FIELD: physics.
SUBSTANCE: protective element has at least one microstructure whose outer appearance depends on the viewing angle during inside light inspection. At least one microstructure is formed by a plurality of structural elements with characteristic mesh width of 1 mcm or higher. The see-through protective element has total thickness of 50 mcm or less. Said structural elements are partially coated with an opaque, transparent, semi-transparent, reflecting or absorbing coating.
EFFECT: high degree of protection from forgery with easy authentication via inside light inspection.
45 cl, 18 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DATA CARRIER HAVING WINDOW | 2010 |
|
RU2499674C1 |
| PROTECTIVE ELEMENT AND METHOD OF ITS PRODUCTION | 2006 |
|
RU2395400C2 |
| PROTECTIVE ELEMENT WITH ACHROMATIC CHARACTERISTICS | 2011 |
|
RU2591770C2 |
| PROTECTIVE ELEMENT AND METHOD OF ITS MANUFACTURING | 2009 |
|
RU2483934C2 |
| SECURITY ELEMENT HAVING PATTERNED REGION WITH VARIABLE OPTICAL PROPERTIES | 2009 |
|
RU2527184C2 |
| MAKING OF MICROSTRUCTURE ON SUBSTRATE | 2011 |
|
RU2555663C2 |
| PROTECTIVE ELEMENT AND METHOD OF MAKING PROTECTIVE ELEMENT | 2011 |
|
RU2596447C2 |
| PROTECTION ELEMENT FOR PROTECTED DOCUMENT AND METHOD OF ITS FABRICATION | 2008 |
|
RU2422572C2 |
| MULTILAYER BODY AND METHOD OF MAKING MULTILAYER BODY | 2006 |
|
RU2390808C2 |
| PROTECTIVE ELEMENT | 2007 |
|
RU2419551C2 |
