OPTICAL-EFFECT-PRODUCING MEDIUM, USE THEREOF AND OBJECT HAVING AN OPTICALLY RESPONSIVE FEATURE PRODUCED USING SAID OPTICAL-EFFECT-PRODUCING MEDIUM

There is described an optical-effect-producing medium comprising a carrier medium (1 ) containing or comprising pigment particles (10) having at least one optically responsive pigment or dye (100) that responds to incident electromagnetic radiation of at least a selected excitation wavelength or wav...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	DOWNING, ELIZABETH, A, SHERIDON, NICHOLAS, K
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES BOOK COVERS BOOKBINDING CHECKING-DEVICES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DYES FILES FILLING PASTES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING INKS LOOSE LEAVES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS MOVABLE-STRIP WRITING OR READING APPARATUS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS PHYSICS POLISHES PREPARATION OF CARBON BLACK PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR SPECIAL PRINTED MATTER TRANSPORTING TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS,TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES USE OF MATERIALS THEREFOR WOODSTAINS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	There is described an optical-effect-producing medium comprising a carrier medium (1 ) containing or comprising pigment particles (10) having at least one optically responsive pigment or dye (100) that responds to incident electromagnetic radiation of at least a selected excitation wavelength or wavelength band (??X) by producing an optical response in the visible or near- visible spectrum. A refractive index (n1 ) of the carrier medium (1 ) and a refractive index (n2; n3) of the pigment particles (10) are selected to maximise the amount of incident electromagnetic radiation reaching the said at least one optically responsive pigment or dye (100). Also described is the use of such optical-effect-producing medium to produce an optically responsive feature, especially for security, authentication and/or identification purposes, as well as objects comprising such an optically responsive feature. L'invention porte sur un milieu produisant un effet optique, lequel milieu comprend un milieu porteur (1) contenant ou comprenant des particules de pigments (10) ayant au moins un pigment ou un colorant réagissant optiquement (100) qui réagit à un rayonnement électromagnétique incident d'au moins une longueur d'onde ou une bande de longueur d'onde d'excitation sélectionnée (??X) par génération d'une réponse optique dans le spectre visible ou proche du spectre visible. Un indice de réfraction (n1) du milieu porteur (1) et un indice de réfraction (n2 ; n3) des particules de pigments (10) sont sélectionnés de façon à maximiser la quantité de rayonnement électromagnétique incident atteignant ledit ou lesdits pigments ou colorants réagissant optiquement (100). L'invention porte également sur l'utilisation d'un tel milieu produisant un effet optique pour produire un élément réagissant optiquement, spécialement à des fins de sécurité, d'authentification et/ou d'identification, ainsi que sur des objets comprenant un tel élément réagissant optiquement.