FIELD: protective devices.
SUBSTANCE: invention relates to protective devices, such as micro-optical strips. Protective device comprises one or more pictogram means; one or more pictogram refracting focusing elements; and sealing layer containing organic resin and metal nanoparticles. One or more means of refracting focusing elements of pictograms are located on top of one or more means of pictograms so that part of one or more refracting focusing elements of pictograms form a synthetic image of part of one or more pictogram means. One or more means of refracting focusing elements of pictograms is located in a layer separate from the sealing layer, and one or more means of refracting focusing elements of pictograms are in contact with sealing layer along non-planar boundary, wherein metal nanoparticles contained in the sealing layer are dispersed throughout the sealing layer and affect the geometry of the refracting focusing elements of the pictograms.
EFFECT: invention provides higher authenticity.
20 cl, 26 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| USING NANOPARTICLES TO ADJUST REFRACTIVE INDEX OF POLYMER MATRIX LAYERS TO OPTIMIZE MICROOPTICAL (MO) FOCUSING | 2020 |
|
RU2810915C2 |
| USING NANOPARTICLES TO ADJUST REFRACTIVE INDEX OF POLYMER MATRIX LAYERS TO OPTIMIZE MICROOPTICAL (MO) FOCUSING | 2020 |
|
RU2810914C2 |
| MICRO-OPTICAL PROTECTIVE DEVICE WITH ABSOLUTE ALIGNMENT | 2020 |
|
RU2817288C2 |
| MICRO-OPTICAL PROTECTIVE DEVICE WITH LAYERS OF PHASE-SYNCHRONIZED IMAGES | 2020 |
|
RU2818676C1 |
| MICRO-OPTICAL SECURITY ELEMENT WITH COLOUR ZONES | 2020 |
|
RU2824320C2 |
| OPTICAL SECURITY DEVICE | 2014 |
|
RU2673137C9 |
| FULLY MICRO-OPTICAL PROTECTED DOCUMENT | 2019 |
|
RU2790220C2 |
| IMPROVED POLYMER SHEET MATERIAL FOR USE IN MAKING POLYMER PROTECTED DOCUMENTS, SUCH AS BANKNOTES | 2015 |
|
RU2689041C2 |
| IMAGE REPRODUCING SYSTEM AND MICROOPTIC SECURITY SYSTEM | 2007 |
|
RU2478998C9 |
| PROTECTIVE DEVICE WITH OPTICAL INDICATION OF UNAUTHORISED TEMPERING | 2010 |
|
RU2541433C9 |
