Patents by Inventor John Schweyen

John Schweyen 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).

  • Optical device comprising a plurality of units having at least two geometrically-differentiated tapered optical waveguides therein
    Patent number: 5657408
    Abstract: The present invention provides an optical device comprising: (a) a substrate; and (b) a plurality of units on the substrate. Each of the units comprises a plurality of tapered waveguides wherein: (i) each of the waveguides has a light input surface adjacent the substrate (a) and a light output surface distal from the light input surface and the light input surface area is greater than the light output surface area; (ii) each of the waveguides tapers from its light input surface to its light output surface at an angle; and (iii) at least one of the light input surface area or the light output surface area of at least one of the tapered waveguides is different than the corresponding surface area of the remaining tapered waveguides in the unit. Preferably, the optical device is a viewing film. The present viewing film has reduced or substantially eliminated intensity hot spots and interference patterns.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: August 12, 1997
    Assignee: AlliedSignal Inc.
    Inventors: Paul Ferm, Scott Zimmerman, Karl Beeson, John Schweyen, Okan Tezucar