Light sources
AssigneeThorn EMI plc
InventorsLen Giddens, John C. White, John G. Holden
Life of this patent
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Abstract
A luminaire is disclosed comprising a fluorescent plastics outer sleeve having a configuration such that a high proportion of the fluorescent light generated within the sleeve is emitted as visible light. The sleeve includes a fluorescent dye, which dye is excited by a blue phosphor discharge.
Claims11
A luminaire comprising a glass housing tube containing excitation means for exciting a phosphor material thereby to provide radiation having a wavelength greater than 420 nanometers, and a sleeve member, arranged to at least partially surround the glass housing tube and which sleeve member comprises a plastics material containing at least one fluorescent dye for providing visible light when excited by the radiation provided by the phosphor material, said sleeve member arranged to be supported by said tube.
Dependencies are inferred from the claim text.