Invention Grant
- Patent Title: Lighting device and lighting method
- Patent Title (中): 照明装置和照明方法
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Application No.: US13740911Application Date: 2013-01-14
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Publication No.: US08878429B2Publication Date: 2014-11-04
- Inventor: Antony Paul Van De Ven , Gerald H. Negley
- Applicant: Cree, Inc.
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Burr & Brown, PLLC
- Main IPC: H01J1/62
- IPC: H01J1/62 ; H01J63/04 ; H05B33/08 ; G09G3/20 ; F21K99/00 ; F21V9/16 ; G09G3/32

Abstract:
A lighting device comprising sources of visible light comprising solid state light emitters and/or luminescent materials emitting three or four different hues. A first group of the sources, when illuminated, emit light of two hues which, if combined, would produce illumination having coordinates within an area on a 1931 CIE Chromaticity Diagram defined by points having coordinates: 0.59, 0.24; 0.40, 0.50; 0.24, 0.53; 0.17, 0.25; and 0.30, 0.12. A second group of the sources is of an additional hue. Mixing light from the first and second groups produces illumination within ten MacAdam ellipses of the blackbody locus. Also, a lighting device comprising a white light source having a CRI of 75 or less and at least one solid state light emitters and/or luminescent material. Also, methods of lighting.
Public/Granted literature
- US20130194792A1 LIGHTING DEVICE AND LIGHTING METHOD Public/Granted day:2013-08-01
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