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).

  • Patent number: 11143820
    Abstract: 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: Grant
    Filed: June 16, 2017
    Date of Patent: October 12, 2021
    Assignee: KYOCERA CORPORATION
    Inventors: Masatoshi Tsunoda, Kazumi Nakazuru, Takahiro Suzuki
  • Patent number: 10884200
    Abstract: 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: Grant
    Filed: October 23, 2017
    Date of Patent: January 5, 2021
    Assignee: KYOCERA Corporation
    Inventors: Takahiro Suzuki, Kazumi Nakazuru, Masatoshi Tsunoda
  • Publication number: 20200103596
    Abstract: 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: Application
    Filed: June 16, 2017
    Publication date: April 2, 2020
    Inventors: Masatoshi TSUNODA, Kazumi NAKAZURU, Takahiro SUZUKI
  • Publication number: 20200064570
    Abstract: 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: Application
    Filed: October 23, 2017
    Publication date: February 27, 2020
    Applicant: KYOCERA Corporation
    Inventors: Takahiro SUZUKI, Kazumi NAKAZURU, Masatoshi TSUNODA
  • Patent number: 10379293
    Abstract: 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: Grant
    Filed: August 23, 2016
    Date of Patent: August 13, 2019
    Assignee: KYOCERA CORPORATION
    Inventors: Kazumi Nakazuru, Masatoshi Tsunoda
  • Publication number: 20180314009
    Abstract: 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: Application
    Filed: August 23, 2016
    Publication date: November 1, 2018
    Inventors: Kazumi NAKAZURU, Masatoshi TSUNODA
  • Patent number: 9720186
    Abstract: 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: Grant
    Filed: March 30, 2016
    Date of Patent: August 1, 2017
    Assignee: KYOCERA CORPORATION
    Inventors: Takahiro Matsubara, Satoshi Asai, Naoki Takahashi, Kazumi Nakazuru
  • Patent number: 9429722
    Abstract: 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: Grant
    Filed: September 30, 2013
    Date of Patent: August 30, 2016
    Assignee: Kyocera Corporation
    Inventors: Naoki Takahashi, Kazumi Nakazuru, Takahiro Matsubara
  • Publication number: 20160216459
    Abstract: 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: Application
    Filed: March 30, 2016
    Publication date: July 28, 2016
    Inventors: Takahiro MATSUBARA, Satoshi ASAI, Naoki TAKAHASHI, Kazumi NAKAZURU
  • Publication number: 20150316731
    Abstract: 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: Application
    Filed: September 30, 2013
    Publication date: November 5, 2015
    Inventors: Naoki Takahashi, Kazumi NAKAZURU, Takahiro MATSUBARA
  • Publication number: 20140301700
    Abstract: 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: Application
    Filed: July 19, 2012
    Publication date: October 9, 2014
    Inventors: Takahiro Matsubara, Kazumi Nakazuru, Kentaro Kamei, Naoki Takahashi
  • Patent number: 8684766
    Abstract: 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: Grant
    Filed: September 2, 2011
    Date of Patent: April 1, 2014
    Assignee: KYOCERA Connector Products Corporation
    Inventors: Masayoshi Kakino, Kazumi Nakazuru
  • Patent number: 8179304
    Abstract: 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: Grant
    Filed: April 2, 2008
    Date of Patent: May 15, 2012
    Assignee: Kyocera Corporation
    Inventors: Kazuki Hayata, Kazumi Nakazuru
  • Publication number: 20120058662
    Abstract: 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: Application
    Filed: September 2, 2011
    Publication date: March 8, 2012
    Applicant: KYOCERA ELCO Corporation
    Inventors: Masayoshi KAKINO, Kazumi NAKAZURU
  • Publication number: 20100188281
    Abstract: 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: Application
    Filed: April 2, 2008
    Publication date: July 29, 2010
    Applicant: KYOCERA CORPORATION
    Inventors: Kazuki Hayata, Kazumi Nakazuru