G - Physics – 07 – D
Patent
G - Physics
07
D
G07D 7/12 (2006.01) B42D 15/00 (2006.01) B42D 15/10 (2006.01)
Patent
CA 2677418
The invention relates to a safety and/or valuable document having a safety element, wherein the safety element has a photonic crystal arranged on a substrate in relation to an orientation defined on a surface of the substrate, and a luminescent substance. It is characterized in that an emission wavelength lambda of the luminescent substance, and a grid constant of the photonic crystal are aligned with each other and specified according to the formula lambda = m * 2 * d, wherein d is a distance between two lattice planes of the photonic crystal, and m is a positive integer.
L'invention concerne un document de sécurité et/ou de valeur comprenant un élément de sécurité qui contient un cristal photonique placé sur un substrat selon une orientation définie par rapport à une surface du substrat ainsi qu'une substance luminescente. L'invention est caractérisée en ce qu'une longueur d'onde d'émission lambda de la substance luminescente et une constante de réseau du cristal photonique sont ajustées l'une à l'autre selon la formule lambda = m * 2 * d et sont appliquées, d représentant une distance entre deux plans de réseau du cristal photonique et m étant un entier positif.
Muth Oliver
Pflughoefft Malte
Bundesdruckerei Gmbh
Marks & Clerk
LandOfFree
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