Mauna Kea Technologies

Stéphane Bourriaux

Bertrand Viellerobe

Magalie Genet

Francois Lacombe

Aymeric Perchant

François Lacombe

Alexandre Loiseau

Frederic Berier

Sandra Marti

Frédéric Berier

Georges Le Goualher

Benjamin Abrat

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

An optical head for equipping the distal end of a flexible optical fiber bundle, designed to be urged into contact with an analyzing surface and including optical elements for focusing an excitation signal into a so-called excitation focal point located at a specific depth beneath the analyzing surface and for sampling a signal backscattered by the excitation focal point which is carried back by the fiber bundle. The head includes an optics-holder tube wherein are inserted on one side the distal end portion of the fiber bundle and on the other optical elements, the latter including a plate placed in contact with the end of the fiber bundle whereof the index is close to that of the fiber core and a focusing optical block, an output window being further provided adapted to provide index adaptation so as to eliminate parasitic reflection occurring on the analyzing surface.

Miniaturized focusing optical head in particular for endoscope

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Champs sur Marne, France

Stéphane Bourriaux