FIELD: optics.
SUBSTANCE: optical device is disclosed, which projects one or more artificially magnified images, marked by one or more laser static two-dimensional (2D) images. Static two-dimensional image(s), marked by laser on/to this device, and artificially magnified image(s), projected by said device, help to determine document authenticity (for example, page with ID data) or product, where they are used.
EFFECT: some versions of device according to invention also provide high resistance to forgeries or changes and wear.
15 cl, 6 dwg
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Authors
Dates
2017-03-28—Published
2012-01-27—Filed