FIELD: products marking methods using holograms.
SUBSTANCE: N superimposed three-dimensional reflection holograms are written simultaneously. Mutual incoherence of N objective beams of light is ensured, and the reference beams are formed by mirror reflection of objective beams, which passed through a layer of registering medium.
EFFECT: simplified process of creating protective holograms used for marking products and increased quality of formed marking code images.
2 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
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|
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|
RU2707582C1 |
