公开(公告)号：US20210132299A1

公开(公告)日：2021-05-06

申请号：US16492309

申请日：2018-03-06

Applicant: FUJIKURA LTD. ,  TOMOEGAWA CO., LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Hirotaka Asada ,  Makoto Goto ,  Masayoshi Suzuki

IPC: G02B6/38 ,  B08B7/00

Abstract: A cleaning tool that cleans an optical connector includes an adhesive body that contacts an optical signal region of the optical connector where an optical signal enters and is emitted from the optical connector; and a base that holds the adhesive body. The base includes a first protrusion on a holding surface of a holding part that holds the adhesive body. The first protrusion is disposed at a rear side of a section of the adhesive body and is in contact with the optical signal region.

公开(公告)号：US10768380B2

公开(公告)日：2020-09-08

申请号：US16471007

申请日：2017-12-07

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Hirotaka Asada ,  Kazuaki Toba ,  Masanari Yamamoto ,  Ryohei Takahashi

IPC: G02B6/38 ,  G02B6/42

Abstract: A ferrule that holds an end part of an optical fiber includes a fiber hole into which the optical fiber is inserted and an upper wall part and a lower wall part that define a hollow adhesive filling part, where the lower wall part faces the upper wall part. The adhesive filling part is filled with an adhesive applied between the optical fiber inserted in the fiber hole and an inner wall surface of the adhesive filling part. The upper wall part has an upper opening through which the adhesive passes into the adhesive filling part, and the lower wall part has a lower opening that ventilates the adhesive filling part to outside of the ferrule.

公开(公告)号：US20200016632A1

公开(公告)日：2020-01-16

申请号：US16487269

申请日：2018-03-06

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Junichi Nakane ,  Kunihiko Fujiwara ,  Shigeo Takahashi ,  Hirotaka Asada ,  Makoto Goto ,  Masayoshi Suzuki

IPC: B08B1/00 ,  G02B6/26 ,  G02B6/38

Abstract: A cleaning tool that cleans an optical connector includes an adhesive body that contacts an optical signal region of the optical connector where an optical signal enters and is emitted from the optical connector. The adhesive body includes a protrusion that protrudes in a region—that contacts the optical signal region.

公开(公告)号：US10359581B2

公开(公告)日：2019-07-23

申请号：US16125937

申请日：2018-09-10

Applicant: FUJIKURA LTD.

Inventor： Daiki Takeda ,  Shigeo Takahashi

IPC: G02B6/38

Abstract: A clamp member includes: a body part that includes a fiber insertion hole where an optical fiber is inserted and a hole for tension member where a tension member is inserted; and an anchoring screw that fixes the tension member to the body part. The clamp member is fixed to an end of an optical cable that includes the optical fiber and the tension member, and the clamp member is fixed to and housed in an outer housing of an optical connector.

公开(公告)号：US20180120516A1

公开(公告)日：2018-05-03

申请号：US15560852

申请日：2016-01-29

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Tatsuya Ota

IPC: G02B6/38

CPC classification number: G02B6/3853 ,  G02B6/32 ,  G02B6/36 ,  G02B6/3821 ,  G02B6/3833 ,  G02B6/3861 ,  G02B6/3867 ,  G02B6/3882 ,  G02B6/3885 ,  G02B6/3887 ,  G02B6/4214 ,  G02B6/4403

Abstract: A ferrule holds end portions of optical fibers and includes: a plurality of optical fiber holes arranged in a predetermined direction, wherein the optical fibers are inserted into the plurality of optical fiber holes; and an adhesive-filling section that is filled with an adhesive and internally includes an opening surface of the plurality of optical fiber holes and an opposed surface opposed to the opening surface. The adhesive-filling section includes an upper side opening and a lower side opening, the upper side opening opens on a top surface that is a surface on a side from which the adhesive is filled, and the lower side opening opens on a lower surface that is a surface on a side opposite to the top surface.

