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    BRIGHTNESS ENHANCEMENT FILM
    1.
    发明申请
    BRIGHTNESS ENHANCEMENT FILM 审中-公开
    亮度增强膜

    公开(公告)号：WO1997032226A1

    公开(公告)日：1997-09-04

    申请号：PCT/US1997003871

    申请日：1997-02-28

    Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

    Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  ALLEN, Richard, C. ,  CARLSON, Lockwood, W. ,  OUDERKIRK, Andrew, J. ,  WEBER, Michael, F. ,  KOTZ, Arthur, L. ,  NEVITT, Timothy, J. ,  STOVER, Carl, A. ,  MAJUMDAR, Biswaroop

    IPC: G02B05/30

    CPC classification number: G02B5/3083 ,  G02B5/3008 ,  G02B5/305

    Abstract: An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix in combination with light directing materials to enable control of light emitted from a lighting fixture or display. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film, and the light directing materials are chosen to control the direction of polarized light reflected from or transmitted by the optical film.

    Abstract translation: 提供了一种光学膜，其包括聚焦颗粒的分散相，该分散相设置在连续双折射矩阵内，与导光材料组合以使得能够控制从照明器具或显示器发射的光。 膜通常在一个或多个方向上通过拉伸取向。 选择分散相颗粒的尺寸和形状，分散相的体积分数，膜厚度和取向量，以获得所需波长的所需程度的漫反射和全部透射所需波长的电磁辐射 选择光导材料来控制从光学膜反射或透射的偏振光的方向。

    OPTICAL POLARIZER
    2.
    发明申请
    OPTICAL POLARIZER 审中-公开
    光学极化器

    公开(公告)号：WO1995017691A1

    公开(公告)日：1995-06-29

    申请号：PCT/US1994014324

    申请日：1994-12-20

    Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

    Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  OUDERKIRK, Andrew, J. ,  WEBER, Michael, F. ,  JONZA, James, M. ,  STOVER, Carl, A.

    IPC: G02B05/30

    CPC classification number: G02B5/3025 ,  B29C55/023 ,  B29D11/00 ,  B32B7/02 ,  B32B27/36 ,  G02B5/305 ,  G02B5/3083 ,  G02F1/133536 ,  G02F1/13362 ,  G02F2001/133545

    Abstract: A reflective polarizer and a dichroic polarizer are combined to provide an improved optical polarizer. The dichroic and reflective polarizers are typically in close proximity to each other, and are preferably bonded together to eliminate the air gap between the polarizers. The combination of the two polarizers provides a high reflectivity of one polarization and high transmission for the perpendicular polarization from the reflective polarizer side of the combined polarizer, and high absorption and transmission for light of orthogonal polarization from the dichroic polarizer side. The combination also reduces iridescence as seen in transmission and when viewed in reflection from the dichroic polarizer side. The increased extinction ratio and low reflectivity of the optical polarizer allows use of a lower extinction ratio dichroic polarizer in applications requiring a given extinction ratio and high transmission.

    Abstract translation: 将反射偏振器和二向色偏振器组合以提供改进的光学偏振器。 二向色和反射偏振器通常彼此靠近，并且优选地结合在一起以消除偏振器之间的气隙。 两个偏振器的组合提供了来自组合偏振器的反射偏振器侧的垂直偏振的一种偏振和高透射率的高反射率，以及用于来自二向色偏振器侧的正交偏振光的高吸收和透射。 该组合还减少透射中看到的虹彩，并且当从二向色偏振器侧的反射中观察时。 光偏振器的消光比和低反射率的增加使得在需要给定消光比和高透射率的应用中使用较低消光比的二向色偏振器。

    NONPOLARIZING BEAMSPLITTER
    6.
    发明申请
    NONPOLARIZING BEAMSPLITTER 审中-公开
    不分散的BEAMSPLITTER

    公开(公告)号：WO1997036195A1

    公开(公告)日：1997-10-02

    申请号：PCT/US1997003172

    申请日：1997-02-28

    Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY

    Inventor： MINNESOTA MINING AND MANUFACTURING COMPANY ,  WEBER, Michael, F. ,  OUDERKIRK, Andrew, J. ,  STOVER, Carl, A.

    IPC: G02B05/28

    CPC classification number: G02B27/283 ,  G02B5/287 ,  G02B5/305 ,  G02B5/3083 ,  G02B27/142 ,  Y10S359/90

    Abstract: A nonpolarizing beamsplitter (10) is provided, comprising a multilayered stack (11) of alternating layers (A, B) of a first material and a second material. The first material layers (A) are uniaxially birefringent, and the second material layers (B) are optionally uniaxially birefringent or isotropic. The layers have index of refraction relationships such that for an incident beam having a useful bandwidth, a p-polarized component and an s-polarized component striking the beamsplitter at any angle of incidence theta within a desired range, the beamsplitter exhibits substantially the same average reflectivity for the p-polarized component of the incident beam as for the s-polarized component. The invention also includes a method of making a nonpolarizing beamsplitter.

    Abstract translation: 提供非偏振分束器（10），其包括第一材料和第二材料的交替层（A，B）的多层堆叠（11）。 第一材料层（A）是单轴双折射的，第二材料层（B）可选地是单轴双折射的或各向同性的。 这些层具有折射率关系，使得对于具有有用带宽的入射光束，在所需范围内以任何入射角撞击分光镜的p偏振分量和s偏振分量，分束器表现出基本相同的平均值 对于s偏振分量，入射光束的p偏振分量的反射率。 本发明还包括制造非偏振分束器的方法。

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