Patents by Inventor Thomas W. Dowland, Jr.

Thomas W. Dowland, Jr. 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).

  • Illumination device for non-emissive displays
    Patent number: 6134092
    Abstract: An illumination device comprises a waveguide having a peripheral edge. A series of point light sources are mounted in spaced relationship adjacent a peripheral portion of the waveguide. A series of diffusive reflective surfaces, preferably formed by posts, are disposed adjacent the peripheral portion of the waveguide, between pairs of the point light sources. The diffusive reflective surfaces are oriented relative to the series of point light sources and the waveguide so as to introduce light into regions of the waveguide between pairs of the point light sources, whereby the peripheral portion of the waveguide is substantially uniformly illuminated.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: October 17, 2000
    Assignee: Teledyne Lighting and Display Products, Inc.
    Inventors: David G. Pelka, John M. Popovich, Thomas W. Dowland, Jr.