公开(公告)号：US20240239129A1

公开(公告)日：2024-07-18

申请号：US18565107

申请日：2022-05-30

Applicant: OVD Kinegram AG

Inventor： Corrado FRASCHINA ,  Sebastian MADER ,  Harald WALTER ,  Gina OBERBOSSEL

IPC: B42D25/328 ,  B42D25/324 ,  B42D25/342 ,  B42D25/351 ,  B42D25/373 ,  B42D25/378 ,  B42D25/425 ,  G02B3/00 ,  G02B5/18

CPC classification number: B42D25/328 ,  B42D25/324 ,  B42D25/342 ,  B42D25/351 ,  B42D25/373 ,  B42D25/378 ,  B42D25/425 ,  G02B3/0056 ,  G02B5/1847

Abstract: A functional element 2 including at least one first relief structure 13 in at least one first area 21 and at least one metal layer 12 arranged in at least one subarea of the at least one first relief structure 13 and optionally a preferably polymeric dielectric layer on the side of the metal layer 12 which faces the observer, wherein the at least one first relief structure 13 has a periodic variation of elevations and depressions in the x- and y-direction, wherein the elevations succeed each other with a grating period Λ which is smaller than a wavelength of the light visible to the human eye, wherein the minima of the depressions define a base surface and wherein the at least one first relief structure 13 has a relief depth t. Further, a method for producing or modifying a surface and a product 1 having such a functional element 2.