公开(公告)号：US20230408774A1

公开(公告)日：2023-12-21

申请号：US18036593

申请日：2021-08-25

Applicant: Fujikura Ltd.

Inventor： Hirotaka Asada

IPC: G02B6/38 ,  G02B6/40

CPC classification number: G02B6/3861 ,  G02B6/403

Abstract: A ferrule includes a main body including inner and outer walls and a connection end surface at which a tip of an optical fiber is to be disposed. The inner wall has fiber holes. The ferrule includes an adhesive filling part disposed in the main body on an opposite side from the connection end surface with respect to the inner wall, an upper opening that opens from the outer wall to the adhesive filling part, and a lower opening that opens from the outer wall to the adhesive filling part and is disposed on an opposite side from the upper opening. The inner wall has a first surface and a second surface protruding toward the adhesive filling part from the first surface. The upper opening is opened in a location along the first surface. The lower opening is opened in a location along the second surface.

公开(公告)号：US20220075124A1

公开(公告)日：2022-03-10

申请号：US17415463

申请日：2019-10-03

Applicant: FUJIKURA LTD.

Inventor： Hirotaka Asada ,  Akihiro Nakama ,  Akito Nishimura ,  Takahiko Sabano

IPC: G02B6/38 ,  G02B6/32 ,  G02B6/40

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.

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：US10962725B2

公开(公告)日：2021-03-30

申请号：US16763826

申请日：2018-08-06

Applicant: Fujikura Ltd.

Inventor： Akihiro Nakama ,  Hirotaka Asada

IPC: G02B6/38

Abstract: A ferrule structure includes: a holding aperture that holds light guide members forming light guides; a recess that is recessed from a connection end surface with respect to a mating ferrule; a first lens array on a base surface that is a bottom surface of the recess; and a first groove that is recessed from the base surface and is on an outer side of the first lens array. The first lens array includes lenses that are aligned with the light guides.

公开(公告)号：US20200371298A1

公开(公告)日：2020-11-26

申请号：US16763716

申请日：2018-08-06

Applicant: FUJIKURA LTD.

Inventor： Akihiro Nakama ,  Hirotaka Asada

IPC: G02B6/38 ,  G02B6/32 ,  G02B6/40

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.

公开(公告)号：US20200341207A1

公开(公告)日：2020-10-29

申请号：US16763826

申请日：2018-08-06

Applicant: Fujikura Ltd.

Inventor： Akihiro Nakama ,  Hirotaka Asada

IPC: G02B6/38

Abstract: A ferrule structure includes: a holding aperture that holds light guide members forming light guides; a recess that is recessed from a connection end surface with respect to a mating ferrule; a first lens array on a base surface that is a bottom surface of the recess; and a first groove that is recessed from the base surface and is on an outer side of the first lens array. The first lens array includes lenses that are aligned with the light guides.

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.