PROTECTED ARTICLE COMPRISING A COMBINED IMAGE AND/OR DETECTING RASTER Russian patent published in 2020 - IPC B42D25/305

Abstract RU 2726740 C2

FIELD: document security.

SUBSTANCE: protected article (10) comprising detecting raster (4) and combined image (I) or system comprising protected article (10) and another object (100), wherein protected article (10) comprises one of following elements: detecting raster (4) and combined image (I), and object comprises or forms another of following elements: detecting raster (4) and combined image (I), wherein composite image (I) consists of a plurality of embedded images (I₁), combined image (I) comprises periodic alternation according to first direction (X) of embedded image elements (i₁), detecting raster (4) comprises periodic alternation according to second direction (X; X_T) of concealing raster element (5a) with non-opening raster element (5b), size in second direction (X; X_T) of non-opening raster elements (5b) is larger than the dimension in first direction (X) of at least one image embedding element (i₁), detecting raster (4) when combined with combined image (I) enables to observe different detected images (I_r) by moving detecting raster (4) relative to combined image (I) and/or by changing observation angle.

EFFECT: disclosed is a protected article comprising a combined image and/or detecting raster.

21 cl, 74 dwg

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RU 2 726 740 C2

Authors

Dietemann Philippe

Dates

2020-07-15—Published

2016-12-23—Filed