Patents by Inventor Akito Nishimura

Akito Nishimura 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).

  • Publication number: 20220075124
    Abstract: A ferrule structure includes a ferrule including a plurality of unit holes, and a plurality of lens units, wherein each lens unit includes a lens part attached to an end part of an optical fiber, and each lens unit is molded from a resin for transmittance an optical signal, and each lens unit is to be inserted in one of the unit holes.
    Type: Application
    Filed: October 3, 2019
    Publication date: March 10, 2022
    Applicant: FUJIKURA LTD.
    Inventors: Hirotaka Asada, Akihiro Nakama, Akito Nishimura, Takahiko Sabano
  • Patent number: 11143825
    Abstract: A ferrule with fiber holes includes: a resin-molded portion molded by a resin; and a reinforcement member embedded in the resin-molded portion and that has a smaller linear expansion coefficient than the resin-molded portion. The reinforcement member includes fiber insertion portions that are parallel to the fiber holes. The fiber holes are formed by the resin that entered the fiber insertion portions.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: October 12, 2021
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Publication number: 20210239909
    Abstract: An optical connector system includes: an optical path-changing device including a fiber-holding part that holds a single-mode optical fiber along a first direction, and a reflection surface that reflects an optical signal; and a relay device on a substrate. The substrate includes a grating coupler for inputting/outputting an optical signal in a second direction that is inclined with respect to a direction perpendicular to a surface of the substrate. The optical path-changing device and the relay device each have an input/output surface to/from which the optical signal is inputted/outputted. A first convex lens is disposed on the input/output surface of the optical path-changing device. A second convex lens is disposed on the input/output surface of the relay device.
    Type: Application
    Filed: March 26, 2019
    Publication date: August 5, 2021
    Applicant: Fujikura Ltd.
    Inventors: Takahiko Sabano, Akito Nishimura, Susumu Nakaya, Hirotaka Asada
  • Publication number: 20210132303
    Abstract: A ferrule with fiber holes includes: a resin-molded portion molded by a resin; and a reinforcement member embedded in the resin-molded portion and that has a smaller linear expansion coefficient than the resin-molded portion. The reinforcement member includes fiber insertion portions that are parallel to the fiber holes. The fiber holes are formed by the resin that entered the fiber insertion portions.
    Type: Application
    Filed: October 17, 2017
    Publication date: May 6, 2021
    Applicant: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Patent number: 10451822
    Abstract: Disclosed is manufacturing method of an optical module including an optical/electrical converter, a receptacle, and a substrate, the method including: the receptacle that has a guide portion that aligns an optical connector ferrule that holds an end portion of an optical fiber and that has a device accommodating portion that matches with a profile of the optical/electrical converter; a process of accommodating the optical/electrical converter in the device accommodating portion; a process of securing the optical/electrical converter to the receptacle; and a process of electrically connecting to the substrate that electrically connects to the optical/electrical converter the optical/electrical converter secured to the receptacle.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 22, 2019
    Assignee: Fujikura Ltd.
    Inventor: Akito Nishimura
  • Patent number: 9829658
    Abstract: Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: November 28, 2017
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Publication number: 20170219782
    Abstract: Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.
    Type: Application
    Filed: April 17, 2017
    Publication date: August 3, 2017
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Patent number: 9720193
    Abstract: Disclosed is an optical-connector fixing member including: an upper plate part for pressing, toward a receptacle provided on a substrate, a ferrule that holds an end section of an optical fiber; and a pair of engagement side plate parts formed so as to extend from the upper plate part toward the substrate, each engagement side plate part having a connector-side engagement section that engages with a receptacle-side engagement section formed on a side surface of the receptacle. An engaged state in which the connector-side engagement section is engaged with the receptacle-side engagement section is releasable by inserting an end section of a tool into a gap between each engagement side plate part and a member that is arranged between the pair of engagement side plate parts, and spreading each engagement side plate part outward.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 1, 2017
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Patent number: 9638881
    Abstract: According to an aspect of the apparatus of the present invention, wind generated by a cooling fan blows in a housing, and a port is optically connected with an optical module via an optical fiber. Further, a shielding wall is provided to an optical fiber arranging member, which supports and guides the optical fiber, so as to prevent the optical fiber from being exposed to the wind.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 2, 2017
    Assignee: FUJIKURA LTD.
