Phosphorescent compositions and methods for identification...

G - Physics – 01 – V

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G01V 8/10 (2006.01) B44F 1/12 (2006.01) C09K 11/55 (2006.01) C09K 11/64 (2006.01) G01S 17/74 (2006.01) G09F 3/00 (2006.01) G01N 21/64 (2006.01)

Patent

CA 2663425

Disclosed are methods of identification or detection utilizing photoluminescent compositions containing photoluminescent phosphorescent materials and photoluminesce fluorescent materials whose emission signature lies partly or fully in the infrared region of the electromagnetic spectrum onto or into objects for the purpose of identifying or detecting the objects. Also disclosed are methods of identification or detection utilizing photoluminescent compositions which are high in intensity and high in persistence, methods wherein the identifying markings can be clandestine or otherwise, and methods wherein activation and detection can be decoupled spatially and temporally. Objects containing these photoluminescent compositions are also disclosed.

L'invention concerne des procédés d'identification ou de détection utilisant des compositions photoluminescentes contenant des matériaux phosphorescents photoluminescents et des matériaux fluorescents photoluminescents dont la signature d'émission se trouve partiellement ou entièrement dans la région infrarouge du spectre électromagnétique sur ou dans des objets dans le but d'identifier ou de détecter les objets. L'invention concerne également des procédés d'identification ou de détection utilisant des compositions photoluminescentes qui ont une intensité élevée et une persistance élevée, des procédés dans lesquels les marquages d'identification peuvent être clandestins ou autres et des procédés dans lesquels l'activation et la détection peuvent être découplées dans l'espace et dans le temps. L'invention concerne également des objets contenant ces compositions photoluminescentes.

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