Abstract: In the method for producing a seal of a hollow chamber (12) of a glass tube (10), wherein the hollow chamber (12) contains fillers at a pressure greater than that of the atmosphere, the glass tube (10) is disposed in a working chamber (30) in which a pressure is generated that is greater than the pressure prevailing in the hollow chamber (12). The working chamber (30) contains a heating unit (50), which encompasses the glass tube (10) in a section (16) adjoining the hollow chamber (12) on at least one end and which melts the section (16) so that when melted, it is squeezed together by the pressure prevailing in the working chamber (30), thus sealing the hollow chamber (12) on at least one end. The glass tube (10) preferably constitutes a burner of a discharge lamp, in particular for use in motor vehicle headlights.

Abstract: A discharge lamp has a base with a burner having a discharge vessel with at least two electrodes and a supply conductor extending from the base to one electrode as well as a return conductor extending from the other electrode to the base, wherein the supply conductor is surrounded in the burner by a glass tube while the return conductor extends outside the burner along it, and between the surface of the supply conductor and an inner surface of the glass tube a distance is formed by an air-filled space and retained as low as possible or preferably at least approximately zero, so that the intensity of an electrical field formed between the supply conductor and the return conductor is low and the return conductor can be guided along near the burner, which makes possible a compact construction of the discharge lamp or the use of a high ignition voltage for the discharge lamp and/or its operation at high altitudes without the danger of partial discharges in the glass tube or ark-overs outside the discharge vessel.

Abstract: A discharge lamp assembly has a discharge lamp, and an ignition device for the discharge lamp, the ignition device including at least one inductive component and at least one capacitive component, at least a part of one of the components being surrounded by at least a part of the other of the components, the ignition device further having a housing in which the components are arranged and which is connectable with the discharge lamp.