Patents by Inventor William J. Luetkemeyer

William J. Luetkemeyer 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).

  • Patent number: 6113252
    Abstract: Architectural luminaries utilize a common optical engine having a lamp coupled to an ellipsoidal reflector, a field stop aperture, and image-projecting lenses A color wheel, gobo wheel, and mechanical dimmer may also be included. A microlens element converts a spotlight optical engine into a wash light optical system. A multiple lens array provides variable diffusion. The optical engine is combined with an X-Y scanning mirror beam direction system in a substantially recessed housing for mounting in the ceiling of a building. The optical engine is combined with a pan-and-tilt yoke for greater range of coverage with an exposed luminaire.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: September 5, 2000
    Assignee: Vari-Lite, Inc.
    Inventors: Mark L. Arlitt, William J. Luetkemeyer, Matthew B. Johnson, Bryan S. McNatt, Mark Richards, Richard K. Steele