A phosphor combination for a uv emitting device and a uv generating device utilizing such a phosphor combination

Abstract

A UV emitting device having at least one first phosphor that absorbs UV radiation of a wavelength shorter than 200 nm and at least one second phosphor which absorbs UV radiation of a wavelength between 220 nm and 245 nm. The at least one first phosphor emits UV radiation of a wavelength between 220 nm and 245 nm and the at least one second phosphor emits UV radiation of a wavelength between 250 nm and 315 nm. The at least one first phosphor and the at least one second phosphor are disposed in the form of layers, wherein the at least one first phosphor layer is positioned between a discharge volume and the at least one second phosphor layer.

Dependencies are inferred from the claim text.