Patents by Inventor Kazumi Nakazuru
Kazumi Nakazuru 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: 11143820Abstract: An optical connector module can contribute to a reduction in size while reducing coupling loss. An optical connector module (1) according to the present disclosure includes an optical transmission line (10) including cores (12) and a cladding (11), an optical connector (20) including a first side surface (A1) facing an end face of the cores (12) and configured to optically couple to the optical transmission line (10), and a refractive index matching material (30) configured to adjust the refractive index of a space between the cores (12) and the first side surface (A1). The refractive index matching material (30) is disposed between the first side surface (A1) and the end face. A curved first lens portion (23) is provided on the first side surface (A1) at a position opposite the cores (12).Type: GrantFiled: June 16, 2017Date of Patent: October 12, 2021Assignee: KYOCERA CORPORATIONInventors: Masatoshi Tsunoda, Kazumi Nakazuru, Takahiro Suzuki
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Patent number: 10884200Abstract: Provided is an optical path converting component capable of being positioned and fixed with less work steps and with a high degree of accuracy. The disclosed optical path converting component (10) configured to optically couple an optical input/output interface (20) disposed on a board and an optical transmission path (100) includes a base body (11) disposed on an optical path connecting the optical input/output interface (20) and the optical transmission path (100) and a mounting portion (118, 121) configured to be mounted on a board (CB) by soldering.Type: GrantFiled: October 23, 2017Date of Patent: January 5, 2021Assignee: KYOCERA CorporationInventors: Takahiro Suzuki, Kazumi Nakazuru, Masatoshi Tsunoda
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Publication number: 20200103596Abstract: An optical connector module can contribute to a reduction in size while reducing coupling loss. An optical connector module (1) according to the present disclosure includes an optical transmission line (10) including cores (12) and a cladding (11), an optical connector (20) including a first side surface (A1) facing an end face of the cores (12) and configured to optically couple to the optical transmission line (10), and a refractive index matching material (30) configured to adjust the refractive index of a space between the cores (12) and the first side surface (A1). The refractive index matching material (30) is disposed between the first side surface (A1) and the end face. A curved first lens portion (23) is provided on the first side surface (A1) at a position opposite the cores (12).Type: ApplicationFiled: June 16, 2017Publication date: April 2, 2020Inventors: Masatoshi TSUNODA, Kazumi NAKAZURU, Takahiro SUZUKI
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Publication number: 20200064570Abstract: Provided is an optical path converting component capable of being positioned and fixed with less work steps and with a high degree of accuracy. The disclosed optical path converting component (10) configured to optically couple an optical input/output interface (20) disposed on a board and an optical transmission path (100) includes a base body (11) disposed on an optical path connecting the optical input/output interface (20) and the optical transmission path (100) and a mounting portion (118, 121) configured to be mounted on a board (CB) by soldering.Type: ApplicationFiled: October 23, 2017Publication date: February 27, 2020Applicant: KYOCERA CorporationInventors: Takahiro SUZUKI, Kazumi NAKAZURU, Masatoshi TSUNODA
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Patent number: 10379293Abstract: An optical connector, optical connector system, and active optical cable provided with these suffer little effect from scratches on the end face of an optical waveguide or from foreign material (dust) adhering to the end face, are manufacturable easily at low-cost, and moreover can send/receive optical signals efficiently between the end faces of the optical waveguide and an optical fiber. An optical connector (30) includes a connector body (30) provided between and connecting a substrate (10) faced by an optical input/output end face (11t) of an optical waveguide (11) and a ferrule (20) faced by an optical input/output end face (23t) of an optical fiber (23), and a lens portion (36) provided in the connector body (30) between the end face (11t) of the optical waveguide (11) and the end face (23t) of the optical fiber (23) and configured to send/receive an optical signal between the end faces (11t, 23t).Type: GrantFiled: August 23, 2016Date of Patent: August 13, 2019Assignee: KYOCERA CORPORATIONInventors: Kazumi Nakazuru, Masatoshi Tsunoda
