Patents by Inventor Miwa Okubo
Miwa Okubo 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: 8180189Abstract: An optical module includes an optical waveguide including a plurality of waveguide cores through which light propagates, a clad configured to trap the light in the waveguide cores, a plurality of fiber guide grooves in which optical fibers are inserted, the fiber guide grooves being arranged in parallel, and an adhesive spread groove configured to connect the fiber guide grooves and provided at leading ends of the fiber guide grooves with which the optical fibers contact; and a fixing member fixed to the optical waveguide with an adhesive while covering the fiber guide grooves. The fiber guide grooves have side walls including support projections configured to support, align, and optical couple the optical fibers to the waveguide cores, and adhesive recesses configured to define gaps between outer peripheral surfaces of the optical fibers and the fiber guide grooves so that the adhesive spreads in the gaps.Type: GrantFiled: January 29, 2009Date of Patent: May 15, 2012Assignee: Sony CorporationInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse
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Patent number: 8100589Abstract: An optical module includes an optical waveguide including a waveguide core through which light propagates and a clad configured to trap the light in the waveguide core, and a circuit board on which a surface-type optical element is mounted. The optical waveguide further includes a reflective surface from which an end face of the waveguide core is exposed, the reflective surface being provided on an inclined face at one end face of the optical waveguide core in an extending direction of the waveguide core, and an element mount opening provided in the clad such as to be opposite from the reflective surface, the element mount opening having a size such as to contain the optical element. The optical waveguide is mounted on the circuit board while the optical element is contained in the element mount opening and is aligned with the reflective surface of the optical waveguide.Type: GrantFiled: January 29, 2009Date of Patent: January 24, 2012Assignee: Sony CorporationInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse
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Publication number: 20110142090Abstract: A laser diode includes: a substrate; a semiconductor layer including a lower cladding layer, an active layer, and an upper cladding layer; a strip-shaped ridge provided on an upper cladding layer side in the semiconductor layer; and a pair of resonator end faces sandwiching the semiconductor layer and the ridge. The substrate includes strip-shaped grooves provided on both sides of a portion facing the ridge along the portion facing the ridge, and extending in a direction different from a direction orthogonal to the extending direction of the ridge, and L1, L2, and L3 satisfy the following relationship, L1<L3/2 L2?L3/3 where L1 is a length of each groove, L2 is a length of a groove non-form rectangular region in the extending direction of the ridge, the groove non-form rectangular region being sandwiched by the grooves from the extending direction of the ridge, and L3 is a resonator length.Type: ApplicationFiled: December 7, 2010Publication date: June 16, 2011Applicant: Sony CorporationInventors: Mikihiro Yokozeki, Junji Sawahata, Katsunori Yanashima, Miwa Okubo
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Patent number: 7590315Abstract: An optical waveguide contains a core layer in which light is transferred, and a cladding layer that clads the core layer. The core layer has an inclined end surface across a direction where the core layer extends. The inclined end surface reflects light from the core layer to outside or light from the outside to the core layer. The cladding layer has an end portion that extends to the inclined surface of the core layer. The cladding layer includes a system that prevents an adhesive agent from flowing out.Type: GrantFiled: November 27, 2007Date of Patent: September 15, 2009Assignee: Sony CorporationInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse, Momoko Eguchi
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Publication number: 20090214157Abstract: An optical module includes an optical waveguide including a plurality of waveguide cores through which light propagates, a clad configured to trap the light in the waveguide cores, a plurality of fiber guide grooves in which optical fibers are inserted, the fiber guide grooves being arranged in parallel, and an adhesive spread groove configured to connect the fiber guide grooves and provided at leading ends of the fiber guide grooves with which the optical fibers contact; and a fixing member fixed to the optical waveguide with an adhesive while covering the fiber guide grooves. The fiber guide grooves have side walls including support projections configured to support, align, and optical couple the optical fibers to the waveguide cores, and adhesive recesses configured to define gaps between outer peripheral surfaces of the optical fibers and the fiber guide grooves so that the adhesive spreads in the gaps.Type: ApplicationFiled: January 29, 2009Publication date: August 27, 2009Applicant: Sony CorporationInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse
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Publication number: 20090214156Abstract: An optical module includes an optical waveguide including a waveguide core through which light propagates and a clad configured to trap the light in the waveguide core, and a circuit board on which a surface-type optical element is mounted. The optical waveguide further includes a reflective surface from which an end face of the waveguide core is exposed, the reflective surface being provided on an inclined face at one end face of the optical waveguide core in an extending direction of the waveguide core, and an element mount opening provided in the clad such as to be opposite from the reflective surface, the element mount opening having a size such as to contain the optical element. The optical waveguide is mounted on the circuit board while the optical element is contained in the element mount opening and is aligned with the reflective surface of the optical waveguide.Type: ApplicationFiled: January 29, 2009Publication date: August 27, 2009Applicant: Sony CorporationInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse
