METHOD, DEVICE AND SYSTEM FOR DETECTING RAMAN SCATTERED LIGHT

The invention relates to a method for detecting Raman scattered light using at least one interference filter and a detection unit (30), said Raman scattered light to be detected comprising an incoming scattered light signal (10), wherein the method comprises the following steps: * a first filtered scattered light signal (40) is generated by the application of a first transmission function to the incoming scattered light signal (10), said first transmission function being assigned to a first optical path length L1 through a first interference filter (20), and said first transmission function defining a first spectral band delta lambda 1; * a second filtered scattered light signal (40) is generated by the application of a second transmission function to the incoming scattered light signal (10), said second transmission function being assigned to a second optical path length L2 being not equal to L1 through the first interference filter (20) or through a second interference filter, and second transmission functi