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    OPTICAL STACK
    21.
    发明申请
    OPTICAL STACK 有权

    公开(公告)号：US20220187521A1

    公开(公告)日：2022-06-16

    申请号：US17438245

    申请日：2020-04-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Michelle L. Toy ,  Kristy A. Gillette ,  Matthew B. Johnson ,  Eileen M. Franey ,  Carley A. Haroldson ,  Joseph P. Attard ,  Guy M. Kallman ,  William Blake Kolb

    IPC: G02B5/30 ,  G02B27/01

    Abstract: An optical stack includes an optical film (200) and an optical adhesive (500) disposed on the optical film. The optical adhesive has a major structured surface facing away from the optical film that includes a plurality of channels formed therein. The channels define a plurality of substantially flat land regions therebetween. The land regions include at least about 50% of a total surface area of the major structured surface. When the optical stack is placed on a support surface with the major structured surface of the optical adhesive contacting the support surface, the optical stack bonds to the support surface and may be removed from, or slidingly repositioned on, the support surface without damage to the optical adhesive or the support surface, and upon application of at least one of heat and pressure, the optical stack substantially permanently bonds to the support surface and the plurality of channels substantially disappear.

    Optical constructions for display systems
    25.
    发明授权
    Optical constructions for display systems 有权

    公开(公告)号：US12094238B2

    公开(公告)日：2024-09-17

    申请号：US18195475

    申请日：2023-05-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kristy A. Gillette ,  Zhaohui Yang ,  Encai Hao ,  William J. Gray

    IPC: G06K9/00 ,  G02B3/00 ,  G02B5/00 ,  G02B5/20 ,  G06V40/13

    CPC classification number: G06V40/1324 ,  G02B3/0056 ,  G02B5/003 ,  G02B5/208

    Abstract: An integral optical construction includes a lens layer including a structured first major surface having a plurality of microlenses. An optically opaque mask layer is disposed on the lens layer and defines a plurality of openings. Each of the openings extends from a first major surface of the mask layer facing the lens layer to an opposite second major surface of the mask layer. The openings are in a one-to-one correspondence with the microlenses. Regions of the mask layer between the openings have an optical density of greater than about 2 for at least a first visible wavelength in a visible wavelength range. An optical adhesive layer is disposed on, and makes physical contact with, the second major surface of the mask layer. The optical adhesive layer defines a recess at each of the openings. The recess includes a closed bottom and an opposite open top open to the opening.

    TEXTURED COATING FOR OPTICAL PRODUCTS
    28.
    发明申请
    TEXTURED COATING FOR OPTICAL PRODUCTS 有权

    公开(公告)号：US20210302628A1

    公开(公告)日：2021-09-30

    申请号：US17332477

    申请日：2021-05-27

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Thomas J. Ludemann ,  Jeffrey W. Hagen ,  David T. Ask ,  Kristy A. Gillette ,  Eric D. Shockey

    IPC: G02B5/02 ,  B05D1/28 ,  B05D1/30 ,  G02B1/10 ,  G02B27/00

    Abstract: A coating composition includes a first polymer and a second polymer that are incompatible and non-reactive with one another. The absolute value of the difference between the refractive index of the first polymer and the refractive index of the second polymer is about 0 to about 0.01. The first polymer and the second polymer are soluble in a carrier liquid that is a good solvent for the first polymer and a poor solvent for the second polymer. The carrier liquid is removed from the coating layer to spinodally decompose the mixture of the first polymer and the second polymer in an amount sufficient to form a substantially continuous first phase with a predominant amount of the first polymer and a substantially discontinuous second phase with a predominant amount the second polymer. At least 70% of the second phase includes droplets with an aspect ratio, when viewed in the plane of the surface of the substrate, of less than about 3.

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