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    Curved Display With Light Control Film
    51.
    发明申请
    Curved Display With Light Control Film 有权

    公开(公告)号：US20220163704A1

    公开(公告)日：2022-05-26

    申请号：US17596633

    申请日：2020-06-11

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Gary T. Boyd ,  Tri D. Pham ,  Garth V. Antila ,  Keith R. Jacobs

    IPC: G02B5/00

    Abstract: A curved display includes a display panel having a curved major surface and a light control film disposed proximate the display panel. The curved major surface is curved about a first axis, and a central portion of the curved major surface has a surface normal along a second axis substantially orthogonal to the first axis. The light control film includes a major surface having a substantially same shape as the curved major surface and includes a plurality of alternating optically transmissive and optically absorptive regions. In a cross-section orthogonal to the first axis, a transmissive region and adjacent absorptive regions define a central ray transmission direction through the optically transmissive region such that a light ray emitted by the display panel and transmitted through the optically transmissive region along the transmission direction is refracted upon exiting the curved display into a direction substantially parallel to the second axis.

    Unitary lightguide
    52.
    发明授权
    Unitary lightguide 有权

    公开(公告)号：US10935713B2

    公开(公告)日：2021-03-02

    申请号：US16624626

    申请日：2018-06-25

    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.

    Illumination system including lightguide
    54.
    发明授权
    Illumination system including lightguide 有权

    公开(公告)号：US10677977B2

    公开(公告)日：2020-06-09

    申请号：US15523949

    申请日：2015-11-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Mark E. Napierala

    IPC: F21V8/00 ,  F21S43/237 ,  F21S43/245 ,  F21S43/247 ,  B60Q1/24

    Abstract: Various embodiments of lightguides and illumination systems that include lightguides are disclosed. In one or more embodiments, a lightguide can include first and second light extractors (330,340) that extract light that would otherwise be confined and propagate within the lightguide along the length of the lightguide primarily by total internal reflection. The first and second light extractors can form respective first and second patterns along a length of the lightguide. Light extracted by the first light extractors can exit the lightguide primarily along a first direction (306). Light extracted by the second light extractors can exit the lightguide primarily along a second direction (308) different from the first direction. A brightness of the total light extracted by the first light extractors can be larger than a brightness of the total light extracted by the second light extractors.

    Light guides
    55.
    发明授权
    Light guides 有权

    公开(公告)号：US10514487B2

    公开(公告)日：2019-12-24

    申请号：US15774705

    申请日：2016-12-06

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Brian W. Ostlie ,  Brent A. Hedding ,  David C. Mercord ,  Bradley J. Johanson

    IPC: F21V8/00

    Abstract: Light guide assemblies including first, second and third light guides, a first optical coupling component disposed between and attached to the first and second light guides, and a second optical coupling component disposed between and attached to the second and third light guides are described. The first optical coupling component is adapted to couple light between the first and second light guides, and the second optical coupling component is adapted to couple light the between second and third light guides. The first light guide, the second light guide and the first optical coupling component are coextensive over a first region of the assembly, and the second light guide, the third light guide and the second optical coupling component are coextensive over a different second region of the assembly.

    LIGHTGUIDE
    58.
    发明申请
    LIGHTGUIDE 审中-公开

    公开(公告)号：US20180313993A1

    公开(公告)日：2018-11-01

    申请号：US15569572

    申请日：2016-04-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Brent A. Hedding ,  David C. Mercord ,  Brian W. Ostlie

    IPC: F21V8/00

    CPC classification number: G02B6/001 ,  G02B6/00 ,  G02B6/0035 ,  G02B6/0038

    Abstract: Lightguides that include a plurality of discrete spaced apart light extracting structures are described. Each light extracting structure includes opposing inclined first and second sidewalls extending from a first side of the lightguide toward an optical axis of the light guide and meeting at an elongated peak extending along a first direction substantially perpendicular to the optical axis, and may include opposing first and second endwalls extending between the first and second sidewalls from the first side of the lightguide to the elongated peak to form a notch extending into a core of the lightguide. The first and second sidewalls are adapted to extract light propagating along the lightguide from an opposite second side of the lightguide by reflecting the propagating light toward the second side. The notch may have raised edges along at least a portion of a perimeter of the notch.

    Optical constructions incorporating a light guide and low refractive index films
    60.
    发明授权
    Optical constructions incorporating a light guide and low refractive index films 有权
    结合光导和低折射率膜的光学结构

    公开(公告)号：US09482807B2

    公开(公告)日：2016-11-01

    申请号：US14987407

    申请日：2016-01-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John A. Wheatley ,  Tao Liu ,  Encai Hao

    IPC: F21V8/00

    CPC classification number: G02B6/0056 ,  G02B6/0018 ,  G02B6/0021 ,  G02B6/0035 ,  G02B6/0043 ,  G02B6/005 ,  G02B6/0051 ,  G02B6/0053 ,  G02B6/0068 ,  G02B6/0073 ,  G02B6/0075 ,  G02B6/008 ,  G02B2207/107

    Abstract: Optical constructions use a low index of refraction layer disposed between a low absorption layer and a high absorption layer to increase confinement of light to the low absorption region of the optical constructions. Low index layers can be used in optical constructions that have multi-tiered light confinement. In these constructions, a first tier of reflection is provided when light is reflected at the surface of a low index optical film which is disposed directly or indirectly on a light guide. A second tier of reflection occurs at the surface of a light redirecting film having appropriately oriented refractive structures.

    Abstract translation: 光学结构使用设置在低吸收层和高吸收层之间的低折射率层，以增加光对光学结构的低吸收区域的约束。 低折射率层可用于具有多层光限制的光学结构中。 在这些结构中，当在直接或间接设置在光导上的低折射率光学膜的表面反射光时，提供第一层反射。 在具有适当取向的折射结构的光重定向膜的表面上发生第二层反射。

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