Fluorescent lamp with high color rendering index and coating systems therefor
AssigneeGeneral Electric Company
InventorsFangming DU, Brett R. BRADLEY, William Erwin COHEN, Nathaniel Jon FARKAS, Clark David NELSON
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Abstract
A coating system for a fluorescent lamp, and fluorescent lamps provided therewith. The coating system includes a phosphor-containing coating containing a mixture of phosphors that contain less than 10% weight rare earth phosphors. The phosphor-containing coating emits visible light having a color rendering index of at least 87 when excited by UV radiation.
Claims20
A coating system comprising a phosphor-containing coating containing phosphors, the phosphors within the phosphor-containing coating consisting of a mixture of phosphors that comprise at least one white halophosphor and less than 10 weight percent of at least one rare earth phosphor, the phosphor-containing coating emitting visible light having a color rendering index of at least 87 when excited by UV radiation.
A fluorescent lamp having a coating system that comprises a phosphor-containing coating containing phosphors, the phosphors within the phosphor-containing coating consisting of a mixture of phosphors that comprise at least one white halophosphor and less than 10 weight percent of at least one rare earth phosphor, the fluorescent lamp in operation emitting visible light having a color rendering index of at least 87.
A fluorescent lamp having a coating system that comprises a phosphor-containing coating containing phosphors, the phosphors within the phosphor-containing coating consisting of a mixture of phosphors that comprise at least one white halophosphor, at least one strontium red phosphor, at least one blue halophosphor, and less than 10 weight percent of at least one rare earth phosphor,
- the fluorescent lamp in operation emitting visible light having a color rendering index of at least 87,
- wherein the visible light emitted by the fluorescent lamp has a CCT at a value within a range of about 3000K to about 4100K.
Dependencies are inferred from the claim text.