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    Optical components and optical systems
    61.
    发明授权
    Optical components and optical systems 有权

    公开(公告)号：US12013559B2

    公开(公告)日：2024-06-18

    申请号：US16650519

    申请日：2018-09-28

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gregg A. Ambur ,  Jo A. Etter ,  Adam D. Haag ,  Carl A. Stover ,  Timothy J. Nevitt ,  Zhisheng Yun ,  Timothy L. Wong

    IPC: G02B5/30 ,  G02B27/28

    CPC classification number: G02B5/305 ,  G02B27/283

    Abstract: An optical system including a first optical element having a curved first major surface and an optical stack bonded and conforming to the curved first major surface of the first optical element is described. The optical stack includes a reflective polarizer substantially transmitting light having a first polarization state and substantially reflecting light having an orthogonal second polarization state and a non-adhesive flexible optical layer bonded to the reflective polarizer and comprising substantially parallel opposing first and second major surfaces. At least one location on the non-adhesive flexible optical layer has an optical retardance of less than about 100 nm or greater than about 200 nm at a wavelength of about 550 nm.

    Integral Multilayer Optical Film
    62.
    发明公开
    Integral Multilayer Optical Film 审中-公开

    公开(公告)号：US20230358934A1

    公开(公告)日：2023-11-09

    申请号：US18245290

    申请日：2021-09-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Kristopher J. Derks ,  Benjamin J. Forsythe ,  Stephen A. Johnson ,  Derek W. Patzman ,  David T. Yust ,  Steven H. Kong

    IPC: G02B5/28 ,  G02B5/02

    CPC classification number: G02B5/287 ,  G02B5/0242 ,  G02B5/3083

    Abstract: An integral multilayer optical film includes a plurality of interference layers; a structured layer disposed on the interference layers and including a plurality of particles dispersed in a binder; and a barrier layer disposed between the structured layer and the interference layers and co-extruded with the interference layers and the structured layer. The structured layer has a first major surface facing away from the interference layers and a second major surface facing the interference layers. The barrier layer causes the particles to impart a greater surface roughness to the first major surface than the second major surface so that when the optical film is illuminated with a light source, the optical film has a first average effective transmission T1 when the first major surface faces the light source and a second average effective transmission T2 when the first major surface faces away from the light source, where T1-T2≥5%.

    Backlighting for display systems
    63.
    发明授权
    Backlighting for display systems 有权

    公开(公告)号：US11782310B2

    公开(公告)日：2023-10-10

    申请号：US18073813

    申请日：2022-12-02

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Yu Hsin Lu ,  Gary T. Boyd ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Carl A. Stover ,  Adam D. Haag

    IPC: G02F1/00 ,  G02F1/13357 ,  G02B1/04 ,  G02F1/1335

    CPC classification number: G02F1/133606 ,  G02B1/04 ,  G02F1/133514 ,  G02F1/133536 ,  G02F1/133603

    Abstract: A display system includes a light source configured to emit light from a light exit surface, the emitted light having an emitted wavelength. An optical filter is disposed on the light exit surface of the light source. One or more light converting films are disposed between the optical filter and the light exit surface of the light source. The one or more light converting films are configured to receive the emitted light from the light source and convert at least portions of the received emitted light to blue, green, and red lights having respective blue, green and red wavelengths. For a substantially normally incident light and for at least an in-plane first polarization state, the optical filter reflects more than about 80% of the incident light having the emitted wavelength, and transmits greater than about 60% of the incident light for each of the blue, green and red wavelengths.

    OPTICAL FILM
    64.
    发明公开
    OPTICAL FILM 审中-公开

    公开(公告)号：US20230273359A1

    公开(公告)日：2023-08-31

    申请号：US17996695

    申请日：2021-05-03

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Lin Zhao ,  Gilles J. Benoit ,  Robert D. Taylor

    IPC: G02B5/30

    CPC classification number: G02B5/305

    Abstract: An optical film includes a plurality of polymeric layers arranged along at least a portion of a thickness of the optical film. Each polymeric layer has an average thickness less than about 300 nm. The plurality of polymeric layers includes a first polymeric layer having a largest average thickness among the plurality of polymeric layers, and a second polymeric layer disposed between a third polymeric layer and the first polymeric layer. The first and second polymeric layers are separated by N1 polymeric layers where 2 ≤N1 ≤ 10. The second and third polymeric layers are separated by N2 polymeric layers where N2 ≥ 10. The first, second and third polymeric layers have respective average thicknesses t1, t2 and t3, where t1 is greater than t2 by at least 10%, and t2 is greater than t3 by at most 2%.

    Polarizer stack
    67.
    发明授权
    Polarizer stack 有权

    公开(公告)号：US11520093B2

    公开(公告)日：2022-12-06

    申请号：US17215625

    申请日：2021-03-29

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Kristopher J. Derks

    IPC: G02B5/30 ,  G02B27/28 ,  G02F1/1335

    Abstract: A polarizer stack including an absorbing polarizer and a multilayer polymeric reflective polarizer bonded together is described. The absorbing polarizer has a first block axis and the reflective polarizer has a second block axis substantially parallel to the first block axis. The reflective polarizer may be substantially free of micro-wrinkling when the polarizer stack adhered to a glass layer is heated at 95° C. for 100 hours.

    DISPLAY LAMINATE WITH SINGLE PACKET BIAXIALLY BIREFRINGENT REFLECTIVE POLARIZER
    70.
    发明申请
    DISPLAY LAMINATE WITH SINGLE PACKET BIAXIALLY BIREFRINGENT REFLECTIVE POLARIZER 审中-公开

    公开(公告)号：US20200150329A1

    公开(公告)日：2020-05-14

    申请号：US16745427

    申请日：2020-01-17

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Kristopher J. Derks ,  Timothy J. Nevitt ,  Gilles J. Benoit

    IPC: G02B5/30 ,  G02B27/28 ,  G02F1/1335 ,  B32B17/06 ,  B29D11/00

    Abstract: Multilayer optical film reflective polarizers previously considered to have excessive off-axis color can provide adequate performance in an LC display without any high haze light diffusing layer or air gap between the reflective polarizer and the back absorbing polarizer of the display. The reflective polarizer has only one packet of microlayers, and is oriented using a standard tenter such that birefringent microlayers in the film are biaxially birefringent. The microlayers in the packet have a layer thickness profile suitably tailored to avoid excessive perceived color at normal and oblique angles. A laminate made by combining this type of reflective polarizer with an absorbing polarizer, without an air gap or any high haze light diffusing layer or structure between the polarizers, can be used and incorporated into a liquid crystal display or the like with adequate color performance both at normal incidence and oblique incidence up to a polar angle of 60 degrees.

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