Bernard Kress

Didier Lefevre

It includes a measuring space (8) comprising a constrained passage (15) for the fluid, a monochromatic light source (31) delivering a beam (F1) to optical elements (6, 32, 34) including a first diffractive optical element (32) having a diffractive network (38) predetermined as a function, on the one hand, of the characteristics of the source and, on the other hand, of chosen geometrical and spectral characteristics for the illumination of the constrained passage, and suitable for inducing fluorescence of at least part of the fluid, and first (19-20), second (34-36) and third (40) optoelectronic elements intended to collect, respectively, a transmitted beam, fluorescence and a diffracted beam, and suitable for delivering to an analysis unit (24) signals relating to the contents of the beams. At least one of the beams emanates from a second diffractive optical element (42) having a second diffractive optical network which is predetermined as a function of a frequential and geometrical transfer function of at least one of the optoelectronic elements.

Growing community of inventors

Strasbourg, France

Bernard Kress