FIELD: measurement technology.
SUBSTANCE: polymeric film authentification method includes the stage, when the birefringence of the layer inside this film is measured, the birefringence value obtained at the measurement stage is compared with the preset birefringence value indicating the film recognised as authentic, to determine, whether the specified film is authentic or not, on the basis of the named comparison.
EFFECT: possibility of film protection without making any changes in it.
20 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF AUTHENTICATING POLYMER FILM | 2009 |
|
RU2479827C2 |
| OPTICAL STORAGE MEDIA AND METHOD OF THEIR PRODUCTION | 2007 |
|
RU2473979C2 |
| LIQUID CRYSTAL DISPLAY | 2008 |
|
RU2444034C1 |
| METHOD FOR MANUFACTURING A PROTECTED ARTICLE, PROTECTED ARTICLE AND METHODS FOR MANUFACTURING MULTIPLE DIFFERENT TYPES OF PROTECTED ARTICLES | 2019 |
|
RU2785049C1 |
| APPARATUS FOR RECORDING CONFIDENTIAL INFORMATION | 2006 |
|
RU2417440C2 |
| PROCESS OF PRODUCTION OF POLYMER PROTECTED PRODUCTS | 2019 |
|
RU2785837C1 |
| LIQUID CRYSTAL DISPLAY | 2010 |
|
RU2450295C1 |
| METHOD OF MODIFYING CHIRAL LIQUID-CRYSTAL FILMS USING EXTRACTING AGENTS | 2004 |
|
RU2367677C2 |
| LIQUID CRYSTAL IMAGE FORMING APPARATUS | 2011 |
|
RU2460107C1 |
| LIQUID CRYSTAL IMAGE FORMING APPARATUS | 2009 |
|
RU2445664C1 |
