Blue to yellow-orange emitting phosphor, and light source...

Details Blue to yellow-orange emitting phosphor, and light source... Blue to yellow-orange emitting phosphor, and light source...

2006-04-10

2009-02-10

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S498000, C313S501000, C257S103000, C445S023000

Reexamination Certificate

active

07489073

ABSTRACT:
The phosphor having the composition xAE2SiO4:D.yREN, in which AE=(Sr, Ba, Ca, Mg) and D=Eu, and RE=La, Y, delivers a blue to yellow-orange emission and is distinguished by a high efficiency. It can be used for a very wide range of light sources.

REFERENCES:
patent: 4810938 (1989-03-01), Johnson et al.
patent: 5998925 (1999-12-01), Shimizu et al.
patent: 2002/0195935 (2002-12-01), Jäger et al.
patent: 101 53 615 (2001-10-01), None
patent: WO 01/50540 (2001-07-01), None
patent: WO 03/080763 (2003-10-01), None

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