Procédé et dispositif pour la détection et l'identification instantanées d'une entité

• Main Authors: FACHINGER CLAUDE, NAFFRECHOUX EMMANUEL, MARTIN-BOUYER MICHEL, SUPTIL JOEL
• Format: Patent
• Language: French
• Published: 09.06.1995
• Edition: 5
• Subjects: COLORIMETRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PHYSICS; RADIATION PYROMETRY; TESTING

PCT No. PCT/FR94/00478 Sec. 371 Date Dec. 22, 1994 Sec. 102(e) Date Dec. 22, 1994 PCT Filed Apr. 27, 1994 PCT Pub. No. WO94/25837 PCT Pub. Date Nov. 10, 1994.This integrated device for instantaneously carrying out qualitative and quantitative identification of one or more physicochemical entities contained in or on a sample and capable of producing one or more emission or absorption or reflection spectra under excitation by an electromagnetic wave comprises, within a shielded casing (1): a polychromator (5) to which the emission, absorption or reflection spectrum or spectra of the analyzed sample is or are conveyed, an element (6) for detecting said signals, which is positioned on the optical path of the signals output by the polychromator (5), a conversion circuit (6), coupled with said polychromator (5), a central processing unit (7) incorporating, in an associated memory, a plurality of standard spectra representative of known and predetermined entities and intended to analyze the digital spectrum or spectra thus obtained and to compare, after decorrelation, this spectrum or these spectra with the spectra stored in said memory, and to deduce from this comparison the nature and the concentration of the predetermined physicochemical entity or entities in or on the sample.