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    Optically Variable Element
    1.
    发明申请
    Optically Variable Element 审中-公开
    光学可变元件

    公开(公告)号：US20160167422A1

    公开(公告)日：2016-06-16

    申请号：US14892420

    申请日：2014-05-06

    Applicant: LEONHARD KURZ STIFTUNG & CO. KG ,  OVD KINEGRAM AG

    Inventor： Ludwig Brehm ,  Sebastian Mader ,  Andreas Schilling ,  Wayne Robert Tompkin ,  Harald Walter

    IPC: B42D25/328 ,  G02B5/18 ,  G02B27/42 ,  B42D25/324

    CPC classification number: B42D25/328 ,  B42D25/00 ,  B42D25/29 ,  B42D25/324 ,  B42D2035/50 ,  G02B5/1809 ,  G02B5/1861 ,  G02B27/4244 ,  G02B27/4272

    Abstract: An optically variable element has first and second diffraction gratings which are high-frequency and therefore act reflectively into the zero diffraction order. Either a first color is generated by the first diffraction grating at a particular angle of rotation and a particular angle of illumination and simultaneously a second color, different from the first color, is generated by the second diffraction grating or a visible color is generated essentially only by the first diffraction grating at a first angle of rotation and a visible color is generated essentially only by the second diffraction grating at a second angle of rotation.

    Abstract translation: 光学可变元件​​具有高频的第一和第二衍射光栅，因此反射成零衍射级。 由第一衍射光栅在特定的旋转角度产生第一颜色，并且通过第二衍射光栅产生特定的照明角度并且同时产生与第一颜色不同的第二颜色，或者基本上仅生成可见颜色 通过第一衍射光栅处于第一旋转角度，并且可见颜色基本上仅以第二旋转角度由第二衍射光栅产生。

    METHOD FOR PRODUCING A HOLOGRAM, AND SECURITY ELEMENT AND A SECURITY DOCUMENT
    2.
    发明公开
    METHOD FOR PRODUCING A HOLOGRAM, AND SECURITY ELEMENT AND A SECURITY DOCUMENT 审中-公开

    公开(公告)号：US20230286312A1

    公开(公告)日：2023-09-14

    申请号：US18141511

    申请日：2023-05-01

    Applicant: OVD Kinegram AG

    Inventor： Sebastian Mader ,  Harald Walter ,  Corrado Fraschina

    IPC: B42D25/328 ,  B42D25/324 ,  G06T15/50 ,  G06T17/10

    CPC classification number: B42D25/328 ,  B42D25/324 ,  G06T15/50 ,  G06T17/10

    Abstract: A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11). A height profile (60) of the hologram (1) is calculated from the one or more phase images (50) and the height profile (60) of the hologram (1) is incorporated into a substrate (2) to provide the hologram (1).

    Method for producing a hologram, and security element and a security document
    3.
    发明授权
    Method for producing a hologram, and security element and a security document 有权

    公开(公告)号：US11679616B2

    公开(公告)日：2023-06-20

    申请号：US16644832

    申请日：2018-09-05

    Applicant: OVD Kinegram AG

    Inventor： Sebastian Mader ,  Harald Walter ,  Corrado Fraschina

    IPC: G06T17/10 ,  G06T15/50 ,  B42D25/328 ,  B42D25/324

    CPC classification number: B42D25/328 ,  B42D25/324 ,  G06T15/50 ,  G06T17/10

    Abstract: A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11). A height profile (60) of the hologram (1) is calculated from the one or more phase images (50) and the height profile (60) of the hologram (1) is incorporated into a substrate (2) to provide the hologram (1).

    Security element, and method for producing a security element
    4.
    发明授权
    Security element, and method for producing a security element 有权

    公开(公告)号：US11345178B2

    公开(公告)日：2022-05-31

    申请号：US16496775

    申请日：2018-03-23

    Applicant: OVD Kinegram AG

    Inventor： Harald Walter ,  Corrado Fraschina ,  Sebastian Mader

    IPC: B42D25/324 ,  B42D25/328 ,  B42D25/337 ,  B42D25/373 ,  B42D25/41 ,  B42D25/23 ,  B42D25/24 ,  B42D25/29

    Abstract: A security element with one or more first microstructures, wherein the first microstructures are provided in each case in one or more tracks which are curved at least in sections or in one or more sections of a track which are curved at least in sections, and/or in each case run along one or more tracks which are curved at least in sections or along one or more sections of a track which are curved at least in sections, and a method, wherein at least one file containing image points of one or more image elements is provided, which includes the locational arrangement of the image points, and one or more tracks which are curved at least in sections or one or more sections of one or more tracks which are curved at least in sections are determined from the locational arrangement of the image points, and in the one or more tracks or sections of tracks in each case one or more first microstructures are provided which, when illuminated, provide a first item of optically variable information.

    Security Element and Security Document
    6.
    发明申请
    Security Element and Security Document 审中-公开
    安全要素和安全文件

    公开(公告)号：US20150224809A1

    公开(公告)日：2015-08-13

    申请号：US14424678

    申请日：2013-09-03

    Applicant: OVD Kinegram AG

    Inventor： Wayne Robert Tompkin ,  Harald Walter ,  Sebastian Mader

    IPC: B42D25/29

    CPC classification number: B42D25/29 ,  B42D25/00 ,  B42D25/328 ,  B42D2035/36 ,  G02B5/1866

    Abstract: The invention relates to a security element (2) with a first area (30) that is transparent in transmitted light. The security element (2) has a substrate (21) which has, in the first area (30), one or more transmissive diffraction structures which display one or more optical security features when observed in transmitted light.

    Abstract translation: 本发明涉及一种具有在透射光中透明的第一区域（30）的安全元件（2）。 安全元件（2）具有在第一区域（30）中具有在透射光中观察时显示一个或多个光学安全特征的一个或多个透射衍射结构的基板（21）。

    METHOD FOR AUTHENTICATING A SECURITY DOCUMENT
    7.
    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.

    Method for producing security elements, and security elements
    9.
    发明授权
    Method for producing security elements, and security elements 有权

    公开(公告)号：US10583680B2

    公开(公告)日：2020-03-10

    申请号：US15541181

    申请日：2016-01-05

    Applicant: OVD Kinegram AG

    Inventor： Wayne Robert Tompkin ,  Andreas Schilling ,  Sebastian Mader

    IPC: B42D25/20 ,  B42D25/328 ,  B42D25/40 ,  G07D7/207 ,  G02B5/18 ,  G03H1/00 ,  B42D15/00

    Abstract: A method for producing security elements, security elements, a security document with at least one security element as well as a transfer film with at least one security element wherein a three-dimensional object is recorded and a surface profile of the three-dimensional object, described by a function F(x,y), is determined, wherein the function F(x,y) describes the distance between the surface profile and a two-dimensional reference surface spanned by co-ordinate axes x and y at the co-ordinate points x and y. A first microstructure is determined in such a way that the structure height of the first microstructure is limited to a predetermined value smaller than the maximum distance between the surface profile and the two-dimensional reference surface, and the first microstructure provides an observer with a first optical perception which corresponds to the surface profile of the three-dimensional object described by the function F(x,y).

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