公开(公告)号：US20250020856A1

公开(公告)日：2025-01-16

申请号：US18714691

申请日：2023-02-22

Applicant: NITTO DENKO CORPORATION

Inventor： Kenjiro SAOMOTO ,  Naoyuki MATSUO ,  Shunya WAKAYAMA

IPC: F21V8/00

Abstract: Provided is an optical member production method including: a step A of preparing a porous layer supported on a substrate; a step B of applying laser light to the porous layer to remove a partial region of the porous layer, the partial region to be removed including a plurality of discrete island-like regions; and a step C of arranging a first adhesive layer on the porous layer after the step B.

公开(公告)号：US20250138236A1

公开(公告)日：2025-05-01

申请号：US18729307

申请日：2023-01-13

Applicant: NITTO DENKO CORPORATION

Inventor： Kenjiro SAOMOTO ,  Naoyuki MATSUO

IPC: F21V8/00 ,  G02B1/04

Abstract: This optical member has a first layer with a porous structure, the first layer includes a first area with the porous structure and a second area in which the pores of the porous structure are filled with a resin composition, the second area includes a plurality of discretely arranged island-like areas, and when the area ratio of the first layer occupied by the second area is denoted by P % and the haze value of the first layer is denoted by H %, H/P is less than 0.20.

公开(公告)号：US20230114823A1

公开(公告)日：2023-04-13

申请号：US17911325

申请日：2021-03-16

Applicant: NITTO DENKO CORPORATION

Inventor： Kenjiro SAOMOTO ,  Tatsuya ARAKI ,  Yuki FUJIWARA ,  Hajime MICHIHIRA

IPC: C03C25/16 ,  C03C25/106

Abstract: A method for producing a coated optical fiber includes coating, using a coating die, a circumferential side surface of an optical fiber with a coating material by passing the optical fiber sequentially through an insertion hole portion, a_ liquid retaining chamber (21), and a_coating hole portion opposed to the insertion hole portion, while the coating material in the liquid retaining chamber is supplied under pressure to the coating hole portion, in which a pressure difference ΔP (MPa) between a liquid pressure of the coating material in the liquid retaining chamber and a pressure outside the coating die, a viscosity µ (Pa·s) of the coating material in the liquid retaining chamber, and a length L (mm) of the coating hole portion in an extending direction satisfy a relationship of ΔP/µL ≤ 0.15.

公开(公告)号：US20180086891A1

公开(公告)日：2018-03-29

申请号：US15562667

申请日：2016-03-30

Applicant: NITTO DENKO CORPORATION

Inventor： Kenjiro SAOMOTO ,  Naoyuki MATSUO

IPC: C08J9/36 ,  C08G77/04 ,  B32B27/28 ,  B32B27/32

CPC classification number: C08J9/365 ,  B32B27/00 ,  B32B27/281 ,  B32B27/285 ,  B32B27/322 ,  B32B27/325 ,  C08G77/04 ,  C08G77/06 ,  C08J9/28 ,  C08J9/42 ,  C08J2201/00 ,  C08J2205/02 ,  C08J2205/04 ,  C08J2205/05 ,  C08J2383/04 ,  C08J2483/04

Abstract: According to the present invention, there are provided a porous body comprising a porous silicone substrate having communicating pores and a three-dimensional network silicone skeleton which forms the pores and which is formed by a copolymerization of a bifunctional alkoxysilane and a trifunctional alkoxysilane, and a polymeric cover material covering at least a part of a surface of the silicone skeleton, and an a method for producing the porous body. The porous body of the present invention has high flexibility and is strong to tension.

公开(公告)号：US20230137341A1

公开(公告)日：2023-05-04

申请号：US17911332

申请日：2021-03-16

Applicant: NITTO DENKO CORPORATION

Inventor： Kenjiro SAOMOTO ,  Tatsuya ARAKI ,  Yuki FUJIWARA

IPC: B29D11/00

Abstract: A method for producing a coated optical fiber uses a coating die including a liquid retaining chamber; an insertion hole portion that communicates with the liquid retaining chamber; and a coating hole portion that communicates with the liquid retaining chamber and that is opposed to the insertion hole portion via the liquid retaining chamber. The production method includes, in the coating die, coating a circumferential side surface of an optical fiber with a coating material by passing the optical fiber through the insertion hole portion, the liquid retaining chamber, and the coating hole portion while the coating material in the liquid retaining chamber is supplied to the coating hole portion, in which a viscosity μ (Pa·s) of the coating material in the liquid retaining chamber, and a length L (mm) of the coating hole portion in an extending direction satisfy a relationship of μL≥1.5.

公开(公告)号：US20220373755A1

公开(公告)日：2022-11-24

申请号：US17764419

申请日：2020-09-30

Applicant: NITTO DENKO CORPORATION

Inventor： Yasuaki OKADA ,  Takeshi SAITO ,  Kenjiro SAOMOTO

IPC: G02B6/44 ,  G02B6/02

Abstract: A plastic optical fiber includes a plastic optical fiber body and a coloring member covering a peripheral surface of the plastic optical fiber body. The coloring member is made from a cured product of a curable composition containing an active-energy-ray-curable multifunctional acrylate and a coloring agent. The reaction percentage yield of the vinyl group of the active-energy-ray-curable multifunctional acrylate in the coloring member is 85% or more.