Patents by Inventor Takahito Otomitsu

Takahito Otomitsu 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: 11782223
    Abstract: An optical connector includes optical fibers, a ferrule, and a pitch fixing member. The optical fibers have bare parts where coating parts have been stripped off. The ferrule has insertion holes, and the bare parts are inserted into the insertion holes. The pitch fixing member is inserted into the ferrule and has fixing parts that fix a pitch of the coating parts of the optical fibers to a pitch of the insertion holes.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 10, 2023
    Assignee: Fujikura Ltd.
    Inventors: Shuhei Kanno, Takahito Otomitsu, Kunihiko Fujiwara
  • Publication number: 20220326449
    Abstract: An optical connector includes: an optical fiber; a ferrule with an insertion hole that accommodates the optical fiber; a housing that accommodates the ferrule and that includes two lock holes formed therein; two springs that sandwich the optical fiber therebetween, and that bias the ferrule in a forward direction of the optical connector; and a support portion that supports the two springs from a rear direction of the optical connector. The support portion includes a first divided member that is combined with a second divided member and two latch portions locked in the two lock holes. When the insertion hole extends is the front and the rear directions, the two springs are disposed along left and right directions of the optical connector, and a vertical direction is orthogonal to the front, rear, right, and left directions, the two latch portions are disposed side by side in the vertical direction.
    Type: Application
    Filed: August 5, 2020
    Publication date: October 13, 2022
    Applicant: Fujikura Ltd.
    Inventors: Tomoyuki Shinoda, Shuhei Kanno, Takahito Otomitsu
  • Patent number: 11422315
    Abstract: An optical connector system includes: a first optical connector including a first ferrule and a first housing that houses the first ferrule; and a second optical connector including a second ferrule that connects to the first ferrule, a second inner housing that houses the second ferrule, and a second outer housing that houses the second inner housing. The second optical connector detachably connects to the first optical connector. The first housing includes a latch receptacle and a latch releaser. The second inner housing includes a front latch that latches to the latch receptacle and a rear latch that latches to the second outer housing.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: August 23, 2022
    Assignee: Fujikura Ltd.
    Inventor: Takahito Otomitsu
  • Publication number: 20220229245
    Abstract: An optical connector includes optical fibers, a ferrule, and a pitch fixing member. The optical fibers have bare parts where coating parts have been stripped off. The ferrule has insertion holes, and the bare parts are inserted into the insertion holes. The pitch fixing member is inserted into the ferrule and has fixing parts that fix a pitch of the coating parts of the optical fibers to a pitch of the insertion holes.
    Type: Application
    Filed: July 10, 2020
    Publication date: July 21, 2022
    Applicant: Fujikura Ltd.
    Inventors: Shuhei Kanno, Takahito Otomitsu, Kunihiko Fujiwara
  • Publication number: 20220220297
    Abstract: A resin composition for an optical communication component includes a base resin and silica. The base resin contains a polyether ether ketone resin as a main component. The content of the silica in the resin composition is 55 to 75 mass %.
    Type: Application
    Filed: July 31, 2020
    Publication date: July 14, 2022
    Applicant: Fujikura Ltd.
    Inventor: Takahito Otomitsu
  • Patent number: 11372170
    Abstract: An optical connector system includes: a first optical connector that includes a first shutter; and a second optical connector to be connected to the first optical connector. The first shutter opens by inclining toward the second optical connector when the first shutter comes into contact with the second optical connector.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: June 28, 2022
    Assignee: FUJIKURA LTD.
    Inventor: Takahito Otomitsu
  • Patent number: 11347007
    Abstract: An optical connector includes: a ferrule; a housing that houses a floating mechanism that retractably presses the ferrule; a coupling attached to an outside of the housing; and a boot attached to a rear side of a spring push of the floating mechanism. The spring push includes: a tube part; a flange section formed on an outer circumference of the tube part; a groove part formed closer to a front side of the tube part than the flange section; and a projection that protrudes outward from a portion of an outer surface of the groove part. The boot includes: a claw part that is formed on a front edge of a front opening of the boot and that hooks onto the groove part; and a recess that is formed in the front edge of the front opening of the boot and that engages with the projection.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: May 31, 2022
    Assignee: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Takahito Otomitsu
  • Publication number: 20220137303
    Abstract: A ferrule includes a ferrule body and a film. The ferrule body has a connecting end face that connects to another ferrule, a fiber hole into which an optical fiber inserts, and a recessed portion with a bottom surface that is recessed from the connecting end face at a depth. The film is disposed to cover the fiber hole that is open at a bottom surface of the recessed portion, and the film is thinner than a depth of the recessed portion.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 5, 2022
    Applicant: Fujikura Ltd.
