Invention Grant
- Patent Title: High CRI lighting device with added long-wavelength blue color
- Patent Title (中): 高CRI照明装置,增加了长波长的蓝色
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Application No.: US13030421Application Date: 2011-02-18
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Publication No.: US08508117B2Publication Date: 2013-08-13
- Inventor: Gerald H. Negley , Antony Paul van de Ven , Bernd P. Keller , Ronan P. LeToquin , Peter Scott Andrews
- Applicant: Gerald H. Negley , Antony Paul van de Ven , Bernd P. Keller , Ronan P. LeToquin , Peter Scott Andrews
- Applicant Address: US NC Durham
- Assignee: Cree, Inc.
- Current Assignee: Cree, Inc.
- Current Assignee Address: US NC Durham
- Agency: Jenkins, Wilson, Taylor & Hunt, P.A.
- Agent Vincent K. Gustafson
- Main IPC: H01J1/62
- IPC: H01J1/62 ; H05B33/00

Abstract:
Solid state lighting devices include least one solid state emitter and multiple lumiphors, arranged to output aggregated emissions comprising at least one short wavelength blue peak, at least one long wavelength blue (LWB) peak, at least one yellow and/or green peak, and at least one red and/or orange peak. Presence of long wavelength blue enhances color rendering. At least one solid state emitter may include a short wavelength blue LED, LWB LED, and/or UV LED. Multiple emitters may be provided. Resulting devices may provide CRI greater than 85, efficiency of greater than 50 lm/watt, and color stability in a range of Δu′v′≦0.008 over a temperature change of 75° C.
Public/Granted literature
- US20110222277A1 HIGH CRI LIGHTING DEVICE WITH ADDED LONG-WAVELENGTH BLUE COLOR Public/Granted day:2011-09-15
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