Patents by Inventor Detlev Lohmuller

Detlev Lohmuller 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 and device for aligning an optical fiber with respect to the lens of a connector
    Patent number: 4989940
    Abstract: The invention relates to a device and method of aligning an optical fibre (4) with respect to the lens (2) of a connector, the optical fibre (4) being positioned such that a beam issuing from the optical fibre (4) and passing through the lens (2) is directed concentrically at a four-quadrant measuring device (8). A very simple method is obtained in that the four-quadrant measuring device (8) is provided with a focussing lens (10) at a distance equal to the focal length, and in that the axial distance between the front face of the optical fibre (4) and the lens (2) of the connector is adjusted such that the sum of the light intensities measured by the four elements (9) of the four-quadrant measuring device (8) has a minimum value.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: February 5, 1991
    Assignee: U.S. Philips Corp.
    Inventors: Heinrich W. Wollenweber, Detlev Lohmuller, Achim P. Mihm, Wolfgang W. Eutin