中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

33 records (took 0.029 seconds)

    FRONT PROJECTION SCREEN WITH HIGH CONTRAST
    1.
    发明申请
    FRONT PROJECTION SCREEN WITH HIGH CONTRAST 审中-公开
    具有高对比度的前投影屏幕

    公开(公告)号：WO2011063236A1

    公开(公告)日：2011-05-26

    申请号：PCT/US2010/057431

    申请日：2010-11-19

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY ,  LIU, Yufeng ,  YUST, David T.

    Inventor： LIU, Yufeng ,  YUST, David T.

    IPC: G03B21/56

    CPC classification number: G03B21/56

    Abstract: A light diffusing optical construction is disclosed. The optical construction includes a symmetric optical diffuser that scatters light in a first direction with a first viewing angle A H and in a second direction orthogonal to the first direction with a second viewing angle A V , where A V is substantially equal to A H . The symmetric optical diffuser includes an optically transparent first layer and a plurality of randomly arranged optically transparent beads partially embedded in the first layer leaving portions of the beads exposed. The optical construction also includes a specular reflector that reflects light that is not scattered by the symmetric optical diffuser. The specular reflector has a first average reflectance R o in the visible at zero incident angle and a second average reflectance R 60 in the visible at 60 degree incident angle. R o /R 60 is at least about 1.5. The optical construction also includes a light absorbing layer that absorbs light that is not reflected by the specular reflector.

    Abstract translation: 公开了一种光散射光学结构。 光学结构包括对称光学漫射器，其以第一视角AH在第一方向上散射光，并且在与第一方向正交的第二方向上具有第二视角AV，其中AV基本上等于AH。 对称光学漫射器包括光学透明的第一层和多个随机布置的光学透明珠，其部分地嵌入第一层中，留下珠的一部分露出。 光学结构还包括反射不被对称光漫射器散射的光的镜面反射器。 镜面反射体在零入射角可见中具有第一平均反射率Ro，在60度入射角处具有可见的第二平均反射率R60。 Ro / R60至少约为1.5。 光学结构还包括吸收未被镜面反射体反射的光的光吸收层。

    OPTICAL FILM AND POLARIZING BEAM SPLITTER
    3.
    发明申请
    OPTICAL FILM AND POLARIZING BEAM SPLITTER 审中-公开

    公开(公告)号：WO2020115679A3

    公开(公告)日：2020-06-11

    申请号：PCT/IB2019/060440

    申请日：2019-12-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： AASTUEN, David J. W. ,  YUN, Zhisheng ,  LE, John D. ,  KENT, Susan L. ,  BENOIT, Gilles J. ,  YUST, David T.

    IPC: G02B5/30 ,  G02B27/28

    Abstract: An optical film and a polarizing beam splitter (PBS) including the optical film is described. The optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack. When the optical film is disposed between, and adhered to, hypotenuses of first and second prisms to form a PBS and a cone of light is incident on the PBS making an incident angle of about 40 to 50 degrees with the optical film, the PBS has: an average optical reflectance Rs greater than about 95% for a first polarization state; an average optical transmittance Ts less than about 0.012% for the first polarization state; an average optical transmittance Tp less than about 98.5% for a second polarization state; and an average optical reflectance Rp less than about 0.25% for the second polarization state.

    OPTICAL FILM AND POLARIZING BEAM SPLITTER
    7.
    发明申请
    OPTICAL FILM AND POLARIZING BEAM SPLITTER 审中-公开

    公开(公告)号：WO2020115679A2

    公开(公告)日：2020-06-11

    申请号：PCT/IB2019/060440

    申请日：2019-12-04

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： AASTUEN, David J. W. ,  YUN, Zhisheng ,  LE, John D. ,  KENT, Susan L. ,  BENOIT, Gilles J. ,  YUST, David T.

    IPC: G02B5/30 ,  G02B27/28

    Abstract: An optical film and a polarizing beam splitter (PBS) including the optical film is described. The optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack. When the optical film is disposed between, and adhered to, hypotenuses of first and second prisms to form a PBS and a cone of light is incident on the PBS making an incident angle of about 40 to 50 degrees with the optical film, the PBS has: an average optical reflectance Rs greater than about 95% for a first polarization state; an average optical transmittance Ts less than about 0.012% for the first polarization state; an average optical transmittance Tp less than about 98.5% for a second polarization state; and an average optical reflectance Rp less than about 0.25% for the second polarization state.

Patent Agency Ranking