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COLOR-TUNABLE LIGHTING DEVICES AND METHODS FOR TUNING COLOR OUTPUT OF LIGHTING DEVICES

United States Patent Application

*** PATENT GRANTED ***
20130215597
9,562,671
A1
View the Complete Application at the US Patent & Trademark Office
A lighting device (100) includes a housing (104) enclosing a housing interior (108), a light source (132), a light converter (136), and a color tuning device. The light source is configured for emitting a primary light beam of a primary wavelength (140) through the housing interior. The light converter includes a luminescent material (144) facing the housing interior and configured for emitting secondary light (156, 158) of one or more wavelengths different from the primary wavelength, in response to excitation by the primary light beam. The housing includes a light exit (124) for outputting a combination of primary light and secondary light. The color tuning device is configured for adjusting a position of the primary light beam relative to the luminescent material.
Davis, James Lynn (Holly Springs, NC)
RESEARCH TRIANGLE INSTITUTE, INTERNATIONAL (RESEARCH TRIANGLE PARK NC)
13/ 817,887
August 19, 2011
FEDERALLY SPONSORED SUPPORT [0002] This invention was made with government support under Award No. DE-FC26-06NT42861 by the U.S. Department of Energy. The United States Government may have certain rights in the invention.