Patents by Inventor Joannes P. M. Gieles

Joannes P. M. Gieles 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).

  • Coupling element with a lens for an optical transmission system
    Patent number: 4327963
    Abstract: A coupling element for an optical transmission system, in which the coupling element comprises a convex lens having a refractive index which is dependent on the radius r of a shell in the lens, and a holder. Use is preferably made of lenses having a refractive index N.sub.(r) =N.sub.1 .multidot.(2-(R/Ro).sup.2)1/2, where N.sub.1 is the refractive index of the core of an optical fiber (approximately 1.55) and Ro is the radius of the lens.The coupling of monomode fibers via lenses of this kind can be effected wth large dimensional tolerances.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: May 4, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Giok D. Khoe, Joannes P. M. Gieles, Gerard Kuyt