Optimized phosphor system for improved efficacy lighting...

Electric lamp and discharge devices – With gas or vapor – Three or more electrode discharge device

Reexamination Certificate

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C313S485000, C313S486000, C252S30140R

Reexamination Certificate

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07119488

ABSTRACT:
A fluorescent lamp including a phosphor layer comprising a phosphor blend including four or more optimized phosphors emitting within a specific spectral range to optimize luminosity for a given color rendering index (CRI) and color coordinated temperature (CCT). The blend will include at least four phosphors selected from the following: a blue phosphor having an emission peak at 440–490 nm, a blue-green phosphor having an emission peak at 475–525 nm, a green phosphor having an emission peak at 515–550 nm, an orange phosphor having an emission peak from 550–600 nm, a deep red phosphor having an emission peak at 615–665 nm, and a red phosphor having an emission peak at 600–670 nm.

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Inorganic Phosphors: Compositions, Preparation and Optical Properties, CRC Press, 2004.

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