Commissariat a L'energie Atomique Et Aux Energies Alternatives

Horiba Abx Sas

Iprasense Sas

Centre National De La Recherche Scientifique

Sorbonne Université

Etat Français Représenté Par Le Ministère De La Défense

Anais Ali Cherif

Cedric Allier

Lionel Herve

Jean-Louis Viovy

Laurent Malaquin

Cédric Allier

Pierre Blandin

Damien Isebe

Stephanie Descroix

Stefano Begolo

Geoffrey Esteban

A method for holographic characterization of a particle contained in a sample, based on an image, or hologram, of the sample obtained by an image sensor when the sample is illuminated by a light source. The hologram is the subject of a holographic reconstruction, to obtain a reference complex image, representative of the light wave transmitted by the sample in a reconstruction plane. A holographic propagation operator is applied to the reference complex image, to obtain a plurality of secondary complex images, from which a profile is determined describing the change in an optical feature of the light wave transmuted by the sample along the axis of propagation of the light wave.

Holographic method for characterizing a particle in a sample

A method for identifying a particle contained in a sample, including illuminating the sample using a light source, the light source producing an incident light wave propagating toward the sample, then acquiring, using a matrix-array photodetector, an image of the sample, the sample being placed between the light source and the photodetector such that the matrix-array photodetector is exposed to a light wave that is the result of interference between the incident light wave and a diffraction wave produced by each particle. The method further includes applying a numerical reconstruction algorithm to the image acquired by the photodetector, to estimate a characteristic quantity of the light wave reaching the detector, at a plurality of distances from the detector. The variation in the characteristic quantity as a function of distance allows the particle to be identified.

Method for identifying blood particles using a photodetector

Growing community of inventors

Montpellier, France

Anais Ali Cherif