Patents by Inventor Francois E. Auzel

Francois E. Auzel 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).

  • Method of casting fluorescent lenses
    Patent number: 3958970
    Abstract: Fluorescent material for the optical frequency conversion of near infrared radiation from 0.85 to 1.06 .mu.m into visible radiation. The constituents of the material are (i) vitrifying fluorides of lead, beryllium and magnesium, (ii) devitrifying and activating fluoride of ytterbium and (iii) doping fluoride of erbium for a green and red response and doping fluoride of thulium for a blue response. The content of ytterbium fluoride controls the form of the material, either glassy ceramic or polycristalline. Proper preparation conditions allow to prepare either a glass material or a ceramic material.
    Type: Grant
    Filed: March 29, 1974
    Date of Patent: May 25, 1976
    Inventor: Francois E. Auzel