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    METHOD FOR PRODUCING A HOLOGRAM, AND SECURITY ELEMENT AND A SECURITY DOCUMENT
    21.
    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
    22.
    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
    23.
    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 method for producing a security element
    25.
    发明授权
    Security element, and method for producing a security element 有权

    公开(公告)号：US11155112B2

    公开(公告)日：2021-10-26

    申请号：US16968256

    申请日：2019-02-14

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

    Inventor： Ludwig Brehm ,  Anja Cathomen ,  Christian Schulz ,  René Staub ,  Harald Walter

    IPC: B42D25/324 ,  B42D25/328 ,  B42D25/351 ,  B42D25/373 ,  B42D25/36

    Abstract: A method and a security element with a front side and a rear side lying opposite the front side, wherein the security element has two or more security features, wherein a first security feature of the two or more security features has one or more first layers and a second security feature of the two or more security features has one or more second layers, wherein the first security feature and the second security feature are in particular arranged in register with each other, wherein the first security feature generates at least one first optically variable effect and the second security feature generates at least one second optically variable effect, wherein the at least one first optically variable effect has a first color and the at least one second optically variable effect has a second color, wherein the first color and the second color differ from each other, as well as a method for producing a security element.

    Security element
    26.
    发明授权
    Security element 有权

    公开(公告)号：US10759212B2

    公开(公告)日：2020-09-01

    申请号：US15527569

    申请日：2015-12-02

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

    Inventor： Wayne Robert Tompkin ,  Harald Walter ,  Rainer Stahl ,  Rouven Spiess ,  Rene Staub

    IPC: B42D25/364 ,  G02F1/1334 ,  B42D25/405 ,  B42D25/324 ,  B42D25/351 ,  B42D25/328 ,  B42D25/391 ,  B42D25/378 ,  G02F1/1335 ,  G02F1/1343 ,  G02F1/137 ,  B42D25/23 ,  B42D25/29

    Abstract: The invention relates to a security element (1), a security document (2) with at least one security element (1), a transfer foil (3) with at least one security element (1) as well as a method for producing a security element (1), wherein the security element has at least one layer (11) that is electrically alterable in its optical effect. It is here provided that the at least one layer (11) that is electrically alterable in its optical effect has liquid crystals (12) that can be oriented in an electric field, wherein the at least one layer (11) that is electrically alterable in its optical effect has rod-shaped dye molecules (13), and the orientations of the longitudinal axes (14) of the rod-shaped dye molecules (13) are alterable depending on the orientations of the longitudinal axes (16) of the spatially adjacent liquid crystals (12) that can be oriented in the electric field, and/or wherein the liquid crystals (12) that can be oriented in the electric field are formed in such a way that the liquid crystals (12) that can be oriented in the electric field simultaneously act as dye molecules.

    Multilayer Body and Method for Producing a Security Element
    28.
    发明申请
    Multilayer Body and Method for Producing a Security Element 审中-公开
    多层体和产生安全元素的方法

    公开(公告)号：US20150298482A1

    公开(公告)日：2015-10-22

    申请号：US14439526

    申请日：2013-11-06

    Applicant: OVD KINEGRAM AG

    Inventor： Harald Walter ,  Wayne Robert Tompkin

    IPC: B42D25/29 ,  G02B5/18 ,  G03H1/00 ,  B42D25/328 ,  G03H1/02 ,  B41F19/02 ,  G02B5/00

    CPC classification number: B42D25/29 ,  B41F19/02 ,  B42D25/324 ,  B42D25/328 ,  B42D25/342 ,  B42D25/36 ,  B42D25/373 ,  B42D25/378 ,  B42D2035/24 ,  G02B5/008 ,  G02B5/1819 ,  G02B5/1842 ,  G02B5/1852 ,  G02B5/1861 ,  G03H1/0011 ,  G03H1/0244

    Abstract: A multilayer body (1, 2, 3) and a method for producing a security element are described. The multilayer body has a metal layer (21). An optically active surface relief is molded at least in areas in a first surface of the metal layer (21) facing the upper side of the multilayer body or forming the upper side of the multilayer body and/or in a second surface of the metal layer (21) facing the underside of the multilayer body or forming the underside of the multilayer body. In at least one first area (31 to 39) of the multilayer body the surface relief is formed by a first relief structure (61). In at least one direction (617) determined by an allocated azimuth angle, the first relief structure (61) has a sequence of elevations (612) and depressions (614), the elevations (612) of which follow on from each other with a period P which is smaller than a wavelength of visible light, wherein the minima of the depressions (614) lie on a base surface and the first relief structure (61) has a relief depth t which is determined by the spacing of the maxima of the elevations (612) of the first relief structure (61) from the base surface in a direction perpendicular to the base surface. The profile shape and/or the relief depth t of the first relief structure (61) is chosen such that the colored appearance of the light (52, 53) incident on the first area (31 to 39) at least at a first angle of incidence and directly reflected by the metal layer (21) in the first area or directly transmitted through the metal layer is modified, in particular is modified by plasmon resonance of the metal layer with the incident light.

    Abstract translation: 描述了多层体（1,2,3）和安全元件的制造方法。 多层体具有金属层（21）。 至少在金属层（21）的面向多层体的上侧的第一表面的区域中形成光学活性的表面浮雕，或者形成多层体的上侧和/或在金属层的第二表面 （21）面向多层体的下侧或形成多层体的下侧。 在多层体的至少一个第一区域（31至39）中，表面浮雕由第一浮雕结构（61）形成。 在由分配的方位角确定的至少一个方向（617）上，第一浮雕结构（61）具有一系列的高度（612）和凹陷（614），其高度（612）彼此相邻，具有 周期P小于可见光的波长，其中凹陷（614）的最小值位于基面上，并且第一浮雕结构（61）具有由最大值的间隔确定的浮雕深度t 第一浮雕结构（61）的垂直于基面的方向从基部表面的高度（612）。 选择第一浮雕结构（61）的轮廓形状和/或浮雕深度t，使得入射在第一区域（31至39）上的光（52,33）的着色外观至少以第一角度 由第一区域中的金属层（21）直接反射或直接透过金属层的入射被改变，特别是通过金属层与入射光的等离子体共振来改变。

    Security Element and Security Document
    29.
    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）。

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