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OwnerFangming Du, William Winder Beers +1inventors
InventorsFangming Du, William Winder Beers, Jon Bennett Jansma
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A fluorescent lamp is provided including a five phosphor blend comprising four rare earth phosphors, including BAMn, and a non-rare earth white halophosphate phosphor. This phosphor blend provides a lamp that exhibits high color rendering index (CRI), of at least about 85, i.e. at least 87, while simultaneously achieving good lumen output, or lumens per watt (LPW), of at least about 70, i.e. at least 75, at all CCTs, and particularly at lower CCT of between about 3000K and 4100K. The phosphor system provided includes a rare earth-doped red emitting phosphor, a rare earth-doped blue emitting phosphor, a rare earth-doped green-blue emitting phosphor, a rare earth-doped green emitting phosphor and a non-rare earth white halophosphate phosphor.
An arc discharge lamp comprising:
A method of providing white light illumination, the method comprising:
A phosphor blend comprising at least 4 rare earth phosphors in combination with a non-rare earth halophosphate phosphor, the blend capable of producing substantially white light upon activation.
Dependencies are inferred from the claim text.