FIELD: information protection.
SUBSTANCE: group of inventions relates to a set of protective devices (E) and a protected document containing such a set, while the set of protective devices consists of a multicomponent transparent device, which is a refractive and/or diffraction device affecting a phase of light radiation, and at least one micro-image matrix. At the same time, the specified multicomponent transparent device consists of a periodic two-dimensional matrix (RPU) formed from separate sections (PU), each section (PU) includes micro-optical device (1), wherein at least part of these micro-optical devices (1) has uncentered optical axis (10), and at least part of these micro-optical devices (1) is located non-periodically, that is, with different displacements of their optical axes in the specified matrix (RPU). Specified micro-image matrix (2) consists of such a number of micro-images, which corresponds to how many micro-optical devices (1) are available. Each micro-image (2) has a contour identical to a contour of corresponding section (PU), and an upper or lower surface identical to a surface of corresponding section (PU). Each micro-image (2) is subdivided into at least one miniature image (20), so that, when the specified transparent device is located opposite specified micro-image matrix (2) and an observer views the specified matrix through the specified transparent device, he/she sees, at least in the specified direction of observation, an image (S) reproduced by a combination of miniature images associated with this direction. In this case, in the same subdivision, some miniature images (20), that is, only a part of them, which makes up the first group, are distributed in such a way that, when the specified transparent device is placed opposite specified micro-image matrix (2), these miniature images (20) are located on the optical axis of corresponding micro-optical device (1).
EFFECT: obtaining a set of protective devices for a document.
18 cl, 20 dwg
