Apparatus for optical authentication of documents

Реферат: The design consists of the features of shape, pattern and configuration of an apparatus for optical authentication of documents as shown in the drawings.Drawings of the design and two variants are included wherein:Figs. 1.1 to 1.7 show the design;Figs. 2.1 to 2.7 show views of the first variant; andFigs. 3.1 to 3.7 show views of the second variant.