SCATTERED-PHOTON EXTRACTION-BASED LIGHT FIXTURES

Title:

SCATTERED-PHOTON EXTRACTION-BASED LIGHT FIXTURES

Document Type and Number:

WIPO Patent Application WO/2011/112914

Kind Code:

A3

Abstract:

A scattered photon extraction light fixture includes an optic element having a first surface; a light source for emitting short wavelength radiation, the light source disposed opposite, perpendicular, or tangential to the first surface of the optic element; a wavelength- conversion material, disposed on the first surface of the optic element, for receiving and down converting at least some of the short wavelength radiation emitted by the light source and transferring a portion of the received and down converted radiation; and one or more reflectors positioned opposite the wavelength-conversion material. A scattered photon extraction light system includes a plurality of light emitting fixtures. One or more wavelength-conversion materials, in the embodiments of the present invention, are disposed remotely from the light source(s), and used to absorb radiation in one spectral region and emit radiation in another spectral region. Lighting efficiency is improved by capturing the short wavelength and down-converted radiation.

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Inventors:

NARENDRAN NADARAJAH (US)
GU YIMIN (US)
FREYSSINIER JEAN PAUL (US)
ZHU YITING (US)

Application Number:

PCT/US2011/028069

Publication Date:

December 29, 2011

Filing Date:

March 11, 2011

Export Citation:

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Assignee:

RENSSELAER POLYTECH INST (US)
NARENDRAN NADARAJAH (US)
GU YIMIN (US)
FREYSSINIER JEAN PAUL (US)
ZHU YITING (US)

International Classes:

F21V13/12; F21V3/04; F21V5/00; F21V9/40; F21V29/00; F21Y101/02

Foreign References:

US20090250714A1	2009-10-08
US20020047516A1	2002-04-25
US3875456A	1975-04-01
JP2008251940A	2008-10-16

Other References: