Device for measuring fluorescence excited by light, and the...

G - Physics – 01 – N

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G01N 21/64 (2006.01) G01N 21/85 (2006.01)

Patent

CA 2288034

The invention relates to a device for measuring light-activated fluorescence of at least one coating that contains a fluorescent material, and its use for measuring fluid materials which cause fluorescence-quenching in at least one of the fluorescent coatings. To activate the fluorescence, at least one first light wave guide is directed onto at least one coating applied to a support and the fluorescent light is directed at a detector by means of at least one second light wave guide, in order to determine the intensity of the fluorescent light. The end faces of the different fluorescent light wave guides are then arranged, taking into account the numerical apertures of the different light wave guides and/or with reference to at least one coating containing a fluorescent material, in such a way that a local coordination of the measurable fluorescence intensity can be attained, and that the light source(s), light wave guides and the detector(s) are lodged in a measuring head.

L'invention concerne un dispositif destiné à la mesure de la fluorescence activée par la lumière sur au moins une couche renfermant une matière fluorescente, ainsi que son utilisation pour la mesure de substances fluides provoquant une extinction de la fluorescence dans au moins l'une des couches fluorescentes. Pour l'activation de la fluorescence, au moins un premier guide d'onde lumineuse est dirigée sur au moins une couche appliquée sur un support, et la lumière fluorescente est dirigée, au moyen d'au moins un deuxième guide d'onde lumineuse, vers un détecteur pour la détermination de l'intensité de la lumière fluorescente. Les faces avant des différents guides d'onde pour la lumière fluorescente sont alors agencées en tenant compte des ouvertures numériques de tous les guides d'onde et/ou en référence à au moins une couche renfermant une substance fluorescente, de telle façon qu'une coordination locale de l'intensité de fluorescence mesurable soit atteinte, et que la/ou les sources lumineuses, les guides d'onde et le/ou les détecteurs soient logés dans une tête de mesure.

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