US 12,330,441 B2
Multiple color image
Gregor Schmidt, Meudon (FR); Thomas Neuenschwander, Meudon (FR); and Christian Sailer, Meudon (FR)
Assigned to THALES DIS FRANCE SAS, Meudon (FR)
Appl. No. 17/292,442
Filed by THALES DIS FRANCE SAS, Meudon (FR)
PCT Filed Nov. 8, 2019, PCT No. PCT/EP2019/080683
§ 371(c)(1), (2) Date May 9, 2021,
PCT Pub. No. WO2020/094842, PCT Pub. Date May 14, 2020.
Claims priority of application No. 18205397 (EP), filed on Nov. 9, 2018.
Prior Publication US 2021/0370704 A1, Dec. 2, 2021
Int. Cl. B42D 25/324 (2014.01); B42D 25/23 (2014.01); B42D 25/24 (2014.01); B42D 25/373 (2014.01); B42D 25/435 (2014.01); G06K 19/077 (2006.01)
CPC B42D 25/324 (2014.10) [B42D 25/373 (2014.10); B42D 25/435 (2014.10); G06K 19/07722 (2013.01); B42D 25/23 (2014.10); B42D 25/24 (2014.10)] 24 Claims
OG exemplary drawing
 
1. A data carrier comprising:
a cover layer;
a base layer located beneath the cover layer; and
an information layer arrangement,
wherein the information layer arrangement is arranged between the cover layer and the base layer, and
wherein the information layer arrangement comprises at least two information layers, wherein a first information layer of the at least two information layers is arranged beneath the cover layer and a second information layer of the at least two information layers is arranged beneath the first information layer along an extension direction extending from the cover layer to the base layer,
wherein the first information layer and the second information layer have different optical properties, and
in that the information layer arrangement has an unmodified region and at least one modified region, the at least one modified region having at least one recess extending at least partially into the first information layer along the extension direction,
wherein the at least one modified region is configured to reflect incident electromagnetic waves whereby a first reflection spectrum is generated,
wherein the unmodified region is configured to reflect said incident electromagnetic waves whereby a second reflection spectrum is generated, and
wherein the first reflection spectrum is different from the second reflection spectrum.