PROTECTION ELEMENT AND METHOD OF ITS FABRICATION Russian patent published in 2009 - IPC B42D15/00 G07D7/00 B32B27/00 

FIELD: process engineering.

SUBSTANCE: proposed invention relates to protection element intended for protecting valuable objects. Said element has first optically active layer arranged on, at least, several sections, and containing cholesteric LC material. In compliance with this invention, there is second optically active layer arrange on, at least, several sections, both layers being located one above the other in overlapping section. First optically active layer selectively reflects 1^st-wave-range light with first direction of circular polarization, while second layer reflects, either independently of together with aforesaid first layer in overlapping section, 2^nd-wave-range light with second direction of circular polarization. Note here that first optically active layer reflects only visible spectrum portion light in the first direction of observation, while, in the second direction of observation, it reflects 1^st colour visible light. Note also that first and/or second optically active layer is made in the form of symbols or patterns.

EFFECT: higher degree of protection against counterfeit.

69 cl, 19 dwg