METHOD AND SYSTEMS FOR THE NON-INVASIVE OPTICAL CHARACTERIZATION OF A HETEROGENEOUS MEDIUM

• Main Authors: AUBRY, Alexandre, BAROLLE, Victor, COBUS, Laura, LAMBERT, William, BADON, Amaury, BOCCARA, Claude, FINK, Mathias
• Format: Patent
• Language: English; French; German
• Published: 29.11.2023
• Subjects: ACOUSTICS; HARMONIUMS OR LIKE WIND-ACTUATED MUSICAL INSTRUMENTS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MUSICAL INSTRUMENTS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANS; PHYSICS; TESTING

The present invention relates to a method for the non-invasive optical characterization of a heterogeneous medium, comprising: a step of illuminating, by means of a series of incident light waves, a given field of view of the heterogeneous medium, positioned in a focal plane of a microscope objective (30); a step of determining a first distortion matrix (Dur, Drr) in an observation basis defined between a conjugate plane of the focal plane (FP) and an observation plane, said first distortion matrix corresponding, in a correction basis defined between a conjugate plane of the focal plane and an aberration correction plane, to the term-by-term matrix product of a first reflection matrix (Rur) of the field of view, determined in the correction basis, with the phase conjugate matrix of a reference reflection matrix, defined for a model medium, in said correction basis; and a step of determining, from the first distortion matrix, at least one mapping of a physical parameter of the heterogeneous medium.