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    Optically variable element
    31.
    发明授权
    Optically variable element 有权

    公开(公告)号：US09798055B2

    公开(公告)日：2017-10-24

    申请号：US14361098

    申请日：2012-11-28

    Applicant: OVD Kinegram AG

    Inventor： Harald Walter ,  Wayne Robert Tompkin ,  Sebastian Mader

    IPC: G02B5/18 ,  G02B5/28 ,  B42D25/29 ,  G02B5/00 ,  B42D25/405

    CPC classification number: G02B5/285 ,  B42D25/29 ,  B42D25/405 ,  B42D2033/24 ,  B42D2035/14 ,  B42D2035/24 ,  G02B5/00 ,  G02B5/286 ,  G02B5/287

    Abstract: The invention relates to an optically variable element as well as a method for the production thereof. In a first area the optically variable element has at least one first color region which in the event of illumination generates a color dependent on the angle of observation and/or angle of illumination. The first color region has two or more zones (41 to 47) arranged next to each other. The two or more zones arranged next to each other have in each case a width and/or length dimension of less than 300 μm. In at least one first zone (41) of the zones (41 to 47) of the first color region a thin-film interference filter (15) is provided with at least one interference layer (17). The interference layer (17) of the thin-film interference filter (15) has a first average thickness (d1) in the first zone (41). The first average thickness is chosen such that the thin-film interference filter (15) in the event of illumination at least one particular angle of observation and/or angle of illumination generates, by means of interference, a color which differs from at least one color which is generated in the event of illumination at this angle of observation and/or angle of illumination in at least one of the other zones (42 to 47) of the first color region.

    METHOD FOR AUTHENTICATING A SECURITY DOCUMENT
    36.
    发明申请
    METHOD FOR AUTHENTICATING A SECURITY DOCUMENT 有权

    公开(公告)号：US20230062072A1

    公开(公告)日：2023-03-02

    申请号：US17793460

    申请日：2021-01-14

    Applicant: KURZ Digital Solutions GmbH & Co. KG ,  OVD Kinegram AG

    Inventor： Harald Walter ,  Corrado Fraschina ,  Sebastian Mader ,  Benno Schmitzer ,  Uwe Frieser ,  Hendrik Von Prince

    IPC: G07D7/00 ,  G07D7/0043 ,  G07D7/17

    Abstract: A method for authenticating a security document by means of at least one device includes: a) providing the security document having at least one first security element and at least one second security element; b) providing the at least one device, wherein the at least one device includes at least one sensor; c) capturing first items of optical information of the at least one first security element by means of the at least one sensor of the at least one device during a first illumination, wherein at least one first dataset specifying these items of information is generated therefrom; d) capturing second items of optical information of the at least one second security element by means of the at least one sensor of the at least one device during a second illumination, wherein at least one second dataset specifying these items of information is generated therefrom; e) capturing third items of optical information of the at least one second security element by means of the at least one sensor of the at least one device during a third illumination, wherein at least one third dataset specifying these items of information is generated therefrom, wherein the second illumination differs from the third illumination; f) checking the genuineness of the security document and/or the second security element at least on the basis of the at least one second dataset and the at least one third dataset.

    SEE-THROUGH SECURITY ELEMENT
    37.
    发明申请
    SEE-THROUGH SECURITY ELEMENT 有权

    公开(公告)号：US20220324248A1

    公开(公告)日：2022-10-13

    申请号：US17616888

    申请日：2020-06-04

    Applicant: LEONHARD KURZ Stiftung & Co. KG ,  OVD Kinegram AG

    Inventor： Juri Attner ,  Philipp Schuler ,  René Staub ,  Harald Walter ,  Klaus Weber

    IPC: B42D25/351 ,  B42D25/324 ,  B42D25/373 ,  B42D25/41 ,  B42D25/445

    Abstract: A see-through security element (2), a security document (1) and a method for producing a see-through security element (2). The see-through security element has a first element with one or more transparent first partial areas and at least one reflective second partial area. The see-through security element has a second element with one or more first partial areas, which in each case in transmission form a color filter matched to a respectively assigned color, and has at least one second partial area, which is formed colorless, in particular colorless transparent, or in transmission and/or reflection forms a color filter which is matched to a color which is not assigned to any of the one or more first partial area of the second element. The first partial areas of the first element and the first partial areas of the second element at least partially overlap.

    Multilayer body
    40.
    发明授权
    Multilayer body 有权

    公开(公告)号：US11077700B2

    公开(公告)日：2021-08-03

    申请号：US15977621

    申请日：2018-05-11

    Applicant: OVD Kinegram AG

    Inventor： Andreas Schilling ,  Wayne Robert Tompkin ,  Achim Hansen

    IPC: B42D25/45 ,  B42D25/351 ,  B42D25/36 ,  B42D25/21 ,  B42D25/342 ,  B42D25/324 ,  B42D25/328 ,  B42D25/29 ,  G02B3/00

    Abstract: A multilayer body includes a transparent first layer. In the transparent first layer, a multiplicity of microlenses arranged in accordance with a microlens grid are impressed in a first region. Furthermore, the multilayer body includes a second layer, which is arranged below the first layer and in a fixed position with respect to the first layer and has a multiplicity of microimages arranged in accordance with a microimage grid and in each case in an at least regional overlap with one of the microlenses of the microlens grid for the purpose of generating a first optically variable information item. The grid pitches of the microimage grid and of the microlens grid in each case in at least one spatial direction are less than 300 μm.

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