    Inventors: Akito Nishimura, Kenji Kohara
  • Patent number: 9632258
    Abstract: Disclosed is an optical connector ferrule including a main body portion having inside a plurality of optical paths that are parallel that are to each other; and a reinforcing member having a face parallel to an alignment direction of the plurality of the optical paths and having a linear expansion coefficient that is smaller than the linear expansion coefficient of the main body portion, wherein the reinforcing member has on a face of the optical path side thereof at least two limiting portions each having a face that limits an expansion and a contraction of the main body portion in the arrangement direction, the limiting portions being spaced apart in the arrangement direction.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: April 25, 2017
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Publication number: 20160282568
    Abstract: Disclosed is an optical connector ferrule including a main body portion having inside a plurality of optical paths that are parallel that are to each other; and a reinforcing member having a face parallel to an alignment direction of the plurality of the optical paths and having a linear expansion coefficient that is smaller than the linear expansion coefficient of the main body portion, wherein the reinforcing member has on a face of the optical path side thereof at least two limiting portions each having a face that limits an expansion and a contraction of the main body portion in the arrangement direction, the limiting portions being spaced apart in the arrangement direction.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 29, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Publication number: 20160282576
    Abstract: An optical repeater to be arranged between a substrate and an optical connector, the optical repeater includes: a body part including a plurality of optical paths to transmit an optical signal between the substrate and the optical connector, a substrate-side end-face in which one end of each of the optical paths opposes the substrate, and a connector connecting part to connect another end of each of the optical paths to the optical connector, the body part being configured from a material with a greater coefficient of linear expansion than that of the substrate; and a reinforcing member arranged so as to surround the optical paths in a side to the substrate-side end-face, the reinforcing member being configured from a material with a smaller coefficient of linear expansion than that of the body part.
    Type: Application
    Filed: February 29, 2016
    Publication date: September 29, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Publication number: 20160282570
    Abstract: Disclosed is manufacturing method of an optical module including an optical/electrical converter, a receptacle, and a substrate, the method including: the receptacle that has a guide portion that aligns an optical connector ferrule that holds an end portion of an optical fiber and that has a device accommodating portion that matches with a profile of the optical/electrical converter; a process of accommodating the optical/electrical converter in the device accommodating portion; a process of securing the optical/electrical converter to the receptacle; and a process of electrically connecting to the substrate that electrically connects to the optical/electrical converter the optical/electrical converter secured to the receptacle.
    Type: Application
    Filed: March 22, 2016
    Publication date: September 29, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Patent number: 9435968
    Abstract: An optical repeater to be arranged between a substrate and an optical connector, the optical repeater includes: a body part including a plurality of optical paths to transmit an optical signal between the substrate and the optical connector, a substrate-side end-face in which one end of each of the optical paths opposes the substrate, and a connector connecting part to connect another end of each of the optical paths to the optical connector, the body part being configured from a material with a greater coefficient of linear expansion than that of the substrate; and a reinforcing member arranged so as to surround the optical paths in a side to the substrate-side end-face, the reinforcing member being configured from a material with a smaller coefficient of linear expansion than that of the body part.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: September 6, 2016
    Assignee: FUJIKURA LTD.
    Inventor: Akito Nishimura
  • Patent number: 9429717
    Abstract: A ferrule of the present invention includes a positioning mechanism for positioning an optical fiber, and a recess having at least a first inner wall for allowing a front end of the optical fiber portion positioned by the positioning mechanism to protrude, and a second inner wall opposite to the first inner wall. A distance between the first inner wall and the second inner wall is less than or equal to four times the outer diameter of the optical fiber. Adhesive is filled into the recess and cured in a state in which the optical fiber protrudes from the first inner wall and substantially contacts the second inner wall to fix the optical fiber.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 30, 2016
    Assignee: FUJIKURA LTD.
