Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...
Reexamination Certificate
2011-03-15
2011-03-15
Ngo, Ngan (Department: 2893)
Active solid-state devices (e.g., transistors, solid-state diode
Incoherent light emitter structure
With reflector, opaque mask, or optical element integral...
C257S100000, C257SE33059, C257SE33061, C257SE33072
Reexamination Certificate
active
07906790
ABSTRACT:
A light emitting device including a phosphor blend including four or more phosphors emitting within a specific spectral range to optimize the color rendering index (CRI) for a given color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 400-500 nm, a green phosphor having an emission peak at 500-575 nm, an orange phosphor having an emission peak from 575-615 nm, and a deep red phosphor having an emission peak at 615-680 nm. The preferred blends are used to make light sources with general CRI values (Ra) greater than 95 at CCT's from about 2500 to 8000 K.
REFERENCES:
patent: 6084250 (2000-07-01), Juestel et al.
patent: 6278135 (2001-08-01), Srivastava et al.
patent: 6429583 (2002-08-01), Levinson et al.
patent: 2003/0067008 (2003-04-01), Srivastava et al.
patent: 2003/0075705 (2003-04-01), Wang et al.
patent: 2004/0245532 (2004-12-01), Maeda et al.
patent: 2010/0019202 (2010-01-01), Li et al.
patent: 1 574 558 (2005-09-01), None
patent: WO 01/89000 (2001-11-01), None
patent: WO 01/89001 (2001-11-01), None
patent: WO 03/032407 (2003-04-01), None
HunterLab, “Equivalent White Light Sources and CIE Illuminant”,Applications Note: Insight on Color, May 2005, vol. 17, No. 5, pp. 1-5, Copyright HunterLab 2005.
Radkov Emil
Setlur Anant A.
Fay Sharpe LLP
GE Lighting Solutions, LLC
Ngo Ngan
LandOfFree
Full spectrum phosphor blends for white light generation... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Full spectrum phosphor blends for white light generation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full spectrum phosphor blends for white light generation... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2756096