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    OPTICAL FILTER
    1.
    发明申请
    OPTICAL FILTER 审中-公开
    光学滤镜

    公开(公告)号：WO2017213911A1

    公开(公告)日：2017-12-14

    申请号：PCT/US2017/034941

    申请日：2017-05-30

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： WHEATLEY, John A. ,  BENOIT, Gilles J. ,  BALLEN, Todd A. ,  SMITH, Kenneth L. ,  DU, Guanglei ,  KIVEL, Edward J. ,  BIERNATH, Rolf W. ,  WHITNEY, Jordan D. ,  SCHMIDT, Daniel J.

    IPC: G02B5/20

    Abstract: An optical filter including a polarizer and a visible light blocking filter is described. The polarizer is configured to transmit at least 60 percent of light in a first infrared wavelength range that is incident on the polarizer at normal incidence in a first polarization state, to transmit less than 30 percent of light in a second infrared wavelength that is incident on the polarizer at normal incidence in a second polarization state orthogonal to the first polarization state, and to transmit less than 30 percent of light in a third infrared wavelength range that is incident on the polarizer with a 50 degree angle of incidence in the second polarization state. The visible light blocking filter configured to transmit at least 60 percent of light in the first infrared wavelength range at normal incidence in the first polarization state.

    Abstract translation: 描述了包括偏光器和可见光阻挡滤光器的滤光器。 偏振器被配置为透射第一红外波长范围内的至少60％的光，该第一红外波长范围以法线入射以第一偏振状态入射在偏振器上，以透射少于30％的入射在第二红外波长上的光 在垂直于第一偏振状态的第二偏振状态下垂直入射的偏振器以及透射在第二偏振状态下以50度入射角入射在偏振器上的第三红外波长范围内的光的小于30％ 。 可见光阻挡滤光片被配置为以第一偏振态的法线入射透射第一红外波长范围中的至少60％的光。

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