Title: Color-tunable lighting devices and methods of use

Abstract

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.

Inventors:

Davis, James Lynn

Issue Date:

Tue Feb 07 00:00:00 EST 2017

Research Org.:

Research Triangle Institute, Research Triangle Park, NC (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1343292

Patent Number(s):

9562671

Application Number:

13/817,887

Assignee:

Research Triangle Institute

Patent Classifications (CPCs):

F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF

F - MECHANICAL ENGINEERING F21 - LIGHTING F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

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F - MECHANICAL ENGINEERING F21 - LIGHTING F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF

F21V13/08 - the elements being filters or photoluminescent elements and reflectors
F21V14/08 - by movement of the screens {or filters}
F21V29/74 - with fins or blades
F21V7/0008 - {providing for indirect lighting}
F21V7/28 - characterised by coatings
F21V9/30 - Elements containing photoluminescent material distinct from or spaced from the light source
F21V9/32 - characterised by the arrangement of the photoluminescent material
F21V9/38 - Combination of two or more photoluminescent elements of different materials
F21V9/40 - with provision for controlling spectral properties, e.g. colour, or intensity
F21V9/45 - by adjustment of photoluminescent elements

F - MECHANICAL ENGINEERING F21 - LIGHTING F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

F21Y2115/10 - Light-emitting diodes [LED]

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J1/63 - characterised by the luminescent material

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

H01L2924/00 - Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
H01L2924/0002 - Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
H01L33/507 - {the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body}
H01L33/60 - Reflective elements

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DOE Contract Number:  

FC26-06NT42861

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Aug 19

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE