FIELD: optics.
SUBSTANCE: micro-optic structure of diffraction array is formed on a substrate, which preferably is formed as surface structure of diffraction array. Structure of diffraction array may create for an observer a holographic or corresponding visual effect based on light diffraction. Light, diffracted from structure of diffraction array and corresponding to constructive wave length, is sent to several diffraction orders. Individual diffraction order corresponds to certain observation direction of visual effect observed at constructive wave length. Structure of diffraction array may leave free range of angles between adjacent observation directions.
EFFECT: creation of transparent, highly bright, easily discernible visual effect on substrate.
3 cl, 10 dwg
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