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Publication number: 20180314009Abstract: An optical connector, optical connector system, and active optical cable provided with these suffer little effect from scratches on the end face of an optical waveguide or from foreign material (dust) adhering to the end face, are manufacturable easily at low-cost, and moreover can send/receive optical signals efficiently between the end faces of the optical waveguide and an optical fiber. An optical connector (30) includes a connector body (30) provided between and connecting a substrate (10) faced by an optical input/output end face (11t) of an optical waveguide (11) and a ferrule (20) faced by an optical input/output end face (23t) of an optical fiber (23), and a lens portion (36) provided in the connector body (30) between the end face (11t) of the optical waveguide (11) and the end face (23t) of the optical fiber (23) and configured to send/receive an optical signal between the end faces (11t, 23t).Type: ApplicationFiled: August 23, 2016Publication date: November 1, 2018Inventors: Kazumi NAKAZURU, Masatoshi TSUNODA
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Patent number: 9720186Abstract: An optical connector has a receptacle which is fastened on a substrate provided with an optical waveguide, and a plug which holds an optical fiber and is positioned with respect to the receptacle. In the receptacle, an exposing opening for exposing an end face of the optical waveguide and a pin hole which opens in an opening direction of the exposing opening are provided. The plug has a facing surface facing the receptacle; a protruding part which protrudes from the facing surface, is formed integrally with the facing surface, exposes the an end face of the optical fiber on its front end face, and is inserted into the exposing opening; and the pin which is provided on the facing surface and is fitted in the pin hole. The front end face of the protruding part is located further toward an insertion direction side than a front end of the pin.Type: GrantFiled: March 30, 2016Date of Patent: August 1, 2017Assignee: KYOCERA CORPORATIONInventors: Takahiro Matsubara, Satoshi Asai, Naoki Takahashi, Kazumi Nakazuru
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Patent number: 9429722Abstract: The optical connector has the receptacle which is fastened to the board provided with the optical waveguides and has the plug which holds the optical fibers and is connected to the receptacle. The receptacle has the positioning member which positions the optical fibers to the optical waveguides to connect them optically by abutment against the plug and has the fastening member which is fastened to the board and fastens the positioning member to the optical waveguides.Type: GrantFiled: September 30, 2013Date of Patent: August 30, 2016Assignee: Kyocera CorporationInventors: Naoki Takahashi, Kazumi Nakazuru, Takahiro Matsubara
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Publication number: 20160216459Abstract: An optical connector has a receptacle which is fastened on a substrate provided with an optical waveguide, and a plug which holds an optical fiber and is positioned with respect to the receptacle. In the receptacle, an exposing opening for exposing an end face of the optical waveguide and a pin hole which opens in an opening direction of the exposing opening are provided. The plug has a facing surface facing the receptacle; a protruding part which protrudes from the facing surface, is formed integrally with the facing surface, exposes the an end face of the optical fiber on its front end face, and is inserted into the exposing opening; and the pin which is provided on the facing surface and is fitted in the pin hole. The front end face of the protruding part is located further toward an insertion direction side than a front end of the pin.Type: ApplicationFiled: March 30, 2016Publication date: July 28, 2016Inventors: Takahiro MATSUBARA, Satoshi ASAI, Naoki TAKAHASHI, Kazumi NAKAZURU
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Publication number: 20150316731Abstract: The optical connector has the receptacle which is fastened to the board provided with the optical waveguides and has the plug which holds the optical fibers and is connected to the receptacle. The receptacle has the positioning member which positions the optical fibers to the optical waveguides to connect them optically by abutment against the plug and has the fastening member which is fastened to the board and fastens the positioning member to the optical waveguides.Type: ApplicationFiled: September 30, 2013Publication date: November 5, 2015Inventors: Naoki Takahashi, Kazumi NAKAZURU, Takahiro MATSUBARA
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Publication number: 20140301700Abstract: The optical connector has the plug for holding the plurality of optical fibers arranged in parallel in a left-right direction, and the receptacle and the board for holding the plurality of optical waveguides arranged in parallel in a left-right direction. The plug has the lower surface located along a direction the plurality of optical fibers arranged. The receptacle has, at the part which projects toward a side of the first holding member, the bottom surface which faces the lower surface and positions the lower surface, when butting joint the plurality of optical fibers and the plurality of optical waveguides. Further, a space which is located between the lower surface and the bottom surface is located below the plurality of optical fibers.Type: ApplicationFiled: July 19, 2012Publication date: October 9, 2014Inventors: Takahiro Matsubara, Kazumi Nakazuru, Kentaro Kamei, Naoki Takahashi
