Patent-treuhand-gesellschaft Fuer Elektrische Gluehlampen Mbh

Patent-treuhaud-gesellschaft Für Elektrische Glühlampen Mbh

Gerhard Döll

Wolfgang Kumpf

Jörg Rink

Jörg Otterstätter

Joseph-A Olsen

The invention relates to contact-making of dielectrically impeded discharge lamps by means of a mechanical procedure with plastic deformation of a contact surfaceIt is thus possible to dispense with thermal steps such as soldered connections or welded connections and to therefore make savings in terms of time and on the complexity of the apparatus used.

Solder-free contact-making of dielectrically impeded discharge lamps

A coupling element () is proposed for the combining of at least two elongate lamps with in each case two ends. For this purpose, the coupling element () has a continuous receptacle area which is provided for receiving an end of each lamp. The receptacle area comprises a reflector () in order to reduce the luminance decrease in the region between the lamp ends. With one or a plurality of coupling elements according to the invention in conjunction with two or more elongate lamps, illumination systems having different luminous lengths can be realized in a modular manner.

Coupling element for elongate lamps and illumination system having this coupling element

A dielectric barrier discharge lamp having electrodes arranged on the wall of the discharge vessel has a VUV/VIS reflection layer () made of a material with a high secondary electron emission coefficient on at least a part of the inner wall of the discharge vessel. A luminescent material layer () is in turn applied on the VUV/VIS reflection layer (). Moreover, at least one partial region () without luminescent material is provided in the luminescent material layer (), this at least one partial region () partially uncovering the underlying VUV/VIS reflection layer () and additionally being arranged at least in direct proximity to one or more electrodes () of the lamp. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.

Discharge lamp with ignition aid of a UV/VIS material having high secondary electron emission coefficient

A dielectric barrier discharge lamp () having a tubular discharge vessel () and a luminescent material layer on at least a part of the inner wall of the discharge vessel () and having elongate electrodes () is provided with a coating () on a partial region of the inner wall at least at one end of the tubular discharge vessel (), which coating additionally covers an end of at least one elongate electrode () . The material of the coating () has a high secondary electron emission coefficient. As a result, the ignition behavior of the lamp is improved, in particular during ignition in darkness.

Tubular discharge lamp with ignition aid

In order to improve the starting of a dielectric barrier discharge lamp it is proposed to provide elements for igniting an auxiliary discharge inside the exhaust tube () of the lamp.

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Ulm, Germany

Gerhard Döll