    Inventors: Takahito Otomitsu, Shuhei Kanno, Kansei Shindo
  • Patent number: 11294125
    Abstract: An optical connector includes: a housing that retractably accommodates a ferrule; a spring that is accommodated in the housing to press the ferrule to a front side; and an engaging member connected to one end of the spring, fixed to the housing by engaging with the housing, and including a pair of arm parts arranged to sandwich the spring. When a direction perpendicular to a direction in which the spring presses the ferrule and to a direction in which the pair of arm parts is lined up is an up-down direction, window parts are arranged on both sides in the up-down direction of the housing. The engaging member includes: claw parts that are provided on an upper and a lower side of the pair of arm parts to engage with the window parts; and deformation parts that allow the claw parts to be displaced in the up-down direction.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: April 5, 2022
    Assignee: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Takahito Otomitsu, Shuhei Kanno, Kunihiko Fujiwara
  • Patent number: 11275218
    Abstract: An optical connector includes: a ferrule including a guide pin hole, a plurality of fiber holes lined up in a width direction of the optical fiber, and an inclined end face; a housing in which the ferrule is retractably housed; and an application part that applies an upward force to the ferrule in an upward/downward direction when the optical connector connects with a counterpart connector in a connecting/disconnecting direction. The upward/downward direction is a height direction of the optical connector and is orthogonal to both the connecting/disconnecting direction and the width direction. The inclined end face projects upward toward the counterpart connector.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: March 15, 2022
    Assignee: FUJIKURA LTD.
    Inventors: Takahito Otomitsu, Shuhei Kanno, Shunsuke Fujita, Kunihiko Fujiwara
  • Publication number: 20210341680
    Abstract: An optical connector includes: a ferrule; a housing that houses a floating mechanism that retractably presses the ferrule; a coupling attached to an outside of the housing; and a boot attached to a rear side of a spring push of the floating mechanism. The spring push includes: a tube part; a flange section formed on an outer circumference of the tube part; a groove part formed closer to a front side of the tube part than the flange section; and a projection that protrudes outward from a portion of an outer surface of the groove part. The boot includes: a claw part that is formed on a front edge of a front opening of the boot and that hooks onto the groove part; and a recess that is formed in the front edge of the front opening of the boot and that engages with the projection.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 4, 2021
    Applicant: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Takahito Otomitsu
  • Publication number: 20210341683
    Abstract: An optical connector system includes: a first optical connector that includes a first shutter; and a second optical connector to be connected to the first optical connector. The first shutter opens by inclining toward the second optical connector when the first shutter comes into contact with the second optical connector.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 4, 2021
    Applicant: Fujikura Ltd.
    Inventor: Takahito Otomitsu
  • Patent number: 11054589
    Abstract: An optical connector includes: an optical receptacle; and an optical plug that is attachable to and detachable from the optical receptacle. The optical receptacle includes receptacle-side connector modules that each include: an outer housing; an inner housing; a receptacle-side ferrule housed in the inner housing; and a receptacle-side spring that applies pressure to the receptacle-side ferrule. The optical plug includes plug-side connector modules that each include: a plug-side housing; a plug-side ferrule housed in the plug-side housing; and a plug-side spring that applies pressure to the plug-side ferrule. The inner housing includes an engagement section. The plug-side housing includes an engaged section.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: July 6, 2021
    Assignees: Fujikura Ltd., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takahito Otomitsu, Mitsuru Kihara, Ryo Koyama
  • Publication number: 20210199895
    Abstract: An optical connector system includes: a first optical connector including a first ferrule and a first housing that houses the first ferrule; and a second optical connector including a second ferrule that connects to the first ferrule, a second inner housing that houses the second ferrule, and a second outer housing that houses the second inner housing. The second optical connector detachably connects to the first optical connector. The first housing includes a latch receptacle and a latch releaser. The second inner housing includes a front latch that latches to the latch receptacle and a rear latch that latches to the second outer housing.
    Type: Application
    Filed: May 20, 2019
    Publication date: July 1, 2021
    Applicant: FUJIKURA LTD.
    Inventor: Takahito Otomitsu
  • Publication number: 20210173154
    Abstract: An optical connector includes: a ferrule including a guide pin hole, a plurality of fiber holes lined up in a width direction of the optical fiber, and an inclined end face; a housing in which the ferrule is retractably housed; and an application part that applies an upward force to the ferrule in an upward/downward direction when the optical connector connects with a counterpart connector in a connecting/disconnecting direction. The upward/downward direction is a height direction of the optical connector and is orthogonal to both the connecting/disconnecting direction and the width direction. The inclined end face projects upward toward the counterpart connector.
