Patents by Inventor Franziska L. Lorey

Franziska L. Lorey 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).

  • Methods and apparatus for detecting core/cladding interfaces in optical waveguide blanks
    Patent number: 6025906
    Abstract: Methods and apparatus for detecting air/cladding and core/cladding interfaces of blanks (13) used to produce optical waveguide fibers are provided. A beam of coherent light (30) is scanning across the blank (13) and spatial light intensity patterns produced thereby (FIG. 5) are detected and analyzed. Air/cladding interfaces correspond to a decrease in the width of a unimodal spatial light intensity pattern as the beam moves towards the center of the blank (FIGS. 5A and 5B). Core/cladding interfaces correspond to the onset of an at least bimodal spatial light intensity pattern as the beam moves towards the center of the blank (FIGS. 5D and 5E). By rotating the blank and repeating the measurement process at two or more angular positions, concentricity and ellipticity values for a blank can be determined.
    Type: Grant
    Filed: September 17, 1998
    Date of Patent: February 15, 2000
    Assignee: Corning Incorporated
    Inventors: Jerry L. Hepburn, Franziska L. Lorey, David A. Pastel, Robert S. Wagner