POLARIZING BEAM SPLITTER
    25.
    发明申请
    POLARIZING BEAM SPLITTER 审中-公开
    极化光束分离器

    公开(公告)号:WO2002101427A2

    公开(公告)日:2002-12-19

    申请号:PCT/US2002/011326

    申请日:2002-04-12

    CPC classification number: G02B27/283 Y10T428/24942

    Abstract: The present invention provides a unique polarizing beam splitter (PBS) that is suitable for use in projection systems and displays. The PBS contains at least one prism having at least one major surface and having a refractive index of at least about 1.6 and a birefringent film disposed on the major surface of the prism. The birefringent film is a multi-layer film having at layers of at least a first material and a second material. After uniaxial stretching, the film exhibits a refractive index difference of less than about 0.15 units in the stretched direction.

    Abstract translation: PBS适用于投影系统和显示器。 偏振分束器(PBS)包含至少一个具有至少一个主表面并具有至少约1.6的折射率的棱镜,并且双折射膜设置在棱镜的主表面上。 本发明提供了具有至少第一材料和第二材料的独特的双折射多层膜。 在单轴拉伸之后,膜在拉伸方向上的折射率差小于约0.15单位。

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