FAR UV EMITTING DEVICE AND USE THEREOF

A far UV emitting device comprising a lamp envelope comprising a UV-transmissive wall and enclosing a space in a gastight manner. Said space comprising a discharge gas filling. The far UV emitting device further comprises a far UVC emitting source, e.g. a KrCl/KrBr source or a combination of a Xe di...

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Bibliographische Detailangaben
Hauptverfasser: WEGH, René, Theodorus, PEETERS, Martinus, Petrus, Joseph
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:A far UV emitting device comprising a lamp envelope comprising a UV-transmissive wall and enclosing a space in a gastight manner. Said space comprising a discharge gas filling. The far UV emitting device further comprises a far UVC emitting source, e.g. a KrCl/KrBr source or a combination of a Xe discharge with a far UVC generating phosphor, having its photon emission during operation in a far UVC wavelength range of 200-230 nm. The far UV emitting device still further comprises a deep UVC converting phosphor arranged downstream of the far UVC emitting source and having an excitation spectrum in a deep UVC wavelength range of 230-300 nm for converting radiation of the far UVC emitting source emitted in said deep UVC sub range as radiation into UVB and/or longer wavelength ranges during operation. Said deep UVC converting phosphor is transmissive for the far UVC range.