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Optical keyboard

United States Patent

January 16, 2001
View the Complete Patent at the US Patent & Trademark Office
Brookhaven National Laboratory - Visit the Office of Technology Commercialization and Partnerships Website
An optical keyboard includes an optical panel having optical waveguides stacked together. First ends of the waveguides define an inlet face, and opposite ends thereof define a screen. A projector transmits a light beam outbound through the waveguides for display on the screen as a keyboard image. A light sensor is optically aligned with the inlet face for sensing an inbound light beam channeled through the waveguides from the screen upon covering one key of the keyboard image.
Veligdan; James T. (Manorville, NY), Feichtner; John D. (Fiddletown, CA), Phillips; Thomas E. (San Diego, CA)
Brookhaven Science Associates (Upton, NY)
09/ 346,538
July 2, 1999
This invention was made with Government support under contract number DEAC02-98CH10886, awarded by the U.S. Department of Energy. The Government has certain rights in the invention.