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.
Claims17
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 non-rare-earth blue halophosphor and at least one white halophosphor, wherein rare earth-containing phosphors constitute not more than about 10 weight percent of the phosphor content of the coating, the phosphor-containing coating emitting visible light having a color rendering index of at least 87 when excited by UV radiation;
- wherein the visible light has a CCT at a value within a range of about 3000 K to about 4100 K.
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 non-rare-earth blue halophosphor, wherein rare earth-containing phosphors constitute not more than about 10 weight percent of the phosphor content of the coating,
- 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 3000 K to about 4100 K.
Dependencies are inferred from the claim text.