Patent ID: 6613277
Filing Date: 2003-09-02
Classification: A61L

Abstract:
An air purification system, comprising:a housing having an irradiation chamber; means for passing air through the irradiation chamber; an UV radiation generator mounted in the irradiation chamber for irradiating the air passing therethrough, and comprising at least one radiation source, the generator further defining at least two distinct radiation emitting regions producing differing spectra of ultraviolet radiation; an optical isolator disposed between the distinct emitting regions, the isolator physically separating the emitting regions, the isolator further providing that the radiation from one of said emitting regions is prevented from interacting with any radiation from another emitting region; and wherein the isolator is coated with a predetermined quantity of a material selected from the group consisting of silver, a silver oxide, copper, a copper oxide, microcrystalline titanium and titanium dioxide.