公开(公告)号：US20210208343A1

公开(公告)日：2021-07-08

申请号：US16068875

申请日：2017-03-15

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Hirotaka Asada

IPC: G02B6/38

Abstract: An optical-fiber-attached ferrule includes: an optical fiber hole into which an optical fiber is inserted and fixed with a first adhesive; and an adhesive-filling section including an opening surface and an opposed surface opposite the opening surface. The adhesive-filling section is filled with a second adhesive that is softer than the first adhesive with an end surface of the optical fiber positioned closer to the opposed surface than to the opening surface.

公开(公告)号：US10705299B2

公开(公告)日：2020-07-07

申请号：US16348821

申请日：2017-11-29

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Hirotaka Asada

IPC: G02B6/38 ,  G02B6/32

Abstract: A ferrule structure includes: a ferrule body including a guide hole that accepts insertion of a guide pin, and a fiber hole that accepts insertion of an optical fiber and that is disposed in an opening surface of the ferrule body; and a lens plate including a guide hole that accepts insertion of the guide pin, a lens part, and an abutment surface that abuts an endface of the optical fiber. A recess is disposed in at least one of the ferrule body and the lens plate. A matching material filling gap, that is to be filled with a refractive index matching material, is formed with the recess, between the opening surface of the ferrule body and the abutment surface of the lens plate.

公开(公告)号：US20180120512A1

公开(公告)日：2018-05-03

申请号：US15569660

申请日：2016-12-05

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi

IPC: G02B6/38 ,  G02B6/42

CPC classification number: G02B6/382 ,  G02B6/36 ,  G02B6/3821 ,  G02B6/3853 ,  G02B6/3861 ,  G02B6/3867 ,  G02B6/3869 ,  G02B6/3885 ,  G02B6/4212 ,  G02B6/4214

Abstract: An optical-fiber-attached ferrule includes: an optical fiber hole into which an optical fiber is inserted; and a filling section filled with a liquid refractive index-matching material. The filling section internally includes an opening surface of the optical fiber hole and an opposed surface that is opposed to the opening surface, and the filling section is filled with the liquid refractive index-matching material while an end surface of the optical fiber inserted into the optical fiber hole abuts with the opposed surface

公开(公告)号：US09927583B2

公开(公告)日：2018-03-27

申请号：US14668575

申请日：2015-03-25

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Shigeo Takahashi ,  Kazuhiro Takizawa

IPC: G02B6/38 ,  G02B6/255

CPC classification number: G02B6/3846 ,  G02B6/2558 ,  G02B6/3847 ,  G02B6/3853 ,  G02B6/387 ,  G02B6/3885 ,  G02B6/3887

Abstract: An optical connector comprises a housing, a regulating portion which is protrudes toward an inner surface of the housing, a ferrule which is secured to an optical fiber and which is accommodated inside the housing so as to be movable. The ferrule includes a base portion and a thinned portion that has a thickness smaller than that of the base portion. If the ferrule moves forward in the butt-connection direction, the regulating portion and the base portion approach each other, so that the regulating portion regulates the movement of the ferrule in the thickness direction. If the ferrule moves backward in the butt-connection direction, the ferrule reaches a position where the thinned portion faces the regulating portion, so that the movement of the ferrule in the thickness direction is not regulated by the regulating portion.

公开(公告)号：US20180045894A1

公开(公告)日：2018-02-15

申请号：US15556071

申请日：2015-11-30

Applicant: FUJIKURA LTD.

Inventor： Shigeo Takahashi ,  Seiji Kato

IPC: G02B6/38

CPC classification number: G02B6/387 ,  G02B6/3801 ,  G02B6/3849 ,  G02B6/3877 ,  G02B6/3887 ,  G02B6/3891 ,  G02B6/3897 ,  G02B6/4433

Abstract: A plug-side optical connector includes: an insertion section that is inserted inside a cylindrical coupling section of a receptacle-side optical connector; a rotation section that is coupled to the coupling section of the receptacle-side optical connector; and a waterproofing member disposed on an outer peripheral surface of the insertion section inside the rotation section to contact an inner peripheral surface of the coupling section of the receptacle-side optical connector when the insertion section is inserted inside the coupling section of the receptacle-side optical connector. The rotation section is rotatable outside the insertion section