The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 24, 1998
Filed:
May. 24, 1996
Didier Lefevre, Saint Clement De Riviere, FR;
Bernard Kress, Strasbourg, FR;
A B X, Montpellier, FR;
Abstract
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.