EP 4210962 A1 20230719 - OPTICALLY VARIABLE SECURITY ELEMENT
Title (en)
OPTICALLY VARIABLE SECURITY ELEMENT
Title (de)
OPTISCH VARIABLES SICHERHEITSELEMENT
Title (fr)
ÉLÉMENT DE SÉCURITÉ OPTIQUEMENT VARIABLE
Publication
Application
Priority
- DE 102020005607 A 20200914
- EP 2021025292 W 20210803
Abstract (en)
[origin: WO2022053174A1] The invention relates to an optically variable security element (12) having a reflective flat region (20), which, in front illumination, shows at least two optically variable effects which can be detected from different viewing directions and appear with different first and second colours, and which, in rear illumination, shows an image in a third different colour. According to the invention, the reflective flat region (20) contains two separate relief structures (24, 34) which form a lower and a higher relief structure and which overlap in a feature region. The higher and lower relief structure (24, 34) are each provided with a reflection-increasing coating (26, 36) which follow the course of the relief and which have a wavelength-dependent reflection and transmission in the visible spectral range and have at least one reflection band and at least one transmission band. One reflection band of the second reflection-increasing coating (26) is at least partially in a transmission band of the first reflection-increasing coating (36) and overlaps at least one transmission band of the two reflection-increasing coatings (26, 36).
IPC 8 full level
B42D 25/324 (2014.01); B42D 25/328 (2014.01); B42D 25/351 (2014.01); B42D 25/36 (2014.01); B42D 25/373 (2014.01)
CPC (source: EP)
B42D 25/324 (2014.10); B42D 25/328 (2014.10); B42D 25/351 (2014.10); B42D 25/36 (2014.10); B42D 25/373 (2014.10)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102020005607 A1 20220317; CN 116075435 A 20230505; EP 4210962 A1 20230719; EP 4210962 B1 20241009; WO 2022053174 A1 20220317
DOCDB simple family (application)
DE 102020005607 A 20200914; CN 202180062990 A 20210803; EP 2021025292 W 20210803; EP 21752496 A 20210803