公开(公告)号：US20180339941A1

公开(公告)日：2018-11-29

申请号：US16056994

申请日：2018-08-07

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Kenichi SUYAMA ,  Yoshihiro ARASHITANI ,  Zyunpei WATANABE

IPC: C03C25/105 ,  C03C25/106 ,  C03C25/18

Abstract: A method of manufacturing an optical fiber wire includes applying ultraviolet curable resin onto the outer periphery of a traveling optical fiber, cooling the ultraviolet curable resin applied to the optical fiber using first cooled inert gas, and curing the ultraviolet curable resin by radiating ultraviolet rays on the ultraviolet curable resin that is cooled by the first cooled inert gas through an ultraviolet transparent tube.

公开(公告)号：US20180282209A1

公开(公告)日：2018-10-04

申请号：US16001985

申请日：2018-06-07

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Zyunpei WATANABE ,  Hiroki TANAKA ,  Kenichi SUYAMA ,  Yoshihiro ARASHITANI

IPC: C03C25/26 ,  C03C25/12

Abstract: A bare optical fiber manufacturing method includes applying an ultraviolet curable resin applied around an optical fiber; and irradiating the ultraviolet curable resin with ultraviolet light emitted from semiconductor ultraviolet light emitting elements, by use of an ultraviolet irradiation device having plural ultraviolet irradiation units each having plural positions where the ultraviolet light is emitted toward the ultraviolet curable resin, the plural positions being arranged on the same circle, the plural ultraviolet irradiation units being arranged in a traveling direction of the optical fiber such that the optical fiber passes centers of the circles, at least two of the plural ultraviolet irradiation units being differently arranged with respect to circumferential direction angles thereof around an axis that is the traveling direction of the optical fiber.

公开(公告)号：US20210270448A1

公开(公告)日：2021-09-02

申请号：US17324645

申请日：2021-05-19

Applicant: FURUKAWA ELECTRIC CO., LTD.

Inventor： Zyunpei WATANABE ,  Hiroki TANAKA ,  Kenichi SUYAMA ,  Yoshihiro ARASHITANI

IPC: F21V15/01 ,  C03C25/12 ,  C23C16/54 ,  H05B45/10 ,  B29C33/06 ,  H05B1/02 ,  B29C35/08 ,  B05C9/14 ,  B29C35/10

Abstract: A bare optical fiber manufacturing method includes applying an ultraviolet curable resin applied around an optical fiber; and irradiating the ultraviolet curable resin with ultraviolet light emitted from semiconductor ultraviolet light emitting elements, by use of an ultraviolet irradiation device having plural ultraviolet irradiation units each having plural positions where the ultraviolet light is emitted toward the ultraviolet curable resin, the plural positions being arranged on the same circle, the plural ultraviolet irradiation units being arranged in a traveling direction of the optical fiber such that the optical fiber passes centers of the circles, at least two of the plural ultraviolet irradiation units being differently arranged with respect to circumferential direction angles thereof around an axis that is the traveling direction of the optical fiber.