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Optical manifold

United States Patent

February 23, 2010
View the Complete Patent at the US Patent & Trademark Office
Optical systems are described that have at least one source of a beam of blue light with divergence under A phosphor emits yellow light when excited by the blue light. A collimator is disposed with the phosphor and forms a yellow beam with divergence under A dichroic filter is positioned to transmit the beam of blue light to the phosphor and to reflect the beam of yellow light to an exit aperture. In different embodiments, the beams of blue and yellow light are incident upon said filter with central angles of,, and The filter may reflect all of one polarization and part of the other polarization, and a polarization rotating retroreflector may then be provided to return the unreflected light to the filter.
Falicoff; Waqidi (Stevenson Ranch, CA), Chaves; Julio C. (Madrid, ES), Minano; Juan Carlos (Madrid, ES), Benitez; Pablo (Madrid, ES), Dross; Oliver (Madrid, ES), Parkyn, Jr.; William A. (Lomita, CA)
11/ 982,480
November 2, 2007
STATEMENT REGARDING FEDERALLY FUNDED RESEARCH AND DEVELOPMENT This invention was supported in part by the National Energy Technology Laboratory Award No. DE-FC26-05NT42341. The Government may have certain rights in this invention.