Patent ID: 7345412

Claim:
An electric high pressure lamp having a base at one end comprising: a lamp bulb which is sealed in a vacuum-tight manner, said lamp bulb being surrounded by an envelope part, a base having on one side of the base, electrical connections that bear on the lamp bulb and another other side of the base, the base bears on the envelope part, characterized by the combination of the following features: a) the base has a base insulator which is produced from an insulating material and has a central opening in which the lamp bulb is accommodated without cement; b) the base insulator has a circular, radially projecting segment having an upper plateau which is associated with the base; c) on the base side the envelope part has a circular opening which rests on the upper plateau of the circular, radially projecting segment; and d) the envelope part is fixed to the base by means of cement, for which purpose the base insulator has a platform having a side wall in which at least one cut-out pocket is introduced.