Phosphor blend and fluorescent lamp containing same

Details Phosphor blend and fluorescent lamp containing same Phosphor blend and fluorescent lamp containing same

C - Chemistry, Metallurgy

09

K

C09K 11/77 (2006.01) H01J 61/44 (2006.01)

Patent

CA 2760577

A phosphor blend is described wherein the blend consists of a red-emitting rare earth phosphor, a green-emitting rare earth phosphor, and a blue-emitting rare earth phosphor wherein the 50% size of the phosphors is between about 12 to 15 µm. The phosphor blend is incorporated into a fluorescent lamp having an increased efficacy. A dual layer coating may be used to provide an additional increase in efficacy.

L'invention porte sur un mélange de luminophores, le mélange consistant en un luminophore à base de terres rares émettant dans le rouge, un luminophore à base de terres rares émettant dans le vert et un luminophore à base de terres rares émettant dans le bleu, où le diamètre volumétrique moyen des particules des luminophores est comprise entre environ 12 et 15 µm. Le mélange de luminophores est incorporé dans une lampe fluorescente ayant une efficacité accrue. On peut utiliser un revêtement à deux couches, pour assurer une augmentation supplémentaire de l'efficacité.

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