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    Curved display with light control film
    41.
    发明授权
    Curved display with light control film 有权

    公开(公告)号：US12298539B2

    公开(公告)日：2025-05-13

    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.

    OPTICAL LAYERS, FILMS AND SYSTEMS
    43.
    发明申请
    OPTICAL LAYERS, FILMS AND SYSTEMS 有权

    公开(公告)号：US20220308281A1

    公开(公告)日：2022-09-29

    申请号：US17639025

    申请日：2020-10-02

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Gary T. Boyd ,  David A. Rosen ,  Bharat R. Acharya ,  Kevin W. Gotrik ,  David J. Rowe ,  Caleb T. Nelson

    IPC: F21V8/00 ,  G02B5/02 ,  G02F1/1333 ,  G02F1/1335

    Abstract: An optical system includes an extended illumination source configured to emit light from an extended emission surface thereof and a light redirecting layer disposed on the extended emission surface. The light redirecting layer has a structured major surface that includes a regular array of light redirecting structures, each light redirecting structure including a plurality of facets; and a plurality of discrete spaced apart window segments. The optical system includes a plurality of reflective segments where each reflective segment is disposed on a corresponding window segment. For substantially normally incident light, each reflective segment has a total: average optical reflectance of at least 30% in a visible wavelength range extending from about 420 nm to about 650 nm; and optical transmittance of at least 10% for at least one infrared wavelength in an infrared wavelength range extending from about 800 nm to about 1200 nm.

    Lightguide having opening and surrounding channel
    44.
    发明授权
    Lightguide having opening and surrounding channel 有权

    公开(公告)号：US11314008B2

    公开(公告)日：2022-04-26

    申请号：US16629595

    申请日：2018-07-30

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

    IPC: F21V8/00

    Abstract: An optical system includes a lightguide having opposing top and bottom major surfaces. A round through opening extends between the two surfaces of the lightguide. An elongated channel is formed in one of the surfaces and at least partially surrounds and is substantially concentric with the opening. The channel has a depth (d) that varies along its length. Light extractors extract light that would otherwise propagate within and along the lightguide. The features of the lightguide can be varied to optimize performance of the lightguide for various purposes.

    Collimating light guide
    45.
    发明授权
    Collimating light guide 有权

    公开(公告)号：US10732344B2

    公开(公告)日：2020-08-04

    申请号：US15755172

    申请日：2016-08-24

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kenneth A. Epstein ,  John A. Wheatley ,  Tao Liu

    IPC: G02B6/00 ,  F21V8/00

    Abstract: A light guide includes a light input surface, a first major surface orthogonal to the light input surface, a second major surface opposing the first major, a plurality of discrete light extraction features disposed on the second major surface and a plurality of closely packed prisms disposed along the second major surface. The plurality of discrete light extraction features separate the plurality of closely packed prisms from the second major surface. Each of the closely packed prisms include a first prism surface forming a first angle with the second surface in a range from 80 to 100 degrees or in a range from 85 to 95 degrees or in a range from 87 to 93 degrees.

    Lightguide Having Recess of Varying Depth
    46.
    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.

    LIGHT SOURCE AND DISPLAY SYSTEM INCORPORATING SAME
    49.
    发明申请
    LIGHT SOURCE AND DISPLAY SYSTEM INCORPORATING SAME 审中-公开
    光源和显示系统

    公开(公告)号：US20150103507A1

    公开(公告)日：2015-04-16

    申请号：US14579951

    申请日：2014-12-22

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John A. Wheatley ,  Tao Liu ,  Encai Hao ,  William Blake Kolb ,  Michael Benton Free

    IPC: F21V13/14 ,  G02F1/1335 ,  F21V9/14

    CPC classification number: F21V13/14 ,  F21V9/14 ,  G02B6/005 ,  G02B6/0051 ,  G02B6/0096 ,  G02F1/133602

    Abstract: Light sources are disclosed. A disclosed light source includes an optically reflective cavity that includes an input port for receiving light and an output port for transmitting light, a lamp that is disposed at the input port, and an optical stack that is disposed at the output port. The optical stack includes a forward scattering optical diffuser that is disposed at the output port and has an optical haze that is not less than about 20%, and an optical film that is disposed on the optical diffuser. The optical film enhance total internal reflection at the interface between the optical film and the optical diffuser. The optical film has an index of refraction that is not greater than about 1.3 and an optical haze that is not greater than about 5%. The optical stack also includes a reflective polarizer layer that is disposed on the optical film. Substantial portions of each two neighboring major surfaces in the optical stack are in physical contact with each other.

    Abstract translation: 公开了光源。 所公开的光源包括光反射腔，其包括用于接收光的输入端口和用于传输光的输出端口，设置在输入端口处的灯以及设置在输出端口处的光学堆叠。 光学堆叠包括设置在输出端口并具有不小于约20％的光学雾度的前向散射光学漫射器，以及设置在光学漫射器上的光学膜。 光学膜增强了在光学膜和光学扩散器之间的界面处的全内反射。 光学膜的折射率不大于约1.3，光学雾度不大于约5％。 光学堆叠还包括设置在光学膜上的反射偏振器层。 光学堆叠中每两个相邻的主要表面的实质部分彼此物理接触。

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