Patent ID: 6847167

Claim:
A high-pressure gas discharge lamp comprising: a quartz glass lamp vessel which is closed in a gastight manner, with a space which is enclosed by a wall and in which a pair of electrodes is arranged; an outer surface of said wall extending between the pair of electrodes; and a filling provided in the space and comprising a rare gas, a mercury buffer gas and halides of tin and indium, wherein the wall has a wall load of at least 30 W/cm 2 at its outer surface, and in that the filling further consists essentially of an alkali metal halide with at least one alkali ion and at least one halide ion, said alkali ion being chosen from the group formed by potassium, rubidium, and cesium, and the halide ion being chosen from the group formed by chlorine, bromine, and iodine, whereby rare earth halides are excluded from the filling.