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Patent number: 8684766Abstract: A connector includes an insulator including contact insertion grooves and partition walls positioned therebetween, the contact insertion grooves being elongated in an insertion/removal direction of a thin plate-shaped object inserted into the insulator and arranged in a direction orthogonal thereto; and contacts inserted into the contact insertion grooves, each contact including first and second contact portions, and a connecting portion which connects the first and second contact portions to each other, wherein at least one of the first and second contact portions comes in contact with the thin plate-shaped object when the thin plate-shaped object is inserted into the insulator. A hollow portion is formed in each partition wall of the insulator so as to overlap part of each contact as viewed in a contact arranging direction, and so as to be prevented from being communicatively connected with the contact insertion grooves by the partition walls.Type: GrantFiled: September 2, 2011Date of Patent: April 1, 2014Assignee: KYOCERA Connector Products CorporationInventors: Masayoshi Kakino, Kazumi Nakazuru
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Patent number: 8179304Abstract: The invention relates to a direct-current blocking circuit, and a hybrid circuit device, a transmitter, a receiver, a transmitter-receiver and a radar device that have the direct-current blocking circuit. A dielectric substrate (2) is provided with a conductor layer (3) disposed parallel with the dielectric substrate (2), first and second planar lines (4, 5) each containing a part of the conductor layer (3), and a waveguide (6) containing a part of the conductor layer (3). The first and second planar lines (4, 5) are located on one surface (2a) side of the dielectric substrate (2) with respect to the conductor layer (3), and the waveguide (6) is located on another surface (2b) side of the dielectric substrate (2). In a transmission direction (X) of electric signals, as to the waveguide (6), its one end overlaps with one end of the first planar line (4), and its another end overlaps with one end of the second planar line (5).Type: GrantFiled: April 2, 2008Date of Patent: May 15, 2012Assignee: Kyocera CorporationInventors: Kazuki Hayata, Kazumi Nakazuru
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Publication number: 20120058662Abstract: A connector includes an insulator including contact insertion grooves and partition walls positioned therebetween, the contact insertion grooves being elongated in an insertion/removal direction of a thin plate-shaped object inserted into the insulator and arranged in a direction orthogonal thereto; and contacts inserted into the contact insertion grooves, each contact including first and second contact portions, and a connecting portion which connects the first and second contact portions to each other, wherein at least one of the first and second contact portions comes in contact with the thin plate-shaped object when the thin plate-shaped object is inserted into the insulator. A hollow portion is formed in each partition wall of the insulator so as to overlap part of each contact as viewed in a contact arranging direction, and so as to be prevented from being communicatively connected with the contact insertion grooves by the partition walls.Type: ApplicationFiled: September 2, 2011Publication date: March 8, 2012Applicant: KYOCERA ELCO CorporationInventors: Masayoshi KAKINO, Kazumi NAKAZURU
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Publication number: 20100188281Abstract: The invention relates to a direct-current blocking circuit, and a hybrid circuit device, a transmitter, a receiver, a transmitter-receiver and a radar device that have the direct-current blocking circuit. A dielectric substrate (2) is provided with a conductor layer (3) disposed parallel with the dielectric substrate (2), first and second planar lines (4, 5) each containing a part of the conductor layer (3), and a waveguide (6) containing a part of the conductor layer (3). The first and second planar lines (4, 5) are located on one surface (2a) side of the dielectric substrate (2) with respect to the conductor layer (3), and the waveguide (6) is located on another surface (2b) side of the dielectric substrate (2). In a transmission direction (X) of electric signals, as to the waveguide (6), its one end overlaps with one end of the first planar line (4), and its another end overlaps with one end of the second planar line (5).Type: ApplicationFiled: April 2, 2008Publication date: July 29, 2010Applicant: KYOCERA CORPORATIONInventors: Kazuki Hayata, Kazumi Nakazuru