| 简介 |
A fluorescent lamp (10) is provided including a five phosphor blend (16) comprising four rare earth phosphors, including BAMn, and a non-rare earth white halophosphate phosphor. This phosphor blend (16) provides a lamp (10) 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. |
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