FIELD: optics.
SUBSTANCE: present invention relates to a thin optical protective element containing a reflecting or refractive light-redirecting surface, the relief pattern whereof is capable of redirecting incident light from a light source and forming a projected image on the projection surface, wherein the projected image comprises a caustic pattern reproducing a reference image easily visually recognisable by a person. The present invention also relates to a method for manufacturing a relief pattern of the light-redirecting surface of the thin optical protective element.
EFFECT: creation of a thin optical protective element with a light-redirecting surface.
13 cl, 6 dwg
| Title |
Year |
Author |
Number |
| OPTICAL PROTECTIVE ELEMENT |
2018 |
- Callegari, Andrea
- Degott, Pierre
- Dinoev, Todor
- Garnier, Christophe
- Mayer, Alain
- Schwartzburg, Yuliy
- Testuz, Romain
- Pauly, Mark
|
RU2762524C2 |
| METHOD OF MANUFACTURING LIGHT REDIRECTING SURFACE OF CAUSTIC LAYER, OPTICAL PROTECTIVE ELEMENT CONTAINING MANUFACTURED LIGHT REDIRECTING SURFACE OF CAUSTIC LAYER, MARKED OBJECT, APPLICATION AND METHOD OF OBJECT AUTHENTICATION |
2019 |
- Callegari, Andrea
- Gillieron, Mathieu
- De Feo, Oscar
|
RU2794281C2 |
| SINGLE-LAYER FILM FOR IMAGE PROJECTION |
2015 |
- Kape Samuel M.
- Steenblik Richard A.
- Dzhordan Gregori R.
|
RU2702946C1 |
| SYSTEM OF EXTERNAL LIGHTING FOR DISPLAY DEVICE |
2007 |
- Krejn Marsellinus P. K. M.
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- Khogenstraten Villem F. J.
|
RU2444153C2 |
| PROTECTIVE ELEMENT AND METHOD OF ITS PRODUCTION |
2006 |
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- Khajm Manfred
- Dikhtl' Marius
- Khoffmjuller Vinfrid
|
RU2395400C2 |
| LENS-BITMAP SHEET, OBJECT USING SAID SHEET, SINGLE FORM AND SET OF FORMS FOR MANUFACTURING SAID SHEET AND METHOD FOR MANUFACTURING SAID SHEET |
1998 |
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|
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| PROTECTIVE ELEMENT WITH OPTICALLY VARIABLE SURFACE PATTERN |
2011 |
|
RU2591089C2 |
| SEE-THROUGH PROTECTIVE ELEMENT HAVING MICROSTRUCTURES |
2007 |
- Khajm Manfred
- Dikhtl' Marius
- Ram Mikhel'
|
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| EMBOSSED SURFACE MICROSTRUCTURES, DEVICES AND METHOD FOR THEIR MAKING |
2010 |
- Mokhammed Ibn-Ehl'Khadzh
- Zhjul'En Martts
- Khubert Zajberle
- Vol'Fgang Vernet
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1996 |
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