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    LOW LAYER COUNT REFLECTIVE POLARIZER WITH OPTIMIZED GAIN
    42.
    发明申请
    LOW LAYER COUNT REFLECTIVE POLARIZER WITH OPTIMIZED GAIN 审中-公开
    具有优化增益的低层反射偏振器

    公开(公告)号：US20150316697A1

    公开(公告)日：2015-11-05

    申请号：US14800982

    申请日：2015-07-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Kristopher J. Derks ,  Michael F. Weber ,  Shandon D. Hart ,  Carl A. Stover

    IPC: G02B5/30

    CPC classification number: G02B5/3066 ,  G02B5/3041 ,  G02B5/305 ,  G02B5/3083 ,  G02B27/283

    Abstract: Multilayer reflecting polarizing films are disclosed having increased in-plane refractive index differences between adjacent microlayers along both the pass and block axis, and having negative refractive index differences between adjacent microlayers along the thickness or z-axis. Major front and back surfaces of the film exposed to air provide a Fresnel reflectivity component to the pass axis reflectivity, and the microlayers provide a microlayer component to the pass axis reflectivity, such microlayer component preferably having a reflectivity of p-polarized light that increases with incidence angle faster than the Fresnel reflectivity component decreases so as to substantially avoid off-axis gain peaks for p-polarized light. The films preferably utilize a relatively small total number of microlayers, arranged in a single coherent stack with monotonic optical repeat unit thickness profile, and at least some microlayers preferably include polyethylene naphthalate or a copolymer thereof.

    Abstract translation: 公开了多层反射偏振膜，其在沿着通过和阻挡轴的相邻微层之间具有增加的面内折射率差异，并且沿着厚度或z轴具有相邻微层之间的负折射率差异。 暴露于空气的薄膜的主要前后表面为通过轴反射率提供菲涅尔反射率分量，微层为通过轴反射率提供微层成分，这种微层成分优选具有随着偏振光的增加而增加的p偏振光的反射率 比菲涅耳反射率分量更快的入射角降低，从而基本上避免了p偏振光的离轴增益峰值。 薄膜优选利用相对较小的总数量的微层，其布置在具有单调光学重复单元厚度分布的单个相干叠层中，并且至少一些微层优选包括聚萘二甲酸乙二醇酯或其共聚物。

    BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER
    43.
    发明申请
    BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER 有权

    公开(公告)号：US20250035984A1

    公开(公告)日：2025-01-30

    申请号：US18917254

    申请日：2024-10-16

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Matthew E. Sousa ,  Bharat R. Acharya ,  Benjamin J. Forsythe ,  Robert D. Taylor ,  Quinn D. Sanford

    IPC: G02F1/13357 ,  G02F1/1333 ,  G02F1/1335

    Abstract: A backlight including a front reflector disposed on a back reflector and defining a cavity therebetween. For a visible wavelength range and for a first incident angle of less than 5 degrees, the front reflector has an average transmittance of less than 20% for the incident light polarized along a first direction, and an average transmittance of between 20% and 85% for the incident light polarized along an orthogonal second direction. For a visible wavelength range and for a second incident angle of greater than 40 degrees, the front reflector has an average transmittance of less than 40% for each of the first and second directions. For at least a first wavelength in an infrared wavelength range, the front reflector has a transmittance of greater than about 40% for each of the first and second incident angles and for each of the first and second directions. For each of the first and second incident angles, for the incident light polarized along each of the first and second directions, the back reflector has a transmittance of greater than 30% for the first infrared wavelength, and an average transmittance of less than 20% in the visible range.

    BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER
    45.
    发明公开
    BACKLIGHT WITH COLLIMATING REFLECTIVE POLARIZER 审中-公开

    公开(公告)号：US20240231154A1

    公开(公告)日：2024-07-11

    申请号：US18558425

    申请日：2022-05-17

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Matthew E. Sousa ,  Bharat R. Acharya ,  Benjamin J. Forsythe ,  Robert D Taylor ,  Quinn D. Sanford

    IPC: G02F1/13357 ,  G02F1/1333 ,  G02F1/1335

    CPC classification number: G02F1/13362 ,  G02F1/13338 ,  G02F1/133504 ,  G02F1/133553 ,  G02F1/133615 ,  G02F2203/11

    Abstract: A backlight including a front reflector disposed on a back reflector and defining a cavity therebetween. For a visible wavelength range and for a first incident angle of less than 5 degrees, the front reflector has an average transmittance of less than 20% for the incident light polarized along a first direction, and an average transmittance of between 20% and 85% for the incident light polarized along an orthogonal second direction. For a visible wavelength range and for a second incident angle of greater than 40 degrees, the front reflector has an average transmittance of less than 40% for each of the first and second directions. For at least a first wavelength in an infrared wavelength range, the front reflector has a transmittance of greater than about 40% for each of the first and second incident angles and for each of the first and second directions. For each of the first and second incident angles, for the incident light polarized along each of the first and second directions, the back reflector has a transmittance of greater than 30% for the first infrared wavelength, and an average transmittance of less than 20% in the visible range.

    Optical Film
    47.
    发明公开
    Optical Film 审中-公开

    公开(公告)号：US20230204839A1

    公开(公告)日：2023-06-29

    申请号：US17996540

    申请日：2021-05-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

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

    IPC: G02B5/30 ,  B32B27/08

    CPC classification number: G02B5/305 ,  B32B27/08 ,  G02F1/13338

    Abstract: An optical film includes a plurality of polymeric layers. A plot of an average layer thickness versus a layer number of the polymeric layers includes a knee region separating a left region including at least N1 sequentially arranged polymeric layers where the polymeric layers have lower layer numbers from a middle region including at least N2 sequentially arranged polymeric layers where the polymeric layers have higher layer numbers. N1 is greater than about 50 and N2 is greater than about 10. A linear fit to the at least N1 sequentially arranged polymeric layers in the left region has a positive linear slope having a magnitude of greater than about 0.04 nm per layer number, and a linear fit to the at least N2 sequentially arranged polymeric layers in the middle region has a negative linear slope having a magnitude of greater than about 0.05 nm per layer number.

    POLARIZER FILM
    49.
    发明申请
    POLARIZER FILM 有权

    公开(公告)号：US20220179143A1

    公开(公告)日：2022-06-09

    申请号：US17594160

    申请日：2020-04-10

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： Carl A. Stover ,  Kristopher J. Derks ,  Stephen A. Johnson ,  Benjamin J. Forsythe

    IPC: G02B5/30 ,  G02B5/08 ,  C08G63/00 ,  B32B27/36 ,  B32B27/08

    Abstract: Multi-layer optical films that can be utilized as polarizer or mirror films and can be incorporated into optical stacks. The optical film includes a plurality of alternating polymeric first and second interference layers numbering greater than 50 and disposed between, and integrally formed with, first and second skin layers, each of the first and second interference layers has an average thickness less than 250 nm. The first and second interference layers and the first and second skin layers are compositions that include polyester.

    DISPLAY OPTICAL FILM AND BACKLIGHT UNIT
    50.
    发明申请
    DISPLAY OPTICAL FILM AND BACKLIGHT UNIT 有权

    公开(公告)号：US20220137455A1

    公开(公告)日：2022-05-05

    申请号：US17435203

    申请日：2020-02-18

    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

    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.

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