Abstract: The light unit comprises a light source and a reflector. The light source is surrounded by an exterior pipe. Spring clips with a centering effect for the exterior bulb of the light source are anchored at the open end of the exterior pipe.

Abstract: The invention relates to a light unit, comprising a concave reflector (7) with an outlet opening and an axis, whereby the reflector encloses a light source running in the direction of the axis. The light source is enclosed at a separation from an open-ended cylindrical protective tube (16), with a glare shield (19), provided at the open end of the protective tube. The glare shield (19) is a sheet, cupped over the burst-protection tube, whereby the glare shield comprises a semi-circular end piece with a given maximum diameter, on which a straight cylindrical section of greater diameter is mounted which itself is further provided with an offset screen (21).

Abstract: A light bulb (1) with a base and inner vessel sealed in a vacuum-tight manner and surrounded by an enveloping part is provided with an adapter (13) at the end thereof made from ceramic polymer and fixed in a base insulator (12). The base insulator and the enveloping part are fastened to each other. The base insulator may be provided in pieces which fasten together and hold the adapter. The adapter allows cementless fastening of the inner bulb. The base insulator and the adapter part have matching indexing and mating indexing means for holding the base insulator and the adapter part in position relative to each other. Multiple mating indexing means on the base insulator allow the adapter to assume secure position at multiple heights relative to the base insulator.

Abstract: The light unit comprises a light source and a reflector. The light source is surrounded by an exterior pipe. Spring clips with a centering effect for the exterior bulb of the light source are anchored at the open end of the exterior pipe.

Abstract: The light source has external electrical power supply lines which are held in contact pins in the cap. The connection is made by crimping, with the electrical power supply line in each case having a plurality of notches.

Abstract: A holding device for fixing a lamp bulb comprises at least one clip element, the clip element, referred to as the main clip, having a peripheral flange as a supporting surface, which is adjoined at its inner rim by a peripheral side wall with a given height H, which is preferably cylindrically shaped, its free end forming a closing-off cover, the cover having a clearance which is adapted to the portion of the lamp bulb that is to be fixed.

Abstract: Electric lamp with a base at one end, having an inner vessel surrounded by an outer jacket, a base with electric connections supporting the inner vessel and the outer jacket, having the following features: a) the base has a base insulator with a central opening with a surrounding collar in which the inner vessel is held without cement; b) the base insulator has a circular, radially projecting segment with an associated upper and lower plateau with reference to the base; c) the outer jacket has a circular opening on the base side with a radially projecting edge that has an upper and lower contact surface with reference to the base, the lower contact surface of the edge being compatible with the upper plateau of the circular, radially projecting segment at the base insulator; and d) the outer jacket is fastened on the base by a cementless mechanical holding mechanism.

Abstract: A light bulb (1) is provided at the end thereof with an adapter (13) made from ceramic polymer, fixed in a multi-piece socket base (12).

Abstract: An electric lamp with a holder on one side, particularly a high-pressure discharge lamp, comprising a vacuum-tight sealed inner vessel which is surrounded by a surrounding part, wherein one holder with electrical connections bears the inner vessel and the surrounding part. The lamp is characterized by the following features: a) the holder is comprised of a holder stone having a central opening and a surrounding collar in which the inner vessel is accommodated; b) the holder stone has an element for fixing the surrounding part, c) the surrounding part has a circular opening on the holder side, that has a given inner diameter ID, and has a radially outwardly protruding enlargement with a given outer diameter UB, which is used as a holding member on the holder stone, wherein the ratio UB:ID=1.25; d) the surrounding part is fixed to the holder stone by a cement-free mechanical holding mechanism.

Abstract: The invention relates to a light unit, comprising a concave reflector (7) with an outlet opening and an axis, whereby the reflector encloses a light source running in the direction of the axis. The light source is enclosed at a separation from an open-ended cylindrical protective tube (16), with a glare shield (19), provided at the open end of the protective tube. The glare shield (19) is a sheet, cupped over the burst-protection tube, whereby the glare shield comprises a semi-circular end piece with a given maximum diameter, on which a straight cylindrical section of greater diameter is mounted which itself is further provided with an offset screen (21).

