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    OPTICAL FILM AND PACKAGE
    22.
    发明公开
    OPTICAL FILM AND PACKAGE 审中-公开

    公开(公告)号：US20240125978A1

    公开(公告)日：2024-04-18

    申请号：US18263221

    申请日：2022-01-25

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Ryan T. Fabick ,  Matthew B. Johnson ,  Kyle M. Nesheim

    IPC: G02B1/04 ,  G02B5/28

    CPC classification number: G02B1/04 ,  G02B5/283 ,  G02B5/287

    Abstract: A package for protecting a light sensitive material is disclosed. The package includes an optical film including a plurality of polymeric layers. For a substantially normally incident light, an optical transmittance of the optical film versus wavelength includes a band edge separating a first wavelength range including at least wavelengths from about 360 nm to about 400 nm from a second wavelength range including at least wavelengths from about 520 nm to about 680 nm. The optical film has an average optical transmittance of less than about 15% in the first wavelength range and an average optical transmittance of greater than about 70% in the second wavelength range.

    DISPLAY OPTICAL FILM AND BACKLIGHT UNIT
    23.
    发明公开
    DISPLAY OPTICAL FILM AND BACKLIGHT UNIT 审中-公开

    公开(公告)号：US20240045261A1

    公开(公告)日：2024-02-08

    申请号：US18381412

    申请日：2023-10-18

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Gilles J. Benoit ,  Carl A. Stover ,  Matthew B. Johnson ,  Ryan T. Fabick ,  Quinn D. Sanford

    IPC: G02F1/1335 ,  G02F1/13357

    CPC classification number: G02F1/133533 ,  G02F1/133605

    Abstract: An optical stack for reflecting and transmitting light in a predetermined wavelength range includes stacked first and second optical films, the predetermined wavelength range defining a first wavelength range and a remaining wavelength range. For normally incident light and for each wavelength in a first wavelength range, the first optical film substantially reflects light having a first polarization state, and substantially transmits light having a second polarization state. For each of the first and second polarization states, for wavelengths in the first wavelength range, the second optical film has a maximum optical transmittance Tmax for light incident at a first incident angle, and an optical transmittance Tmax/2 for light incident at a second incident angle, where the second incident angle is greater than the first incident angle by less than about 50 degrees. For wavelengths in the remaining wavelength range, the second optical film reflects at least 80% of light.

    OPTICAL STACK AND DISPLAY
    25.
    发明公开
    OPTICAL STACK AND DISPLAY 审中-公开

    公开(公告)号：US20230350119A1

    公开(公告)日：2023-11-02

    申请号：US17780581

    申请日：2020-12-08

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Takashi Fujita ,  Hideaki Shirotori ,  Chikara Abe ,  Matthew B. Johnson ,  Brianna N. Wheeler ,  Adam D. Haag

    IPC: G02B5/30

    CPC classification number: G02B5/305

    Abstract: An optical stack includes a reflective polarizer including a plurality of interference layers and an absorbing polarizer disposed on the reflective polarizer. The plurality of interference layers transmits at least about 85% of an incident light having a first polarization state, reflects at least about 80% of the incident light having a second polarization state, and transmits less than about 0.1% of the incident light having the second polarization state. The absorbing polarizer has a first transmittance for the first polarization state and a second transmittance for the second polarization state. An average of the first and second transmittances is greater than about 0.46. The second transmittance has a first standard deviation. The optical stack has a transmittance for the second polarization state having a second standard deviation which is less than the first standard deviation by at least about 10%. A display includes the optical stack.

    BACKLIGHTING FOR DISPLAY SYSTEMS
    26.
    发明公开
    BACKLIGHTING FOR DISPLAY SYSTEMS 审中-公开

    公开(公告)号：US20230176419A1

    公开(公告)日：2023-06-08

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

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

    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.

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