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    OPTICAL STACK
    2.
    发明申请
    OPTICAL STACK 有权

    公开(公告)号：US20240377568A1

    公开(公告)日：2024-11-14

    申请号：US18783587

    申请日：2024-07-25

    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 and an optical adhesive 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 STACK
    4.
    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 Construction
    7.
    发明公开
    Optical Construction 审中-公开

    公开(公告)号：US20230280512A1

    公开(公告)日：2023-09-07

    申请号：US18171748

    申请日：2023-02-21

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Joseph P. Attard ,  Kristy A. Gillette ,  Tri D. Pham ,  Zhaohui Yang

    IPC: G02B5/20 ,  G02B3/00

    CPC classification number: G02B5/201 ,  G02B3/0075

    Abstract: An optical construction includes a lens layer having a structured first major surface including a plurality of microlenses; an optical filter disposed on the lens layer; an optically opaque mask layer disposed between the lens layer and the optical filter and defining a plurality of openings therein; and a low index layer disposed on the optical filter. For a first wavelength in a visible wavelength range, a second wavelength that can be in an infrared wavelength range, the optical filter has: an optical transmission of greater than about 50% for the first wavelength for each of a first incident angle of less than about 10 degrees and a second incident angle of greater than about 30 degrees, and for the second wavelength, an optical transmission of less than about 15% for the first incident angle and of greater than about 30% for the second incident angle.

    Optical stack
    9.
    发明授权
    Optical stack 有权

    公开(公告)号：US12117635B2

    公开(公告)日：2024-10-15

    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: G02B27/01 ,  G02B5/30

    CPC classification number: G02B5/305 ,  G02B27/0101 ,  G02B2027/012

    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 stacks for detection systems
    10.
    发明授权
    Optical stacks for detection systems 有权

    公开(公告)号：US12105302B2

    公开(公告)日：2024-10-01

    申请号：US18568323

    申请日：2022-06-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kristy A. Gillette ,  Zhaohui Yang ,  Joseph P. Attard ,  Martin E. Denker

    IPC: G02B5/08 ,  G02B3/00 ,  G02B5/02 ,  G06V40/13

    CPC classification number: G02B3/0037 ,  G02B5/02 ,  G06V40/1318

    Abstract: An integral optical stack includes a lens film having first and second major surfaces. The first major surface includes microlenses having an average peak-to-valley height PV1. A light absorbing layer is disposed on the lens film and defines a plurality of openings. A substantially planarizing optically diffusive layer is disposed on the first major surface of the lens film, conforming to the microlenses. The optically diffusive layer includes a plurality of nanoparticles. A polymeric material bonds the nanoparticles to each other to form a plurality of nanoparticle aggregates defining a plurality of voids therebetween. The optically diffusive layer has an average thickness greater than about 8 microns, and an index of refraction of less than about 1.25. Any non-planarity of a major surface of the optically diffusive layer due to the microlenses of the first major surface has an average peak-to-valley height PV2, PV2≤0.7 PV1.

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