Mauna Kea Technologies

Georges Le Goualher

Aymeric Perchant

Nicholas Ayache

Francois Lacombe

Bertrand Viellerobe

Magalie Genet

François Lacombe

Frederic Berier

Frédéric Berier

Sandra Marti

Stéphane Bourriaux

The invention relates to a method for measuring the speed of a particle such as a red blood cell moving inside a flow such as a flow of the blood, using a light scanning microscope. The inventive method comprises the following steps: acquisition of an image by x and y light scanning on a plane containing the object; detection on the plane (x, y) of a mark on the plane (x, y); estimation of the speed vof the object from the gradient thus determined.

Method and system for measuring the speed of blood flow

A method for processing an image acquired through a guide consisting of a plurality of optical fibers includes, for each optical fiber, isolating on the acquired image a zone corresponding to the optical fiber, locally processing each zone individually to correct the photon flux detected in each optical fiber, then reconstructing the acquired image by eliminating the pattern caused by the optical fiber. The method also includes a sampling process for obtaining, for each optical fiber and from a sampling image, a sample injection rate which can be used for reconstructing the acquired images. The method also includes a prior step which consists in detecting the fibers from a target.

Method for processing an image acquired through a guide consisting of a plurality of optical fibers

Equipment includes an image guide () consisting of flexible optical fibers with: on the proximal end side: a source (), angular scanning elements (), injection elements () in one of the fibers, elements for splitting () the illuminating beam and the backscattered signal, elements for spatial filtering (), elements for detecting () the signal, electronic elements () for controlling, analyzing and digital processing of the detected signal and display; and on the distal end side: an optical head () for focusing the illuminating beam exiting from the illuminated fiber. The scanning elements include a resonant line mirror (M) and a galvanometric field mirror (M) with a variable frequency and two afocal optical systems adapted to conjugate the two mirrors (M, M) firstly in the field mirror (M) and the injection elements () in the image guide in a second step.

Confocal imaging equipment in particular for endoscope

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La Meziere, France

Georges Le Goualher