FIELD: micro-optical devices.
SUBSTANCE: invention is related to a module consisting of micro-optical devices, such as micro-lenses, arranged in a two-dimensional grid; and micro-images arranged in a grid having a number of micro-images at most equal to the number of micro-optical devices. Each micro-image is divided into N image elements arranged in such a way as to reproduce for the observer and through a two-dimensional grid of micro-optical devices, N images visible from N different points of view, i.e. at N playback angles. Each of these N images corresponds to the base or registration point of observation of a given relief pattern consisting of at least one moving object. The image elements that make up a given object in these N images are distributed into micro-image grids so that they appear depending on the angle of reproduction through various micro-optical devices, describing the trajectory of the object's projection on the plane of a two-dimensional grid of micro-optical devices relative to the base observation point.
EFFECT: invention provides an increased level of protection against unauthorized reproduction.
18 cl, 22 dwg
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