Phosphor system in fluorescent lamps

摘要

A fluorescent lamp (10) including a phosphor layer (16) 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.