Abstract: High-pressure discharge lamp having a ceramic discharge vessel, in which two electrodes and a light-emitting filling are contained, wherein capillaries are positioned at the ends of the discharge vessel, in which capillaries leadthroughs are sealed off, which leadthroughs are each connected to an electrode (15) consisting of tungsten. The electrode (15) is in the form of a pin and integrally comprises two parts (25, 26) having different diameters, wherein the first part (25) having a given diameter D1 forms the electrode tip, the second part (26) having a diameter D2 is positioned in the capillary, and the diameter D2 of the second part makes up at least 108% of the diameter D1 of the first part.

Abstract: An electrode for a high-pressure discharge lamp, cut out in one piece from a rod or pin is provided. The electrode may include an electrode head as first segment; and a shaft as second segment, wherein the electrode has an asymmetrical shape which has been produced by means of a sublimation laser.

Abstract: Metal halide lamp with ceramic discharge vessel (4), the discharge vessel having two ends (6) which are closed off by stoppers, and an electrically conductive leadthrough (9) being passed through this stopper (12), an electrode (15) having a shank (16), which projects into the interior of the discharge vessel, being secured to the leadthrough. The leadthrough is composed of two portions of different diameters, with the outer portion resting on the end face of the stopper.

Abstract: The frame that holds a discharge vessel in an outer bulb is manufactured from Nb or Zr, said frame acting as getter in an evacuated outer bulb.

Abstract: At least on one end (6a) of a metal halogenide lamp comprising a ceramic discharge vessel, the stopper (11) homogeneously consists of an MoV alloy. The stopper is welded to the duct (9) on the outside.

Abstract: High-pressure discharge lamp having a ceramic discharge vessel, in which two electrodes and a light-emitting filling are contained, wherein capillaries are positioned at the ends of the discharge vessel, in which capillaries leadthroughs are sealed off, which leadthroughs are each connected to an electrode (15) consisting of tungsten. The electrode (15) is in the form of a pin and integrally comprises two parts (25, 26) having different diameters, wherein the first part (25) having a given diameter D1 forms the electrode tip, the second part (26) having a diameter D2 is positioned in the capillary, and the diameter D2 of the second part makes up at least 108% of the diameter D1 of the first part.

Abstract: Metal halide lamp with ceramic discharge vessel (4), the discharge vessel having two ends (6) which are closed off by stoppers, and an electrically conductive leadthrough (9) being passed through this stopper (12), an electrode (15) having a shank (16), which projects into the interior of the discharge vessel, being secured to the leadthrough. The leadthrough is composed of two portions of different diameters, with the outer portion resting on the end face of the stopper.

Abstract: A metal halide lamp with ceramic discharge vessel (4), the discharge vessel having two ends (6) that are sealed with stoppers, and an electrically conducting lead-through (9) being guided through these stoppers (12), there being fastened on the lead-through an electrode (15) with a stem (16) that projects into the interior of the discharge vessel, lead-through and electrode together being designated as an electrode system. The lead-through being a niobium pin, and the electrode stem (16) consisting of two pins, a pin made from tungsten being arranged situated on the inside on the discharge side, and a pin made from molybdenum being arranged on the outside on the discharge side and having a length of 3 to 8 mm.

Abstract: A metal halide lamp having a ceramic discharge vessel with two ends which are closed off by stoppers, and an electrically conductive leadthrough guided through this stopper. An electrode with a shank secured to the leadthrough, which electrode projects into the interior of the discharge vessel. The leadthrough and electrode referred to as an electrode system, comprises two components, which are designed as pins of different diameter, the larger component being a niobium pin and the smaller component, which adjoins it on the inner, discharge side, being a pin made from molybdenum or tungsten which is fitted in a bore in the niobium pin. The ratio of the diameter of the smaller component to that of the Nb pin is between 30 and 65%, and the pin which has been fitted in is secured in the bore by a mechanical pressing operation.

Abstract: A lamp bulb (1) made from glass is sealed at one end by a pinch (2). A base (5) is fastened on the pinch (2) by means of a metal spring (6). The base (5) has a holder (7) loosely adapted to the pinch (2). The metal spring (6; 26) is bent in a U-shaped fashion and comprises a base part (11) and two limbs (12, 13) which embrace the pinch, the fastening of the base (5) being accomplished by virtue of the fact that one limb (12) is aligned essentially parallel to the longitudinal axis, but simultaneously has a transverse extent accessible to spring forces, the transverse extent of this limb being stressed by the holder (7) of the base.