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公开(公告)号：US20190353850A1
公开(公告)日：2019-11-21
申请号：US16484249
申请日：2018-02-28
Applicant: FUJIKURA LTD.
Inventor： Hirotaka Asada , Akihiro Nakama , Shigeo Takahashi
Abstract: An optical loopback member attaches to a counterpart optical connector to face a plurality of optical fibers of the counterpart optical connector that includes a first input optical fiber, second input optical fiber, first output optical fiber, and second output optical fiber. The optical loopback member includes a first reflector including: a first output light reflection surface that reflects a first output light, outputted in a first direction, from the first output optical fiber; and a first input light reflection surface that reflects light reflected by the first output light reflection surface and directs the reflected light to the first input optical fiber arranged in a second direction with respect to the first output optical fiber. The second direction is perpendicular to the first direction.
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公开(公告)号：US11448834B2
公开(公告)日：2022-09-20
申请号：US16763716
申请日：2018-08-06
Applicant: FUJIKURA LTD.
Inventor： Akihiro Nakama , Hirotaka Asada
Abstract: A ferrule structure includes: a ferrule body including a body-side guide hole for insertion of a guide pin, and a holding hole that holds light guide members forming light guides; a lens plate including a plate-side guide hole for insertion of the guide pin, and a lens array that includes lenses aligned to the light guides; and a recessed part in an end part of at least one of the body-side guide hole and the plate-side guide hole on an adhesion surface side.
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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
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.
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4.发明授权公开(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
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.
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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
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.
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Patent Agency Ranking
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.
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公开(公告)号：US11467352B2
公开(公告)日：2022-10-11
申请号：US17294916
申请日：2019-09-17
Applicant: FUJIKURA LTD.
Inventor： Akihiro Nakama , Hirotaka Asada
Abstract: A ferrule includes: a main body configured to hold an end of a first optical fiber and an end of a second optical fiber parallel to the first optical fiber; and a lens plate including a first abutment surface configured to abut against an end face of the first optical fiber, a second abutment surface configured to abut against an end face of the second optical fiber, a first lens configured to face the end face of the first optical fiber, and a second lens configured to face the end face of the second optical fiber. The first abutment surface is inclined with respect to a plane perpendicular to a first optical axis of the first optical fiber. The second abutment surface is inclined with respect to a plane perpendicular to a second optical axis of the second optical fiber.
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公开(公告)号：US20220019033A1
公开(公告)日：2022-01-20
申请号：US17299610
申请日：2019-09-17
Applicant: FUJIKURA LTD.
Inventor： Akihiro Nakama , Hirotaka Asada
IPC: G02B6/38
Abstract: A ferrule includes: a ferrule body including a first body-side guide hole into which a first guide pin is inserted, a second body-side guide hole into which a second guide pin is inserted, and an optical fiber holder that holds an optical fiber; and a lens plate including a first plate-side guide hole into which the first guide pin is inserted, a second plate-side guide hole into which the second guide pin is inserted, a lens part, and an abutment surface that an end face of the optical fiber abuts. The first guide pin fits the first body-side guide hole and the first plate-side guide hole. The second guide pin fits one of the second body-side guide hole or the second plate-side guide hole.
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9.发明申请公开(公告)号：US20200088954A1
公开(公告)日：2020-03-19
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
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.
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公开(公告)号：US10101541B2
公开(公告)日：2018-10-16
申请号：US14669709
申请日：2015-03-26
Applicant: FUJIKURA, LTD.
Inventor： Akihiro Nakama , Tatsuya Ohta , Kunihiko Fujiwara , Takanobu Mikami
Abstract: An optical ferrule and an optical connector are provided, which make it possible to reduce the labor required for an adhesive wiping operation even when the optical ferrule is small-sized. A first adhesive filling recess 113 is equipped, which is formed at an outlet of an optical fiber hole 112 so that a forward end of a bare fiber 120, which is positioned by the optical fiber hole 112, is allowed to abut against an inner wall 113w opposed to the outlet, and the bare fiber 120 is adhered and fixed in a resultant state by means of an adhesive 131 with which the recess is filled, wherein the first adhesive filling recess 113 is provided with adhesive accommodating recesses 115, 117 which are shallower than the first adhesive filling recess 113 and are disposed continuously with the first adhesive filling recess 113.
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