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Patent number: 7454104Abstract: An optical module has at least two optical elements mounted in parallel with each other. The module also has a first electrode pad which is formed between the paralleled optical elements and grounded to a ground potential and a second electrode pad which is arranged along a line that is intersected with a direction in which the optical elements are arranged, which faces the first electrode pad and is grounded to the ground potential. The module further has a conductive shield member which is connected to the first electrode pad and the second electrode pad and placed between electrical signal transmission paths each connected to the optical elements.Type: GrantFiled: July 11, 2006Date of Patent: November 18, 2008Assignee: Sony CorporationInventors: Hidehiko Nakata, Takahiro Arakida, Terukazu Naruse, Miwa Okubo, Kazuyoshi Yamada, Momoko Eguchi
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Publication number: 20080138007Abstract: An optical waveguide contains a core layer in which light is transferred, and a cladding layer that clads the core layer. The core layer has an inclined end surface across a direction where the core layer extends. The inclined end surface reflects light from the core layer to outside or light from the outside to the core layer. The cladding layer has an end portion that extends to the inclined surface of the core layer. The cladding layer includes a system that prevents an adhesive agent from being flown out.Type: ApplicationFiled: November 27, 2007Publication date: June 12, 2008Applicant: SONY CORPORATIONInventors: Miwa Okubo, Takahiro Arakida, Hidehiko Nakata, Terukazu Naruse, Momoko Eguchi
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Patent number: 7373063Abstract: An optical waveguide module has a planar type optical waveguide having at least one core, an optical fiber for connecting with the core of the optical waveguide optically, and an optical element for connecting the core of the optical waveguide optically. The optical waveguide includes a groove for allowing an optical fiber to be inserted thereinto and aligning the optical fiber with the core to connect the optical fiber and the core optically. A first edge of the optical waveguide, which traverses the core, is tapered and an edge of the core, which is exposed in the first edge of the optical waveguide, is formed as a reflection surface. A planar type optical element is mounted as the optical element at a position that is opposite to the reflection surface to connect the planar type optical element with the core optically through the reflection surface.Type: GrantFiled: December 16, 2005Date of Patent: May 13, 2008Assignee: Sony CorporationInventors: Hidehiko Nakata, Takahiro Arakida, Terukazu Naruse, Miwa Okubo, Kazuyoshi Yamada, Momoko Eguchi
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Publication number: 20070019902Abstract: An optical module has at least two optical elements mounted in parallel with each other. The module also has a first electrode pad which is formed between the paralleled optical elements and grounded to a ground potential and a second electrode pad which is arranged along a line that is intersected with a direction in which the optical elements are arranged, which faces the first electrode pad and is grounded to the ground potential. The module further has a conductive shield member which is connected to the first electrode pad and the second electrode pad and placed between electrical signal transmission paths each connected to the optical elements.Type: ApplicationFiled: July 11, 2006Publication date: January 25, 2007Inventors: Hidehiko Nakata, Takahiro Arakida, Terukazu Naruse, Miwa Okubo, Kazuyoshi Yamada, Momoko Eguchi
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Publication number: 20060158495Abstract: An ink-jet recording method is provided in which if high-speed photographic printing is executed with the color interval being 200 msec or less, a high-definition image can be obtained without blots or a mixture of colors. In the ink-jet recording method, recording is executed by discharging inks of a plurality of colors from a discharge opening as droplets of ink to be attached onto a recording material, wherein in the case where the interval between a discharge of an ink of a first color and a discharge of an ink of a second color is 200 msec or less, inks whose surface tension is 25 to 45 mN/m at 23° C. are used for the above-described inks of each color.Type: ApplicationFiled: July 7, 2004Publication date: July 20, 2006Inventor: Miwa Okubo
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Publication number: 20060140546Abstract: An optical waveguide module has a planar type optical waveguide having at least one core, an optical fiber for connecting with the core of the optical waveguide optically, and an optical element for connecting the core of the optical waveguide optically. The optical waveguide includes a groove for allowing an optical fiber to be inserted thereinto and aligning the optical fiber with the core to connect the optical fiber and the core optically. A first edge of the optical waveguide, which traverses the core, is tapered and an edge of the core, which is exposed in the first edge of the optical waveguide, is formed as a reflection surface. A planar type optical element is mounted as the optical element at a position that is opposite to the reflection surface to connect the planar type optical element with the core optically through the reflection surface.Type: ApplicationFiled: December 16, 2005Publication date: June 29, 2006Inventors: Hidehiko Nakata, Takahiro Arakida, Terukazu Naruse, Miwa Okubo, Kazuyoshi Yamada, Momoko Eguchi
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Patent number: RE46633Abstract: An optical module has at least two optical elements mounted in parallel with each other. The module also has a first electrode pad which is formed between the paralleled optical elements and grounded to a ground potential and a second electrode pad which is arranged along a line that is intersected with a direction in which the optical elements are arranged, which faces the first electrode pad and is grounded to the ground potential. The module further has a conductive shield member which is connected to the first electrode pad and the second electrode pad and placed between electrical signal transmission paths each connected to the optical elements.Type: GrantFiled: February 18, 2016Date of Patent: December 12, 2017Assignee: SONY CORPORATIONInventors: Hidehiko Nakata, Takahiro Arakida, Terukazu Naruse, Miwa Okubo, Kazuyoshi Yamada, Momoko Eguchi