OPTICAL MULTILAYER BODY AND SYSTEM
    5.
    发明公开

    公开(公告)号:EP4428749A1

    公开(公告)日:2024-09-11

    申请号:EP22889836.7

    申请日:2022-10-25

    IPC分类号: G06K19/06

    CPC分类号: G06K19/06

    摘要: An optical multilayer body (100) according to the present invention has a first main surface and a second main surface that is on the reverse side of the first main surface. This optical multilayer body (100) comprises: an optical filter layer (110) which transmits infrared light, while diffusely reflecting visible light; and a recording medium layer (120) which is arranged on the second main surface side of the optical filter layer, while having a pattern that can be read with infrared light through the optical filter layer. This optical multilayer body is configured such that the pattern is not visible through the optical filter layer.