Title:
METHOD FOR PRODUCING SECURITY ELEMENT, AND SECURITY ELEMENT
Document Type and Number:
Japanese Patent JP2021060599
Kind Code:
A
Abstract:
To provide a method for producing a security element, and the security element.SOLUTION: According to the present invention, a three-dimensional object is recorded, and further a surface profile 37 of the three-dimensional object described by a function F(x, y) is determined. The function F(x, y) describes a distance between the surface profile 37 and a two-dimensional reference surface 32 spanned by co-ordinate axes x, y at co-ordinate points x, y. Furthermore, a first microstructure 44 is determined. The first microstructure 44 is determined in such a way that structure heights 43, 53 of the first microstructure 44 are limited to predetermined values smaller than a maximum distance 31 between the surface profile 37 and two-dimensional reference surface. Furthermore, the first microstructure is determined in such a way that the first microstructure 44 provides an observer with a first optical perception which corresponds to the surface profile 37 of the three-dimensional object described by the function F(x, y).SELECTED DRAWING: Figure 3b
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Inventors:
TOMPKIN WAYNE ROBERT
ANDREAS SCHILLING
MADER SEBASTIAN
ANDREAS SCHILLING
MADER SEBASTIAN
Application Number:
JP2020207806A
Publication Date:
April 15, 2021
Filing Date:
December 15, 2020
Export Citation:
Assignee:
OVD KINEGRAM AG
International Classes:
G02B5/18; B42D25/23; B42D25/24; B42D25/29; B42D25/30; B42D25/324; B42D25/445
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Attorney, Agent or Firm:
Cleo International Law & Patent Office