OPTICAL VARIABLE DEVICE

The invention refers to an optical variable device and finds application as a decorative and security element against counterfeiting of documents, securities, goods, etc. It includes a first relief diffractive structure (1) with Fresnel structure of a arbitrary object (3). A second relief diffractive structure (4) is added over the first one. The second relief diffractive structure (4) consists of areas (7) corresponding to the areas with the same colour of the object and consisting of depressions (5), equal or different in shape, size and direction with distance d between them, where 0.150µm ≤d≤ 10µm. The profile of the depressions is made up from 2 to 7 discreet planes (6) with height hi, where 0.02µm≤ hi ≤ 1µm, and in each area (7) the number and the height hi of the planes (6) and the distance d are the same and depend on the colour of the object in the relevant area (7)'. The planes (6) can have a stepped profile. The depressions (5) can be arranged in a two-dimensional matrix М with axes X and Y, located under angle 45о≥β≥135о, wherein 0,150µm≥d≥0,50µm and for each area (7) the distance d and the angle β are the same.