Method for producing optical member, and optical member

    公开(公告)号:US10981352B2

    公开(公告)日:2021-04-20

    申请号:US16094523

    申请日:2017-03-06

    Abstract: The method for producing an optical member of the present invention includes: Process (1) of applying a first resin to a substrate; Process (2) of applying a second resin to at least one of the first resin and a die; Process (3) of pushing the substrate to the die with the first resin and the second resin in between to form a resin layer including on a surface thereof an uneven structure; and Process (4) of curing the resin layer to provide a polymer layer. The die includes a surface after release treatment with a fluorine release agent. The first resin contains a resin component, and the resin component contains predetermined amounts of a (meth)acrylamide compound and a urethane prepolymer containing six or more functional groups. The second resin contains predetermined amounts of a reactive group-containing monomer, a fluorosurfactant, and a fluorine-containing monomer.

    Synthetic polymer film and production method of synthetic polymer film

    公开(公告)号:US11364673B2

    公开(公告)日:2022-06-21

    申请号:US16280543

    申请日:2019-02-20

    Abstract: A synthetic polymer film whose surface has a plurality of raised or recessed portions, wherein a two-dimensional size of the plurality of raised or recessed portions is in a range of not less than 0.5 μm and not more than 3 μm when viewed in a normal direction of the synthetic polymer film, the synthetic polymer film has a crosslink structure and contains an organic carboxylic acid, at the lapse of 5 minutes since placing a 200 μL drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is less than 4, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm, and at the lapse of 60 seconds since placing a drop of water on the surface of the synthetic polymer film, a static contact angle of the water drop with respect to the surface is less than 3°.

    Foldable display
    6.
    发明授权

    公开(公告)号:US12279513B2

    公开(公告)日:2025-04-15

    申请号:US17598802

    申请日:2020-03-25

    Abstract: A foldable display, includes a display layer with flexibility including a first display region, a second display region, and a third display region located between the first display region and the second display region; a cover with flexibility configured to cover the display layer; a first support substrate with inflexibility configured to support the first display region; a second support substrate with inflexibility configured to support the second display region; a bending part capable of bending including the third display region; and a shock absorbing layer provided between the display layer and the first support substrate and between the display layer and the second support substrate.

    Cover for endoscope distal end part and endoscope

    公开(公告)号:US12108933B2

    公开(公告)日:2024-10-08

    申请号:US17042876

    申请日:2019-03-20

    CPC classification number: A61B1/00096 G02B1/118 G02B1/18

    Abstract: An endoscope distal end cover (10) is a cover for protecting a distal end (20t) of an endoscope (20) which has an observation window at the distal end, including: a synthetic polymer film (13) which is to be located over the observation window (32) when the endoscope distal end cover is attached to the distal end of the endoscope, wherein the synthetic polymer film has a surface which includes a plurality of raised portions, when viewed in a normal direction of the synthetic polymer film, a two-dimensional size of the plurality of raised portions is in the range of more than 20 nm and less than 500 nm, and a static contact angle of water with respect to the surface is not less than 150°, and a static contact angle of hexadecane with respect to the surface is not less than 60°.

    Antifouling film and polymerizable composition

    公开(公告)号:US10800868B2

    公开(公告)日:2020-10-13

    申请号:US16690185

    申请日:2019-11-21

    Abstract: An antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains, in terms of active components, 75 to 95 wt % of a polymerizable monomer, 2.5 to 12.5 wt % of a urethane acrylate containing fluorine and an ester, and 2.5 to 9 wt % of a perfluoroalkyl-based monomer containing one (meth)acryloyl group for each molecule. The polymerizable monomer contains a bifunctional acrylate that contains an ethylene oxide group and a multifunctional acrylate that contains no ethylene oxide group. The perfluoroalkyl-based monomer has a fluorine atom concentration of 50 to 60 wt %. The polymerizable composition has an ethylene oxide group concentration of 20 to 50 wt %.

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