    Inventors: Akihiro Nakama, Tatsuya Ohta, Akito Nishimura, Terutake Kobayashi, Kunihiko Fujiwara
  • Patent number: 9377588
    Abstract: A ferrule of the invention includes: a ferrule main body having a front edge and a rear edge; a fiber insertion hole into which an optical fiber is to be inserted; a recess provided at a top surface of the ferrule main body, having a reflection surface converting an optical path of a front end of the optical fiber into an optical path of a light emission-launch end provided at a lower surface side of the ferrule main body; a light emission-launch portion provided on the optical path of the light emission-launch end at a lower surface of the ferrule main body; a locating pin provided closer to the front edge than the light emission-launch portion at the lower surface of the ferrule main body; and a recessed portion provided between the locating pin at the lower surface of the ferrule main body and the light emission-launch portion.
    Type: Grant
    Filed: March 29, 2013
    Date of Patent: June 28, 2016
    Assignee: FUJIKURA LTD.
    Inventors: Akito Nishimura, Shota Numata
  • Publication number: 20160161682
    Abstract: Disclosed is a tool for releasing an engaged state in which a receptacle-side engagement section formed on a side surface of a receptacle provided on a substrate is engaged with a connector-side engagement section of an optical connector that is attachable to and detachable from the receptacle. The tool includes: release claws to be inserted into respective gaps, each gap being formed between a member arranged between a pair of engagement side plate parts each being provided with the connector-side engagement section, and each engagement side plate part; and a guide part that comes into opposition with a side surface of the optical connector or the receptacle. By bringing the guide part into opposition with the side surface and sliding the release claws toward the substrate, the engagement side plate parts are spread outward by the release claws and the engaged state is released.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 9, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Publication number: 20160161688
    Abstract: Disclosed is an optical-connector fixing member including: an upper plate part for pressing, toward a receptacle provided on a substrate, a ferrule that holds an end section of an optical fiber; and a pair of engagement side plate parts formed so as to extend from the upper plate part toward the substrate, each engagement side plate part having a connector-side engagement section that engages with a receptacle-side engagement section formed on a side surface of the receptacle. An engaged state in which the connector-side engagement section is engaged with the receptacle-side engagement section is releasable by inserting an end section of a tool into a gap between each engagement side plate part and a member that is arranged between the pair of engagement side plate parts, and spreading each engagement side plate part outward.
    Type: Application
    Filed: December 1, 2015
    Publication date: June 9, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Publication number: 20160161689
    Abstract: Disclosed is a connector holder including: a base body part; a pair of side wall parts that projects from the base body part; and a connector housing part that is formed by the base body part and the pair of side wall parts, and that is for housing an optical connector body which holds an end section of an optical fiber. A recess is formed in an inner surface of each of the side wall parts, the recesses being formed so as to oppose one another. A gap is formed between a side surface of the optical connector body and each recess when the optical connector body is housed in the connector housing part.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 9, 2016
    Applicant: FUJIKURA LTD.
    Inventor: Akito NISHIMURA
  • Patent number: 9158071
    Abstract: An optical path-changing member comprises a member main body which is made of a transparent material and in which a reflection section optically connecting the optical fiber to the light input and output end is formed, wherein the reflection section is a first lens having a concave shape when viewed from an incident direction and making light incident on the inside of the member main body from one of the optical fiber and the light input and output end be internally reflected in the member main body and directed to the other of the optical fiber and the light input and output end, a second lens having a convex shape toward the optical component is formed in a light incidence and emission surface of the member main body, that faces the optical component.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: October 13, 2015
    Assignee: FUJIKURA LTD.
    Inventors: Akito Nishimura, Shota Numata