DISPOSITIF OPTIQUE DE DETECTION DE CARACTERISTIQUES DE PARTICULES EN MOUVEMENT

PCT No. PCT/FR96/00048 Sec. 371 Date Jun. 10, 1998 Sec. 102(e) Date Jun. 10, 1998 PCT Filed Jan. 11, 1996 PCT Pub. No. WO97/25607 PCT Pub. Date Jul. 17, 1997The device uses the principle of the Doppler effect laser velocimeter. It comprises emitter and receiver optic guides formed by integrated opti...

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Hauptverfasser:	SCHANEN ISABELLE E, CARTELIER ALAIN, BENECH PIERRE
Format:	Patent
Sprache:	fre
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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Zusammenfassung:	PCT No. PCT/FR96/00048 Sec. 371 Date Jun. 10, 1998 Sec. 102(e) Date Jun. 10, 1998 PCT Filed Jan. 11, 1996 PCT Pub. No. WO97/25607 PCT Pub. Date Jul. 17, 1997The device uses the principle of the Doppler effect laser velocimeter. It comprises emitter and receiver optic guides formed by integrated optics techniques on a single substrate, preferably made of glass. The emitter guides, connected to a light source, produce two mutually coherent beams inclined with respect to one another in such a way as to constitute interference fringes in a measuring volume situated outside the substrate. The receiver guides transmit the light diffused by the passage of particles in movement through the measuring volume to a detection and processing circuit. The substrate is mounted in a support fixed in an orifice of a wall along which a fluid flows transporting the particles to be examined. The substrate comprises a face which comes into contact with the fluid. This device enables the velocity, size and/or number of particles in movement in a fluid moving along a wall to be determined.