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    OPTICAL FILM ASSEMBLIES
    5.
    发明申请
    OPTICAL FILM ASSEMBLIES 审中-公开

    公开(公告)号：US20200341336A1

    公开(公告)日：2020-10-29

    申请号：US16959710

    申请日：2019-01-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Tri D. Pham ,  Corey D. Balts ,  Felix B Bierbaum ,  Encai Hao ,  Simon P. Janeczko ,  Thomas J. Ludemann ,  Trevor W. Stolber ,  Qingbing Wang ,  Joseph D. Wheeldon

    IPC: G02F1/13357 ,  F21V8/00

    Abstract: An optical film assembly comprises a light redirecting film (110) having a first structured major surface (112) and a second, opposed major surface (114). An optical adhesive layer (120) is disposed on the second major surface of the light redirecting film. A light diffusion film (140) comprises a first major surface (142) comprising a light diffusion surface and a second, opposed major surface (144). A plurality of discrete optical decoupling structures (146) project from the light diffusion surface and contact the optical adhesive layer. An air gap (148) is defined between the first major surface of the light diffusion film and the optical adhesive layer. Embodiments of optical film assemblies described herein are useful, for example, for hiding optical defects and improving the brightness uniformity of light emitted by a light source.

    High transmission light control film
    8.
    发明授权
    High transmission light control film 有权

    公开(公告)号：US11947135B2

    公开(公告)日：2024-04-02

    申请号：US16768910

    申请日：2018-12-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Daniel J. Schmidt ,  Caleb T. Nelson ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  John A. Wheatley ,  Kenneth A. Epstein ,  Gary T. Boyd ,  Corey D. Balts

    IPC: G02B5/00 ,  G02B5/122 ,  G02B5/128

    CPC classification number: G02B5/003 ,  G02B5/122 ,  G02B5/128

    Abstract: A light control film is described comprising alternating transmissive regions and absorptive regions disposed between a light input surface and a light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, the alternating transmissive regions and absorptive regions have a transmission as measured with a spectrophotometer at a viewing angle of 0 degrees of at least 35, 40, 45, or 50% for a wavelength of the range 320-400 nm (UV) and/or at least 65, 70, 75, or 80% for a wavelength of the range 700-1400 nm (NIR). In another embodiment, the absorptive regions block light at the light input surface and light output surface and the maximum surface area that is blocked is less than 20% of the total alternating transmissive regions and absorptive regions. Also described are various optical communication systems comprising the light control films described herein and methods.

    HIGH TRANSMISSION LIGHT CONTROL FILM
    9.
    发明申请
    HIGH TRANSMISSION LIGHT CONTROL FILM 审中-公开

    公开(公告)号：US20200341173A1

    公开(公告)日：2020-10-29

    申请号：US16768910

    申请日：2018-12-12

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Daniel J. Schmidt ,  Caleb T. Nelson ,  Kevin W. Gotrik ,  Raymond J. Kenney ,  John A. Wheatley ,  Kenneth A. Epstein ,  Gary T. Boyd ,  Corey D. Balts

    IPC: G02B5/00 ,  G02B5/128 ,  G02B5/122

    Abstract: A light control film is described comprising alternating transmissive regions and absorptive regions disposed between a light input surface and a light output surface. The absorptive regions have an aspect ratio of at least 30. In some embodiments, the alternating transmissive regions and absorptive regions have a transmission as measured with a spectrophotometer at a viewing angle of 0 degrees of at least 35, 40, 45, or 50% for a wavelength of the range 320-400 nm (UV) and/or at least 65, 70, 75, or 80% for a wavelength of the range 700-1400 nm (NIR). In another embodiment, the absorptive regions block light at the light input surface and light output surface and the maximum surface area that is blocked is less than 20% of the total alternating transmissive regions and absorptive regions. Also described are various optical communication systems comprising the light control films described herein and methods.

    GRADED DIFFUSER
    10.
    发明申请
    GRADED DIFFUSER 审中-公开

    公开(公告)号：US20180217300A1

    公开(公告)日：2018-08-02

    申请号：US15568832

    申请日：2016-04-14

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gary T. Boyd ,  Tri D. Pham ,  Nicholas A. Johnson ,  Oanh V. Pham ,  Sara S. Merritt ,  Stephen J. Etzkorn ,  Haiyan Zhang ,  Corey D. Balts ,  Joseph T. Aronson

    IPC: G02B5/02 ,  F21V8/00 ,  G02F1/1335 ,  C25D3/04 ,  C25D3/38 ,  C25D5/12

    Abstract: A diffuser including opposing structured first and second major surfaces is described. The first major surface includes a first plurality of surface structures providing a uniform first haze. The second major surface includes a first portion adjacent an edge and a second portion adjacent the first portion. The first portion includes a first region and a second region between the first region and the second portion. The second major surface includes a second plurality of surface structures providing a uniform second haze over the second portion and providing a third haze in the first portion. The third haze in the first region is higher than the second haze, and the third haze in the second region is monotonically decreasing. The second portion has a surface area of at least 90 percent of a surface area of the second major surface.

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