Optically variable security element, and value document containing the optically variable security element
View Patent ↗An optically variable security element contains a motif region. An optically variable main motif has a contour that is visible to a viewer in the motif region at at least a first viewing angle, and the optically variable main motif includes substructures that are visible to the viewer. The visible substructures are visible along the contour of the main motif. The substructures are sub-motifs that are visible to the viewer, and each of the sub-motifs are provided with a contour.
1 . An optically variable security element having a motif region, wherein:
an optically variable main motif having a contour in the motif region is visible to a viewer at least at a first viewing angle, and
the optically variable main motif comprises substructures that are visible to the viewer, the visible substructures being visible along the contour of the main motif,
wherein
the substructures are submotifs that are visible to the viewer, and
each of the submotifs has a submotif contour;
wherein peripheral sections of each submotif having a maximum distance away from an inner section of the main motif form the contour of the main motif;
wherein the main motif is visible differently as a function of the viewing angle, and at at least one second viewing angle that is different from the first viewing angle the optically variable main motif is visible with a smaller or greater area, at a different position and/or with a different degree of rotation than at the first viewing angle.
2 . The optically variable security element according to claim 1 , wherein the contour of the main motif encloses the inner section of the main motif, and/or
wherein the submotif contour of each of the submotifs encloses an inner section of each of the submotifs.
3 . The optically variable security element according to claim 1 , wherein the main motif has a main motif shape and each of the submotifs has a submotif shape, the submotif shape of at least one of the submotifs being different from the main motif shape of the main motif.
4 . The optically variable security element according to claim 3 , wherein at least two of the submotifs have a different submotif shape to one another or
wherein the submotifs have an identical submotif shape.
5 . The optically variable security element according to claim 1 , wherein the main motif is represented only by its contour and/or each submotif is respectively represented only by its submotif contour.
6 . The optically variable security element according to claim 1 , wherein the submotifs comprise sub-submotifs, which are arranged along the submotif contour of the respective submotif.
7 . The optically variable security element according to claim 6 , wherein the sub-submotifs have a sub-submotif shape and the sub-submotif shape of at least one of the sub-submotifs is different from a main motif shape of the main motif and/or different from a submotif shape of at least one of the submotifs.
8 . The optically variable security element according to claim 1 , wherein the submotifs form at least 10% of a total length of the contour of the main motif.
9 . The optically variable security element according to claim 1 , wherein a spacing is respectively visible between two neighboring submotifs, wherein the spacings between the submotifs form less than 70% of a total length of the contour of the main motif.
10 . The optically variable security element according to claim 1 , wherein the contour of the main motif is visible to the viewer by alternately bright and dark sections.
11 . The optically variable security element according to claim 1 , wherein the optically variable main motif comprises submotifs that are visible at the second viewing angle, an area of each of the submotifs at the second viewing angle being equal to, less or greater than an area of each of the submotifs at the first viewing angle.
12 . The optically variable security element according to claim 1 , wherein the optically variable main motif comprises submotifs that are visible at the second viewing angle, a number of submotifs at the second viewing angle being equal to, less or greater than a number of submotifs at the first viewing angle.
13 . The optically variable security element according to claim 1 , wherein the optically variable security element defines an x-y plane with an x axis and a y axis, and a transition from a first viewing angle to a further viewing angle being performable by tilting the optically variable security element about the x axis.
14 . The optically variable security element according to claim 13 , wherein a transition from a third viewing angle to at least one fourth viewing angle is performable by tilting the optically variable security element about the y axis, the submotifs differing at the third viewing angle and the fourth viewing angle, wherein
the main motif changes when tilting about the x axis and does not change when tilting about the y axis; and/or
the submotifs differ at the third viewing angle and the fourth viewing angle in size and/or in a ratio of dark to bright sections, with a total area of the submotifs and/or an area of the submotifs remaining constant.
15 . The optically variable security element according to claim 1 , wherein the optically variable security element comprises an arrangement of directionally reflecting microreflectors which generate the main motif and the submotifs for the viewer as a function of the viewing angle, wherein
the microreflectors are micromirrors; and/or
the arrangement comprises a relief structure having a reflection-increasing coating, or a metal coating, an optically variable coating, an optically variable multilayer structure, or an HRI coating; and/or
the arrangement comprises an embossed embossing lacquer layer.
16 . A document of value having an optically variable security element according to claim 1 .
17 . An optically variable security element having a motif region, wherein:
an optically variable main motif having a contour in the motif region is visible to a viewer at least at a first viewing angle,
the optically variable main motif comprises substructures that are visible to the viewer, the visible substructures being visible along the contour of the main motif,
the substructures are submotifs that are visible to the viewer, and
each of the submotifs has a submotif contour;
wherein the submotifs comprise sub-submotifs, which are arranged along the submotif contour of the respective submotif.
18 . The optically variable security element according to claim 17 , wherein the main motif has a main motif shape and each of the submotifs has a submotif shape, the submotif shape of at least one of the submotifs being different from the main motif shape of the main motif.
19 . An optically variable security element having a motif region, wherein:
an optically variable main motif having a contour in the motif region is visible to a viewer at least at a first viewing angle,
the optically variable main motif comprises substructures that are visible to the viewer, the visible substructures being visible along the contour of the main motif,
the substructures are submotifs that are visible to the viewer, and
each of the submotifs has a submotif contour;
wherein the optically variable security element defines an x-y plane with an x axis and a y axis, and a transition from the first viewing angle to a further viewing angle being performable by tilting the optically variable security element about the x axis;
wherein a transition from a third viewing angle to at least one fourth viewing angle is performable by tilting the optically variable security element about the y axis, the submotifs differing at the third viewing angle and the fourth viewing angle,
wherein the main motif changes when tilting about the x axis and does not change when tilting about the y axis; and/or the submotifs differ at the third viewing angle and the fourth viewing angle in size and/or in a ratio of dark to bright sections.
20 . The optically variable security element according to claim 19 , wherein the main motif has a main motif shape and each of the submotifs has a submotif shape, the submotif shape of at least one of the submotifs being different from the main motif shape of the main motif.