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    Lightguide Having Recess of Varying Depth
    21.
    发明申请
    Lightguide Having Recess of Varying Depth 审中-公开

    公开(公告)号：US20200233135A1

    公开(公告)日：2020-07-23

    申请号：US16632471

    申请日：2018-08-01

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

    IPC: F21V8/00

    Abstract: An optical system comprises a lightguide having an elongated recess formed therein. The recess divides the lightguide into a first lightguide section a second larger lightguide section. Light extractors are disposed in the second, but not the first, lightguide section for extracting light that would otherwise propagate within and along the second lightguide section via total internal reflection (TIR). The depth of the recess varies along its length. The inclusion of a recess having a depth that varies along its length provides design flexibility in the number and location of light source(s) used by the optical system.

    Multilayer composite article
    24.
    发明授权
    Multilayer composite article 有权

    公开(公告)号：US10213993B2

    公开(公告)日：2019-02-26

    申请号：US15105913

    申请日：2014-12-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kui Chen-Ho ,  Caroline M. Ylitalo ,  Yu Yang ,  Yongshang Lu ,  Alan L. Levin ,  Hyacinth L. Lechuga ,  Steven H. Kong ,  Suresh S. Iyer ,  Ingrid N. Haugan ,  Mahfuza B. Ali

    IPC: C08K3/22 ,  C09D127/12 ,  C09D143/04 ,  B32B27/08 ,  B32B7/02 ,  B32B27/28 ,  B32B27/30 ,  B32B37/14 ,  C09D133/10 ,  B32B27/36 ,  B32B1/00 ,  C09D7/61

    Abstract: Described herein is composite article comprising a substrate; and on at least one face of the substrate a multilayered coating disposed thereon. The multilayered coating comprises (i) an abrasion-resistant layer adjacent to the substrate, wherein the abrasion-resistant layer comprises inorganic oxide nanoparticles and a polymer binder; and (ii) an antireflection layer adjacent to the abrasion-resistant layer opposite the substrate, wherein the antireflection layer comprises a fluorosilane polymer, wherein the fluorosilane polymer comprises: at least one monomeric unit A represented by the formula (I) wherein R1 represents H or methyl, L1 represents a covalent bond or a divalent aliphatic group having from 1 to 10 carbon atoms, each Y1 independently represents a hydrocarbyl group having from 1 to 6 carbon atoms, each Y2 independently represents a hydrolyzable group, g is 0, 1, or 2; and at least one divalent monomeric unit B represented by the formula (I) wherein R2, R3, and R4 represent H, methyl, trifluoromethyl, or F, wherein at least one of R2, R3, and R4 is F, Rf1 represents a covalent bond or a divalent group selected from the group consisting of —(CF2O)a—, —(CF2CF2O)b—, —(CF2CF2CF2O)c—, —(CF2CF2CF2CF2O)d—, —(CF2CF(CF3)O)e—, and combinations thereof, wherein a, b, c, d, and e represent integers in the range of from 0 to 130, and wherein 1≤a+b+c+d+e≤130, and Rf2 is a perfluoroalkyl group.

    Unitary lightguide
    30.
    发明授权
    Unitary lightguide 有权

    公开(公告)号：US11287559B2

    公开(公告)日：2022-03-29

    申请号：US17159371

    申请日：2021-01-27

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Yongshang Lu ,  David C. Mercord ,  Brian W. Ostlie

    IPC: F21V8/00

    Abstract: A unitary lightguide including a first lightguide section extending along a first direction and a second lightguide section extending along a second direction is described. The second lightguide section includes a plurality of light extractors for extracting light that would otherwise propagate within and along the second lightguide section. The unitary lightguide includes a boundary region disposed between and joining the first and second lightguide sections and including a plurality of spaced apart light redirecting features. Each light redirecting feature includes a first portion extending substantially parallel to the first direction, and a second portion extending from proximate the first end of the first portion toward the second lightguide section and making an angle with the first portion in a range from about 10 degrees to about 70 degrees.

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