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    Light source and display system incorporating same
    21.
    发明授权
    Light source and display system incorporating same 有权
    光源与显示系统相结合

    公开(公告)号：US09410677B2

    公开(公告)日：2016-08-09

    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: F21V9/14 ,  F21V13/14 ,  F21V8/00 ,  G02F1/1335

    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。

    OPTICAL SYSTEM INCLUDING LIGHT CONTROL FILM AND FRESNEL LENS
    23.
    发明公开
    OPTICAL SYSTEM INCLUDING LIGHT CONTROL FILM AND FRESNEL LENS 审中-公开

    公开(公告)号：US20240276851A1

    公开(公告)日：2024-08-15

    申请号：US18643225

    申请日：2024-04-23

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Gary T. Boyd ,  Daniel J. Schmidt ,  Caleb T. Nelson ,  Owen M. Anderson ,  Tri D. Pham ,  Encai Hao ,  Shu-Ching Fan

    IPC: H10K59/80 ,  G02B3/08

    CPC classification number: H10K59/879 ,  G02B3/08

    Abstract: An optical system includes an optical film curved about a first axis and a light control film curved about the first axis. The light control film can be disposed between a light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film can include a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

    Optical system including light control film and fresnel lens
    24.
    发明授权
    Optical system including light control film and fresnel lens 有权

    公开(公告)号：US12004410B2

    公开(公告)日：2024-06-04

    申请号：US17768421

    申请日：2020-10-29

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Gary T. Boyd ,  Daniel J. Schmidt ,  Caleb T. Nelson ,  Owen M. Anderson ,  Tri D. Pham ,  Encai Hao ,  Shu-Ching Fan

    IPC: G02B3/08 ,  H10K59/80

    CPC classification number: H10K59/879 ,  G02B3/08

    Abstract: An optical system includes a light source, an optical film curved about a first axis, and a light control film curved about the first axis and disposed between the light source and the optical film. The optical film includes a microstructured first major surface and an opposing second major surface. The microstructured first major surface defines a linear Fresnel lens including a plurality of Fresnel elements extending longitudinally along the first axis. The first major surface of the optical film faces the light control film. The light control film includes a plurality of alternating optically transmissive and optically absorptive regions extending longitudinally along the first axis such that in a cross-section orthogonal to the first axis, for at least a majority of the optically transmissive regions, a centerline between adjacent optically absorptive regions is substantially normal to a major surface of the light control film.

    LIGHT CONTROL FILM INCLUDING OPTICAL CAVITIES CONTAINING LIQUID
    28.
    发明公开
    LIGHT CONTROL FILM INCLUDING OPTICAL CAVITIES CONTAINING LIQUID 审中-公开

    公开(公告)号：US20230350107A1

    公开(公告)日：2023-11-02

    申请号：US18303276

    申请日：2023-04-19

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kevin W. Gotrik ,  Stephen J. Etzkorn ,  Nicholas A. Johnson ,  Tao Liu ,  John J. Sullivan ,  Bharat R. Acharya

    IPC: G02B5/00 ,  G02F1/153

    CPC classification number: G02B5/003 ,  G02F1/153 ,  G02B2207/123

    Abstract: A light control film includes a plurality of substantially parallel optical cavities. Each of the optical cavities has a height H along a thickness direction of the light control film and a minimum lateral dimension W along an in-plane width direction orthogonal to the thickness direction, where H≥W. The optical cavities are substantially filled with a liquid including a plurality of light absorbing particles configured to move along the thickness direction in response to one or more applied signals or fields such that the movement along the thickness direction causes each of the optical cavities to transition between a substantially opaque state and a substantially transparent state. A full viewing angle of the light control film increases when the optical cavities transition from the substantially opaque state to the substantially transparent state.

    OPTICAL FILM FOR THE REDUCTION OF OPTICAL ARTIFACTS
    29.
    发明公开
    OPTICAL FILM FOR THE REDUCTION OF OPTICAL ARTIFACTS 审中-公开

    公开(公告)号：US20230350101A1

    公开(公告)日：2023-11-02

    申请号：US18138891

    申请日：2023-04-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gary T. Boyd ,  David A. Rosen ,  Tao Liu ,  Matthew M. Philippi ,  Brett J. Sitter

    IPC: G02B1/11

    CPC classification number: G02B1/11

    Abstract: An optical film for reducing at least one of sparkle and moire in a display system includes a structured first major surface that, in at least a first cross-section in a first plane substantially orthogonal to the optical film, has a sinusoidal shape having a variable pitch of greater than about 0.5 microns. For a substantially normally incident light and blue, green, and red wavelengths that are at least 50 nm apart from each other and are disposed within respective blue, green, and red wavelength ranges, optical transmissions of the optical film versus transmitted angle for the blue, green and red wavelengths have respective blue, green, and red transmission bands disposed at angles greater than about 1 degree and having respective blue, green, and red full width at half maxima (FWHMs), at least two of which at least partially overlap.

    HIGH TRANSMISSION LIGHT CONTROL FILM
    30.
    发明申请
    HIGH TRANSMISSION LIGHT CONTROL FILM 有权

    公开(公告)号：US20230028958A1

    公开(公告)日：2023-01-26

    申请号：US17757743

    申请日：2020-12-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tao Liu ,  Nicholas A. Johnson ,  Raymond J. Kenney ,  Caleb T. Nelson ,  Daniel J. Schmidt

    IPC: G02B5/00 ,  G02B5/28 ,  G02B5/30 ,  G02B1/04

    Abstract: A light control film comprises a light input surface and a light output surface; alternating transmissive regions and absorptive regions disposed between the light input surface and the light output surface; and TIR cladding layers. The TIR cladding layer having a refractive index, nTIR. The transmissive regions alternate between high refractive index transmissive regions having a refractive index, n2, and low refractive index transmissive regions having a refractive index, n1. The absorptive regions comprise a core having a refractive index, ncore, adjacent an AR cladding layer; wherein n1

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