Patent ID: 7623285
Filing Date: 2009-11-24
Classification: G01B,G01N,G03H

Abstract:
1. A method of acousto-optical imaging of an object to be imaged comprising the steps: (a) generating an incident optical wave, of frequency f (b) vibrating in a first object direction and at an acoustic frequency f (c) applying said incident wave to the object to be imaged, and thus generating a scattered signal wave, (d) applying at least a part of the scattered signal wave to a detection device, (e) applying the reference wave to the detection device without making it pass through the object to be imaged, thereby generating at the point r of the detection device an interferogram I(r, t) varying over time t, (f) extracting a digital information item from the interferogram I(r, t), (g) obtaining the coordinates of the focal point of the object to be imaged, to which the digital information item relates, and (e) repeating steps (a) to (g) for various focal points of the acoustic wave in the object to be imaged, these various focal points being aligned along the first object direction.