    Type: Application
    Filed: November 9, 2018
    Publication date: June 10, 2021
    Applicant: FUJIKURA LTD.
    Inventors: Takahito Otomitsu, Shuhei Kanno, Shunsuke Fujita, Kunihiko Fujiwara
  • Publication number: 20210080656
    Abstract: An optical connector includes: a housing that retractably accommodates a ferrule; a spring that is accommodated in the housing to press the ferrule to a front side; and an engaging member connected to one end of the spring, fixed to the housing by engaging with the housing, and including a pair of arm parts arranged to sandwich the spring. When a direction perpendicular to a direction in which the spring presses the ferrule and to a direction in which the pair of arm parts is lined up is an up-down direction, window parts are arranged on both sides in the up-down direction of the housing. The engaging member includes: claw parts that are provided on an upper and a lower side of the pair of arm parts to engage with the window parts; and deformation parts that allow the claw parts to be displaced in the up-down direction.
    Type: Application
    Filed: October 16, 2018
    Publication date: March 18, 2021
    Applicant: FUJIKURA LTD.
    Inventors: Shunsuke Fujita, Takahito Otomitsu, Shuhei Kanno, Kunihiko Fujiwara
  • Patent number: 10914899
    Abstract: An optical connector includes: a plurality of first ferrules; a first housing that houses the plurality of first ferrules; a plurality of second ferrules; and a second housing that houses the plurality of second ferrules. The first housing includes: a plurality of first inner housings; and a first outer housing. The optical connector butt-couples the first ferrules and the second ferrules, respectively, by mating the first housing and the second housing. Each of the plurality of first inner housings houses at least one of the plurality of first ferrules. The first outer housing is releasable from the plurality of first inner housings. The plurality of first inner housings and the second housing are mated in stages. When each of the plurality of first inner housings and the second housing are mated, each of the plurality of first inner housings to be mated is released from the first outer housing.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: February 9, 2021
    Assignee: Fujikura Ltd.
    Inventor: Takahito Otomitsu
  • Publication number: 20200257064
    Abstract: An optical connector includes: a plurality of first ferrules; a first housing that houses the plurality of first ferrules; a plurality of second ferrules; and a second housing that houses the plurality of second ferrules. The first housing includes: a plurality of first inner housings; and a first outer housing. The optical connector butt-couples the first ferrules and the second ferrules, respectively, by mating the first housing and the second housing. Each of the plurality of first inner housings houses at least one of the plurality of first ferrules. The first outer housing is releasable from the plurality of first inner housings. The plurality of first inner housings and the second housing are mated in stages. When each of the plurality of first inner housings and the second housing are mated, each of the plurality of first inner housings to be mated is released from the first outer housing.
    Type: Application
    Filed: June 28, 2018
    Publication date: August 13, 2020
    Applicant: Fujikura Ltd.
    Inventor: Takahito Otomitsu
  • Publication number: 20200249404
    Abstract: An optical connector includes: an optical receptacle; and an optical plug that is attachable to and detachable from the optical receptacle. The optical receptacle includes receptacle-side connector modules that each include: an outer housing; an inner housing; a receptacle-side ferrule housed in the inner housing; and a receptacle-side spring that applies pressure to the receptacle-side ferrule. The optical plug includes plug-side connector modules that each include: a plug-side housing; a plug-side ferrule housed in the plug-side housing; and a plug-side spring that applies pressure to the plug-side ferrule. The inner housing includes an engagement section. The plug-side housing includes an engaged section.
    Type: Application
    Filed: December 28, 2017
    Publication date: August 6, 2020
    Applicants: Fujikura Ltd., NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Takahito Otomitsu, Mitsuru Kihara, Ryo Koyama
  • Patent number: 10422964
    Abstract: An optical connector attached to a plurality of buffered optical fibers each including: a bare optical fiber; and a tube in which the bare optical fiber is inserted in. A multi-fiber optical connector is connected to first ends of the buffered optical fibers, and a plurality of single-fiber optical connectors are respectively connected to second ends of the buffered optical fibers. The multi-fiber optical connector includes: a ferrule fixed to ends of the bare optical fibers; a connector housing that houses the ferrule therein; and a tube fixing portion that fixes the tubes to the connector housing. The buffered optical fiber has a bare fiber fixing portion in which the bare optical fiber and the tube are fixed at a location closer to the ferrule than the tube fixing portion within the multi-fiber optical connector.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: September 24, 2019
    Assignee: FUJIKURA LTD.
    Inventor: Takahito Otomitsu