Device for detection of fluorescent species

G - Physics – 01 – N

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G01N 21/64 (2006.01)

Patent

CA 2337233

A device for detection of one or several fluorescent species, said species being contained in a medium, said medium being contained in a conduit, said device comprising a means of exciting the fluorescent species by light, said medium and conduit making up a structure that is transparent to the exciting and the emitted fluorescent light, and said device comprising one or several such structures, may be improved by letting at least part of the emitted fluorescent light be guided away from the illumination zone by total internal reflection (TIR) in said structure and collected from one end of said structure.

La présente invention concerne un perfectionnement pouvant être apporté à un dispositif de détection d'une ou plusieurs espèces fluorescentes. En l'occurrence, les espèces sont contenues dans un milieu renfermé dans un conduit. Le dispositif comprend un organe permettant d'exciter par de la lumière les espèces fluorescentes. Le milieu et le conduit forment une structure qui est transparente à la lumière d'excitation et à la lumière de fluorescence émise, le dispositif comportant une ou plusieurs de telles structures. Le perfectionnement consiste en la possibilité d'amener dans la structure considérée une partie au moins de la lumière de fluorescence émise depuis la zone d'éclairage par un procédé de réflexion interne totale, et de récupérer cette lumière par l'une des extrémités de la structure considérée.

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