.Type: GrantFiled: June 14, 2011Date of Patent: August 28, 2012Assignee: Sony CorporationInventors: Nobukata Okano, Yoshiaki Watanabe, Jugo Mitomo, Tomomori Hino, Hironobu Narui
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Patent number: 8242513Abstract: Disclosed herein is a method for growing a semiconductor layer which includes the step of growing a semiconductor layer of hexagonal crystal structure having the (11-22) or (10-13) plane direction on the (1-100) plane of a substrate of hexagonal crystal structure.Type: GrantFiled: May 16, 2008Date of Patent: August 14, 2012Assignee: Sony CorporationInventors: Akira Ohmae, Masayuki Arimochi, Jugo Mitomo, Noriyuki Futagawa, Tomonori Hino