Optical security elements based on waveguide effects
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F15%3A00444540" target="_blank" >RIV/61389021:_____/15:00444540 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21340/15:00309265
Result on the web
<a href="http://dx.doi.org/10.1117/12.2175918" target="_blank" >http://dx.doi.org/10.1117/12.2175918</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2175918" target="_blank" >10.1117/12.2175918</a>
Alternative languages
Result language
angličtina
Original language name
Optical security elements based on waveguide effects
Original language description
Optical document security represents an important field of application of analogue and synthetic diffractive structures.Most of the security elements are based on visual effects formed by diffraction on a structure with the details in the order of hundreds of nanometers.However,to improve the anti-counterfeiting properties of these structures, various types of hidden features are included within the area of the security elements.They are not visible under normal lighting but it is possible to easily reveal the hidden information under specially-defined geometry and/or type of illumination.In this paper, theory and application of a novel type of hidden diffractive security element are presented.It combines standard visual properties of synthetic holograms with waveguide effects.The hidden information is recorded using a special grating,which is not visible under normal observation geometry.The encoded image can be reconstructed only when the proper guided mode appears in a substrate.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JA - Electronics and optoelectronics
OECD FORD branch
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Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of SPIE Vol. 9442: Optics and Measurement Conference 2014
ISBN
978-1-62841-557-5
ISSN
0277-786X
e-ISSN
—
Number of pages
11
Pages from-to
944214-944214
Publisher name
SPIE-INT SOC OPTICAL ENGINEERING
Place of publication
Bellingham
Event location
Liberec
Event date
Oct 7, 2014
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000349403500039