Electrodeless low-pressure discharge lamp having ultraviolet reflecting layer

Electrodeless low-pressure discharge lamp having ultraviolet reflecting layer

An electrodeless low-pressure discharge lamp (10) which comprises a discharge vessel (12), a means for exciting discharge, an UV-to-visible-converting layer (32) and an UV reflecting layer (34). The discharge vessel (12) encloses a gas-tight discharge cavity (14) containing an ionizable fill. The di...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SAJO, GABOR, BADER, ATTILA, MIESKOSKI, JAMES D
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:An electrodeless low-pressure discharge lamp (10) which comprises a discharge vessel (12), a means for exciting discharge, an UV-to-visible-converting layer (32) and an UV reflecting layer (34). The discharge vessel (12) encloses a gas-tight discharge cavity (14) containing an ionizable fill. The discharge vessel (12) has a light-transmitting bulb portion (16) and a reentrant tube (18) protruding into the discharge cavity (14), and the bulb portion (16) and the reentrant tube (18) each exhibits a surface (21, 20) facing to the discharge cavity (14). The means for exciting discharge is arranged at least partially in the reentrant tube (18). The UV-to-visible-converting layer (32) is applied only to said surface (21) of the bulb portion (16), while the UV reflecting layer (34) is applied to said surface (20) of the reentrant tube (18).