PROTECTIVE ELEMENT OR DOCUMENT WITH PROTECTIVE SIGN WITH, AT LEAST, ONE SIGN DYNAMIC EFFECT SIGN Russian patent published in 2017 - IPC B42D15/00 

FIELD: physics.

SUBSTANCE: security element comprising a substrate and, at least, the first dynamic effect sign provided on a substrate that contains a dynamic effect component that responds to a light stimulus of a selected excitation wavelength or a wavelength range to create an optical spectral response, is provided. Optical spectral response dynamically changes during the observed period of time between several colour shades after and during exposure to a light stimulus. The first dynamic effect sign is provided in the region of the substrate that is near or near to, at least, one proximity sign provided on the substrate. Herewith, at least, one proximity sign has a colour shade that is selected to improve and/or complement, at least, several colour shades of the first dynamic effect sign. At the same time, at least, one proximity sign has a static colour shade that does not change in response to a light stimulus. A static colour shade is selected such that it is similar or closely related to, at least, one of several colour shades of the first dynamic effect sign.

EFFECT: proposed security element can be easily identified and authenticated without the need for sophisticated authentication tools in addition to a simple light source.

51 cl, 15 dwg