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    HIGHER TRANSMISSION LIGHT CONTROL FILM
    33.
    发明申请
    HIGHER TRANSMISSION LIGHT CONTROL FILM 有权
    更高传输光控制膜

    公开(公告)号：US20160216420A1

    公开(公告)日：2016-07-28

    申请号：US15092033

    申请日：2016-04-06

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gary E. Gaides ,  Kenneth A. Epstein

    IPC: G02B5/30

    CPC classification number: G02B5/30 ,  G02B5/0263 ,  G02B5/3066 ,  G02B2207/123

    Abstract: A light control film, and light collimating assemblies and liquid crystal displays incorporating such light control films are described. The light control film includes alternating transmissive and absorptive regions, where the refractive index of each transmissive region is greater than the refractive index of each absorptive region. The absorptive regions form interfaces at angles that are close to the perpendicular to the light control film. A portion of the incident light intercepting the absorptive region undergoes Total Internal Reflection, and is transmitted through the film. The axial brightness of light passing through the film is increased, the brightness is more uniform within the viewing angle, and the viewing cutoff angle is sharpened.

    Abstract translation: 描述了一种光控薄膜和光准直组件以及包含这种光控薄膜的液晶显示器。 光控制膜包括交替透射和吸收区域，其中每个透射区域的折射率大于每个吸收区域的折射率。 吸收区域以接近垂直于光控膜的角度形成界面。 截取吸收区域的入射光的一部分经历全内反射，并通过膜传输。 通过膜的光的轴向亮度增加，在视角内的亮度更均匀，并且观察截止角被削尖。

    FACETED MICROSTRUCTURED SURFACE
    34.
    发明申请
    FACETED MICROSTRUCTURED SURFACE 有权

    公开(公告)号：US20250155613A1

    公开(公告)日：2025-05-15

    申请号：US18931483

    申请日：2024-10-30

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kristopher J. Derks ,  Tri D. Pham ,  Kenneth A. Epstein ,  David J. Lamb

    IPC: G02B5/02

    Abstract: An optical film includes a microstructured surface comprising a plurality of prismatic structures, the microstructured surface defining a reference plane and a thickness direction perpendicular to the reference plane; wherein the plurality of prismatic structures includes a plurality of facets, each facet having a facet normal direction forming a polar angle with respect to the thickness direction and an azimuthal angle along the reference plane, and wherein the microstructured surface has a surface azimuthal distribution of the plurality of facets that is substantially uniform, and wherein the microstructured surface has a surface polar distribution of the plurality of facets that has an off-axis peak polar distribution.

    OPTICAL SYSTEM WITH SWITCHABLE DIFFUSER
    40.
    发明申请
    OPTICAL SYSTEM WITH SWITCHABLE DIFFUSER 审中-公开

    公开(公告)号：US20180003364A1

    公开(公告)日：2018-01-04

    申请号：US15545360

    申请日：2017-02-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： John A. Wheatley ,  Guanglei Du ,  Kenneth A. Epstein

    IPC: F21V14/00 ,  G02F1/1334 ,  G02F1/133 ,  G02F1/1335 ,  G02F1/137

    Abstract: An optical system including a lighting component and a switchable diffuser in optical communication with the lighting component. The optical system may further include a low absorbing optical component. At least one outer surface of the switchable diffuser and/or the low absorbing optical component includes light redirecting structures. When the switchable diffuser is in a first state and the optical system produces a light output, the light redirecting structures are configured to increase the full width at half-maximum (FWHM) of the light output of the optical system in at least one direction by at least 5 degrees relative to that of an otherwise equivalent optical system that does not include the light redirecting structures.

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