OPTICAL MEMBER PRODUCTION METHOD
    1.
    发明申请

    公开(公告)号:US20250020856A1

    公开(公告)日:2025-01-16

    申请号:US18714691

    申请日:2023-02-22

    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.

    OPTICAL MEMBER, METHOD FOR PRODUCING SAME, AND OPTICAL ELEMENT

    公开(公告)号:US20250138236A1

    公开(公告)日:2025-05-01

    申请号:US18729307

    申请日:2023-01-13

    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.

    METHOD FOR PRODUCING COATED OPTICAL FIBER AND COATED OPTICAL FIBER PRODUCTION APPARATUS

    公开(公告)号:US20230114823A1

    公开(公告)日:2023-04-13

    申请号:US17911325

    申请日:2021-03-16

    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.

    METHOD FOR PRODUCING COATED OPTICAL FIBER AND COATED OPTICAL FIBER PRODUCTION APPARATUS

    公开(公告)号:US20230137341A1

    公开(公告)日:2023-05-04

    申请号:US17911332

    申请日:2021-03-16

    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.

    PLASTIC OPTICAL FIBER
    6.
    发明申请

    公开(公告)号:US20220373755A1

    公开(公告)日:2022-11-24

    申请号:US17764419

    申请日:2020-09-30

    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.

Patent Agency Ranking