Patents by Inventor Olivier Belle

Olivier Belle 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 and apparatus for determining the color of an object that is transparent, diffusing, and absorbent, such as a tooth, in particular
    Patent number: 5428450
    Abstract: A method and apparatus for determining the color of an object which is transparent, diffusing, and absorbent, by illuminating an area of the object by means of a diffuse light flux that is substantially uniform and isotropic, by picking up the light backscattered by a small fraction of the illuminated area of the object by means of an optical system that comprises achromatic doublets and both infrared and ultraviolet filters, together with a diaphragm, and spectrally analyzing said light by means of interference filters and photodetectors. The invention is particularly suitable for determining the color of teeth in the mouth.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: June 27, 1995
    Assignee: Bertin & Cie
    Inventors: Michel Vieillefosse, Olivier Belle