Method for producing security elements, and security elements
US11472216B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2020 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Jan 15, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/207
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.