Security element, and method for producing a security element

Patent metadata

Field	Value
Publication number	US-11345178-B2
Application number	US-201816496775-A
Country	US
Kind code	B2
Filing date	Mar 23, 2018
Priority date	Mar 24, 2017
Publication date	May 31, 2022
Grant date	May 31, 2022

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.

First claim

The invention claimed is:

1. A security element with one or more microstructures providing a first item of optically variable information, wherein the one or more microstructures providing the first item of optically variable information are provided 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 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
wherein the first item of optically variable information has one or more image elements, which are composed of a plurality of image points, wherein the plurality of image points are provided by the one or more microstructures, which are provided in different ones of the tracks, or run along different ones of the tracks, and
wherein one or more of the image points moves along an allocated track when the security element is tilted and/or bent and/or rotated, when illuminated with at least one light source, and
wherein the image points move along the respective track at a constant angular speed during the tilting and/or rotation of the security element.

2. The security element according to claim 1 , wherein each of the image points is provided by an allocated one of the one or more microstructures providing the first item of optically variable information and each of the allocated one or more microstructures providing the first item of optically variable information is provided on a respectively allocated track of the one or more tracks, or runs along a respectively allocated track of the one or more tracks.

3. The security element according to claim 1 , wherein the one or more microstructures providing the first item of optically variable information provide a sequence of image elements, which produce a movement effect, a morphing effect and/or a flip effect as first optical effect when the security element is tilted and/or bent and/or rotated.

4. The security element according to claim 1 , wherein the one or more microstructures providing the first item of optically variable information produce a sequence of image elements as a first optical effect when the security element is tilted and/or bent and/or rotated.

5. The security element according to claim 1 , wherein a sequence of the image elements is produced by a movement of the image points along the tracks when the security element is tilted and/or bent and/or rotated.

6. The security element according to claim 1 , wherein at least one of the tracks is formed as a circular arc-shaped and/or circular track.

7. The security element according to claim 6 , wherein one or more center points of the circular tracks are arranged randomly or pseudo-randomly.

8. The security element according to claim 1 , wherein at least one of the tracks is formed as an elliptical track.

9. The security element according to claim 1 , wherein at least one of the tracks is formed as a closed track or an open track.

10. A security element with one or more microstructures providing a first item of optically variable information, wherein the one or more microstructures providing the first item of optically variable information are provided 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 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
wherein the first item of optically variable information has one or more image elements, which are composed of a plurality of image points, wherein the plurality of image points are provided by the one or more microstructures, which are provided in different ones of the tracks, or run along different ones of the tracks, and
wherein at least one of the tracks is formed as a circular arc-shaped and/or circular track, and
wherein two or more center points of the one or more center points of the circular tracks have a same position.

11. The security element according to claim 10 , wherein one or more of the image points moves along an allocated track when the security element is tilted and/or bent and/or rotated, when illuminated with at least one light source.

12. The security element according to claim 10 , wherein a width of at least one of the tracks changes along a progression direction of the respective track.

13. The security element according to claim 10 , wherein a radius and/or a curvature and/or a radius of curvature of at least one of the tracks changes along a progression direction of the respective track.

14. The security element according to claim 10 , wherein a width of the one or more tracks is between 3 μm and 300 μm.

15. The security element according to claim 10 , wherein a curvature of one or more of the tracks, does not change over an entire progression of the respective track.

16. The security element according to claim 10 , wherein at least one of the tracks has a different curvature progression from another of the at least one or more tracks.

17. The security element according to claim 10 , wherein at least one of the tracks has a curvature progression that is identical to another of the at least one or more tracks.

18. The security element according to claim 10 , wherein at least one of the tracks has a curvature of between 0.02 mm −1 and 2 mm −1 .

19. The security element according to claim 10 , wherein the security element has one or more microstructures providing a second item of optical information.

20. The security element according to claim 19 , wherein at least one of the microstructures providing the first item of optically variable information comprises a plurality of microstructure elements and at least one of the microstructures providing the second item of optical information comprises a plurality of microstructure elements.

21. The security element according to claim 19 , wherein the microstructures providing the second item of optical information are provided in an area of a surface which does not overlap with the tracks.

22. The security element according to claim 19 , wherein the microstructures providing the second item of optical information are provided in an area of a surface which consists of two or more partial areas spaced apart from each other, which are formed striped and wherein one or more of the partial areas overlap with an allocated interruption area of the one or more tracks at least in areas.

23. The security element according to claim 10 , wherein at least one of the tracks has one or more interruptions, in which the microstructures are not provided.

24. The security element according to claim 23 , wherein at least one of the interruptions is arranged in one or more intersection areas of the respective one or more tracks.

25. The security element according to claim 24 , wherein at least one of the interruptions is arranged outside one or more intersection areas of the respective one or more tracks.

26. The security element according to claim 24 , wherein at least one of the interruptions is randomly and/or pseudo-randomly distributed parallel and/or perpendicular to one or more tangent vectors of the respective track.

27. The security element according to claim 10 , wherein one or more of the tracks and/or one or more of the microstructures pr

Assignees

• Ovd Kinegram Ag

Inventors

• Walter Harald
• Fraschina Corrado
• Mader Sebastian

Classifications

• B42D25/373

  Metallic materials · CPC title

• B42D25/29

  Securities; Bank notes · CPC title

• B42D25/41

  using electromagnetic radiation (B42D25/435 takes precedence) · CPC title

• B42D25/485

  by electronic processing means · CPC title

• B42D25/328

  Diffraction gratings; Holograms · CPC title