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1. (WO1989000278) IMAGING PROCESS AND SYSTEM FOR TRANSILLUMINATION WITH PHOTON FREQUENCY MARKING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1989/000278 International Application No.: PCT/FR1988/000356
Publication Date: 12.01.1989 International Filing Date: 01.07.1988
Chapter 2 Demand Filed: 16.02.1989
IPC:
G01N 21/47 (2006.01) ,G01N 21/59 (2006.01) ,G01J 9/04 (2006.01)
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
59
Transmissivity
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
9
Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
04
by beating two waves of the same source but of different frequency and measuring the phase shift of the lower frequency obtained
Applicants:
GENERAL ELECTRIC CGR S.A. [FR/FR]; 100 rue Camille Desmoulins F-92130 Issy les Moulineaux, FR (AllExceptUS)
DOLFI, Daniel [FR/FR]; FR (UsOnly)
MICHERON, François [FR/FR]; FR (UsOnly)
Inventors:
DOLFI, Daniel; FR
MICHERON, François; FR
Agent:
SCHMIT, Christian; Cabinet Ballot-Schmit 84, avenue Kléber F-75116 Paris, FR
Priority Data:
87/0946103.07.1987FR
Title (EN) IMAGING PROCESS AND SYSTEM FOR TRANSILLUMINATION WITH PHOTON FREQUENCY MARKING
(FR) PROCEDE ET SYSTEME D'IMAGERIE PAR TRANSILLUMINATION A MARQUAGE EN FREQUENCE DES PHOTONS
Abstract:
(EN) In an imaging process and system by transillumination of a medium (H) illuminated by transparency by a beam (F1), an acoustic transducer (TA1) emits an acoustic wave in the medium (H) which interferes with the beam (F1). The frequency of the light passing through the medium (H) is then shifted from the value of the frequency of the acoustic wave. A collimating device (A) whose object focus is located at the intersection of the acoustic wave and the light beam (F1) collects the light diffused by the medium (H). Application: medical imaging.
(FR) Procédé et système d'imagerie par transillumination d'un milieu (H) éclairé par transparence par un faisceau (F1). Un transducteur acoustique (TA1) émet dans le milieu (H) une onde acoustique qui interfère avec le faisceau (F1). La lumière traversant le milieu (H) a alors sa fréquence déplacée de la valeur de la fréquence de l'onde acoustique. Un dispositif de collimation (A), dont le foyer objet est placé à l'intersection de l'onde acoustique et du faisceau lumineux (F1), collecte la lumière diffusée par le milieu (H). Application: imagerie médicale.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, FR, GB, IT, LU, NL, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP0377571US5174298FR2617602