Patents by Inventor Gerard Villela

Gerard Villela has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Multidielectric mirror for carbon dioxide laser providing the mid infrared, in high reflectance with good protection against mechanical attack
    Patent number: 4840442
    Abstract: A multidielectric mirror, in particular for the mid infrared, in which the last optical layer of a multidielectric stack is constituted by a composite layer including a thin protective surface layer of a material of amorphous structure together with a high index and very low absorption dielectric layer, with the thicknesses of these two layers being designed to obtain maximum reflectance given the indices of these materials. The protective layer is preferably made of amorphous hydrogenated silicon. The invention is applicable, in particular, to making carbon dioxide power lasers.
    Type: Grant
    Filed: October 26, 1987
    Date of Patent: June 20, 1989
    Assignee: Compagnie Generale D'Electricite
    Inventors: Jacques Mouchart, Gerard Villela, Franck Dutois, Bernard Pointu