FIELD: physics.
SUBSTANCE: method involves making protective element consisting of several layers and has a reflecting layer which enables change of colour in a defined range of the spectrum of reflected light depending on its angle of incidence or viewing angle, and on the other side the protective element also consists of several layers and has polarised latent image which can be viewed using polarisation filters.
EFFECT: more reliable protection from forgery and authentication of protected objects.
37 cl
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2483934C2 |
| PROTECTIVE ELEMENT WITH EFFECT OF COLOR CHANGE AND METHOD OF ITS PRODUCTION AND USE | 2012 |
|
RU2600088C2 |
| SCALE FOR USE IN CONCEALED PROTECTION | 2009 |
|
RU2523474C2 |
| SCALE FOR USE IN CONCEALED PROTECTION | 2004 |
|
RU2458093C2 |
| GONIOLUMINISCENT PROTECTIVE ELEMENT AND METHOD OF ITS PRODUCTION | 2009 |
|
RU2493969C2 |
| FLAKE FOR APPLICATION IN HIDDEN PROTECTION | 2004 |
|
RU2381246C2 |
| MULTILAYER PROTECTIVE OPTICAL DIFFRACTION-POLARIZATION DEVICE, A METHOD FOR MANUFACTURING THE SPECIFIED DEVICE, A PROTECTED PRODUCT CONTAINING THE SPECIFIED MULTILAYER PROTECTIVE OPTICAL DIFFRACTION-POLARIZATION DEVICE | 2021 |
|
RU2763388C1 |
| OPTICAL PROTECTIVE DEVICE (VERSIONS), METHOD OF MANUFACTURING OF THE SPECIFIED DEVICE AND METHOD OF VERIFICATION OF THE PROTECTED OBJECT CONTAINING THE SPECIFIED OPTICAL PROTECTIVE DEVICE | 2019 |
|
RU2725667C1 |
| PROTECTIVE ELEMENT WITH THIN-LAYER ELEMENT | 2004 |
|
RU2344048C2 |
| MULTILAYER PROTECTIVE ELEMENT AND METHOD OF ITS OBTAINING | 2016 |
|
RU2642535C1 |
