MULTILAYER PROTECTIVE ELEMENT AND METHOD OF ITS FABRICATION Russian patent published in 2013 - IPC B42D15/00 B32B37/00 

FIELD: process engineering.

SUBSTANCE: invention relates to protection of documents against counterfeit. Multilayer element comprises translucent first layer with multiple micro lenses and second layer arranged thereunder with multiple microscopic structures. Micro lenses are cylindrical lenses in length over 2 mm and width lthan 400 mcm arranged in compliance with raster set by first system of coordinates with axis X1 and axis Y1 other than X1. Microscopic structures represent micro images distorted across lengthwise axis in compliance with function of transformation. Said microscopic structures are arranged in compliance with raster set by first system of coordinates with axis X2 and axis Y2 other than X2. Note here that in multilayer element zone wherein overlapped are both aforesaid rasters, distance between lenses and that between centers of gravity of micro image surface, and distance between micro images of adjacent micro lenses and microscopic structures differ but no more than by 10%.

EFFECT: better protection against counterfeit.

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