Keranova

Centre National De La Recherche Scientifique

Université Jean Monnet Saint-Étienne

Ecole Centrale De Lyon

Manutech-Usd

Ecole Nationale D'ingenieurs De Saint-Etienne

Emmanuel Baubeau

Aurelien Bernard

Fabrizio Romano

Cyril Mauclair

Philippe Bertrand

Florent Missemer

Sylvie Nadolny

Aurélien Bernard

The present invention relates to a cutting device comprising: a laser source () for emitting an initial laser beam () in the form of pulses, a shaping system () positioned downstream of the femtosecond laser (), for transforming the initial laser beam () into a single phase-modulated laser beam, an optical coupler () between the laser source () and the shaping system (), the optical coupler () including an optical fibre (), remarkable in that the cutting device further comprises a polarisation corrector () for modifying the polarisation of the initial laser beam () at an input end of the optical coupler () such that the polarisation of the laser beam at an output end of the optical coupler () corresponds to a desired reference polarisation.

Cutting device with optical coupler including a polarisation corrector

The invention concerns a method for determining a minimum value of L.A.S.E.R. energy necessary to form, by using a LASER source, a gas bubble in an ocular tissue, the method comprising:

Method and device for determining a minimum value of laser energy necessary for the formation of a gas bubble

The present invention relates to apparatus for cutting out a human or animal tissue, such as a cornea, or a lens, said apparatus including a treatment device for producing a pattern consisting of at least two impact points in a focusing plane from a L.A.S.E.R. beam generated by a femtosecond laser (), the treatment device being positioned downstream from said femtosecond laser, remarkable in that the treatment device comprises an optical focusing system () for focusing the L.A.S.E.R. beam in a cutting-out plane, and a control unit () able to control the displacement of the optical focusing system along an optical path of the L.A.S.E.R. beam for displacing the focusing plane in at least three respective cutting-out planes so as to form a stack of surfaces for cutting out the tissue.

Optical focusing system of an apparatus for cutting-out a human or animal tissue

The invention relates to a treatment apparatus including a device for conditioning a LASER beam generated by a femtosecond laser, the conditioning device comprising an optical sweeping scanner () and a focusing optical system () downstream of the optical sweeping scanner (), remarkable in that a pivoting mirror () of the optical sweeping scanner () is positioned between an object focal plane Fof the focusing optical system () and the focusing system ().

Apparatus for treating a tissue, including original optical systems of deflection and focusing of a laser beam

The present invention relates to an apparatus for cutting-out including a device for treating a L.A.S.E.R. beam generated by a femtosecond laser (), and positioned downstream from said femtosecond laser, the treatment device comprising:

Sweeping optical scanner of an apparatus for cutting-out a human or animal tissue

A system of additive-manufacturing by laser melting of a powder bed. The system includes a first laser unit selectively emitting a first laser beam to form at least one layer of material by melting the powder bed; a second laser unit selectively emitting a second laser beam to machine at least a portion of the layer of material; and an optical unit enabling to focus the first laser beam on the powder bed to be melted and the second laser beam on the layer of material to be machined. The system is able to produce a part by successive stacking of melted then machined layers of material. A process of additive-manufacturing by laser melting of a powder bed is also contemplated.

Growing community of inventors

Saint Etienne, France

Emmanuel Baubeau