MULTI-LAYERED POLYMERIC SECURITY ELEMENT WITH OPTICALLY VARIABLE EFFECT (VARIANTS)

摘要

The invention relates to counterfeit-proof printed products and concerns a multi-layered polymeric security element having an optically variable effect. The security element is configured as a structure in which at least one layer comprises a relief microraster structure and a second layer comprises a printed raster of microimages that are arranged in points of the printed raster. The spatial period of the printed raster is determined by the spatial period of the relief microraster structure. The elements of the relief microraster structure are focusing mirror elements, such as micromirrors, disposed inside the element in points of the relief raster. The focusing mirror elements can be micro-bumps embossed in a varnished layer or phase Fresnel zone plates to which a thin reflective or semi-transparent reflective layer of metal is applied.