Lighting devices utilizing optical waveguides and remote light converters, and related methods

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United States of America Patent

PATENT NO 9441811
SERIAL NO

13817903

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Abstract

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A lighting device (100) includes a housing (104), a light converter (136), one or more light sources (132), and one or more optical waveguides (160). The housing includes a light exit (124) for outputting a combination of primary light (140) and secondary light (156,158). The light source emits a primary light beam of a primary wavelength. The optical waveguide includes an input end (162) optically coupled to the light source, and an output end (164) facing a housing interior (108) and positioned at an angle to an axial direction through the housing interior. The optical waveguide directs the primary light beam from the light source, through the housing interior and toward a luminescent material of the light converter. The luminescent material emits secondary light of one or more wavelengths different from the primary wavelength in response to excitation by the primary light beam. The light source may be mounted outside the housing interior so as not to obstruct light propagation.

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Patent Owner(s)

Patent OwnerAddress
RESEARCH TRIANGLE INSTITUTE INTERNATIONAL3040 CORNWALLIS ROAD RESEARCH TRIANGLE PARK NC 27709

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Davis, James Lynn Holly Springs, US 33 407
Lamvik, Michael Durham, US 5 33
Ward, Brent Thomas Cary, US 1 17

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