A low mercury consumption electric lamp is provided having a a layer of a
luminescent material comprising a phosphor derived from a mixture of a
blue-halo calcium halophosphate phosphor having an average particle size
within the range of about 6.6 to about 10 microns; a calcium-yellow
calcium halophosphate phosphor having an average particle size within the
range of about 9.0 to about 13 microns; and fines of a warm-white calcium
halophosphate phosphor, preferably having an average particle size of
about 4.62.
