Advanced optical document security element

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F12%3A00203807" target="_blank" >RIV/68407700:21340/12:00203807 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2006042" target="_blank" >http://dx.doi.org/10.1117/12.2006042</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2006042" target="_blank" >10.1117/12.2006042</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Advanced optical document security element

Popis výsledku v původním jazyce

Synthetic diffractive structures represent an important tool in the optical document security. Their macroscopic visual behavior is based on properties of a very fine micro-structure which cannot be copied using common copying techniques. The visual effects can be easily observed by a common observer without any special inspection tools. However, when a high level of security is needed, additional features are often included based on an optical encryption of information. In this paper, a novel encryption technique is presented, which is based on utilizing the plastic holographic foil as a waveguide and special diffractive structures as coupling elements. When an in-coupling area is illuminated with a defined light beam, the light is coupled into the waveguide and travels to an out-coupling part. The encrypted information is encoded either in the shape of the out-coupling area or it can be formed from an out-coupling hologram in free space above the element. Both laser and normal white

Název v anglickém jazyce

Advanced optical document security element

Popis výsledku anglicky

Synthetic diffractive structures represent an important tool in the optical document security. Their macroscopic visual behavior is based on properties of a very fine micro-structure which cannot be copied using common copying techniques. The visual effects can be easily observed by a common observer without any special inspection tools. However, when a high level of security is needed, additional features are often included based on an optical encryption of information. In this paper, a novel encryption technique is presented, which is based on utilizing the plastic holographic foil as a waveguide and special diffractive structures as coupling elements. When an in-coupling area is illuminated with a defined light beam, the light is coupled into the waveguide and travels to an out-coupling part. The encrypted information is encoded either in the shape of the out-coupling area or it can be formed from an out-coupling hologram in free space above the element. Both laser and normal white

Druh

D - Stať ve sborníku

CEP obor

BH - Optika, masery a lasery

OECD FORD obor

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Projekt

<a href="/cs/project/KAN401220801" target="_blank" >KAN401220801: Příprava nanostruktur a nanomaterialů s cíleným řízením rozměrů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

SPIE Proceedings Volume 8697

ISBN

978-0-9541146-4-0

ISSN

—

e-ISSN

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Počet stran výsledku

8

Strana od-do

"86970-M1"-"86970-M8"

Název nakladatele

SPIE

Místo vydání

Washington

Místo konání akce

Ostravice

Datum konání akce

3. 9. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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