Abstract: An electric lamp having a base at one end, a lamp bulb sealed in a vacuum-tight manner, the lamp bulb being surrounded by an envelope part, a base having electrical connections bearing on one side the outer bulb and on the other side the envelope part, having the following features: a) the base has a base insulator which has a central opening in which the outer bulb is accommodated without cement; b) the base insulator has a circular, radially projecting segment having an upper and lower plateau which is associated with the base; c) on the base side the envelope part has a circular opening having a radially projecting edge which has a lower and an upper contact surface in relation to the base, the lower contact surface matching the upper plateau; and d) the envelope part is fixed to the base via a cement-free, mechanical retaining mechanism.

Abstract: A lamp that has a base with a base insulator. Power supply lines are connected in the base to extension wires by means of coils.

Abstract: High-pressure lamp with a base, having an inner vessel sealed in a vacuum-tight manner, and surrounded by a sleeve part, a base having electrical terminals bearing, on one side, the inner vessel and, on the other side, the sleeve part, the reflector being of rotationally symmetrical design, and having a contour divided into at least two zonal layers, whose axial height is dimensioned such that each zone captures at least 35% of the light intensity emerging from the center of the inner vessel, and a first zone reflecting back at least 90% of the light incident on it at positive angles in relation to the lamp axis, and a second zone reflecting back at least 90% of the light incident on it at negative angles in relation to the lamp axis, and the inner vessel containing a metal halide filling, and the lamp having a specified average color temperature.

Abstract: Electric lamp with a base at one end, having an inner vessel surrounded by an outer jacket, a base with electric connections supporting the inner vessel and the outer jacket, having the following features: a) the base has a base insulator with a central opening with a surrounding collar in which the inner vessel is held without cement; b) the base insulator has a circular, radially projecting segment with an associated upper and lower plateau with reference to the base; c) the outer jacket has a circular opening on the base side with a radially projecting edge that has an upper and lower contact surface with reference to the base, the lower contact surface of the edge being compatible with the upper plateau of the circular, radially projecting segment at the base insulator; and d) the outer jacket is fastened on the base by a cementless mechanical holding mechanism.

Abstract: High-pressure lamp with a base, having an inner vessel sealed in a vacuum-tight manner, and surrounded by a sleeve part, a base having electrical terminals bearing, on one side, the inner vessel and, on the other side, the sleeve part, the reflector being of rotationally symmetrical design, and having a contour divided into at least two zonal layers, whose axial height is dimensioned such that each zone captures at least 35% of the light intensity emerging from the center of the inner vessel, and a first zone reflecting back at least 90% of the light incident on it at positive angles in relation to the lamp axis, and a second zone reflecting back at least 90% of the light incident on it at negative angles in relation to the lamp axis, and the inner vessel containing a metal halide filling, and the lamp having a specified average color temperature.

Abstract: An electric lamp having a base at one end, a lamp bulb sealed in a vacuum-tight manner, the lamp bulb being surrounded by an envelope part, a base having electrical connections bearing on one side the outer bulb and on the other side the envelope part, having the following features: a) the base has a base insulator which has a central opening in which the outer bulb is accommodated without cement; b) the base insulator has a circular, radially projecting segment having an upper and lower plateau which is associated with the base; c) on the base side the envelope part has a circular opening having a radially projecting edge which has a lower and an upper contact surface in relation to the base, the lower contact surface matching the upper plateau; and d) the envelope part is fixed to the base via a cement-free, mechanical retaining mechanism.

Abstract: A holding device for fixing a lamp bulb comprises at least one clip element, the clip element, referred to as the main clip, having a peripheral flange as a supporting surface, which is adjoined at its inner rim by a peripheral side wall with a given height H, which is preferably cylindrically shaped, its free end forming a closing-off cover, the cover having a clearance which is adapted to the portion of the lamp bulb that is to be fixed.