Electric lamp having a light source aligned to a cap

摘要

An electric lamp having a tubular metal cap, in which a metal sleeve is arranged. The pinch of a lamp envelope is accommodated in the sleeve with a clamping fit. The cap has at least three depressions which are distributed around its circumference and which are each secured to the sleeve. The inner diameter of the cap-apart from the depressions-is larger than the outer diameter of the sleeve over the whole length of the cap opposite the sleeve. The light source of this lamp can be aligned in three directions with respect to the cap by longitudinal movement and pivoting, about transverse axes before the sleeve securing the cap to the lamp envelope without the use of cement.