Cadmium free bug lamp with rutile TiO.sub.2 coating containing chromium and antimony in the rutile lattice
AssigneeGeneral Electric Company
InventorJuliana P. Reisman
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Abstract
A cadmium free bug lamp which emits a yellow color when energized and which has very low emission in the range of from 310-380 nm employs a coating wherein the yellow emitting pigment is a rutile TiO.sub.2 containing minor amounts of antimony and chromium in the rutile crystal lattice.
Claims14
An electric lamp which emits a yellow color when energized and which comprises a light transmissive envelope enclosing an electric light source within wherein the surface of said envelope contains a coating which comprises a rutile type TiO.sub.2 pigment which contains minor amounts of chromium and antimony in the the rutile lattice.
An electric lamp which emits a yellow color when energized and which comprises a vitreous, light transmissive envelope enclosing a filament within and wherein the surface of said envelope contains a coating which comprises a rutile TiO.sub.2 type of pigment which contains minor amounts of antimony and chromium in the rutile lattice and not as separate phases.
An electric lamp which emits a yellow color when energized and which comprises a vitreous, light transmissive envelope enclosing an electric light source within wherein the surface of said envelope contains a coating having a pigment which consists essentially of a rutile type TiO.sub.2 containing minor amounts of chromium and antimony in the rutile lattice and not as separate phases as the yellow light-emitting pigment.
Dependencies are inferred from the claim text.