Patent ID: 7635949
Filing Date: 2009-12-22
Classification: H01J

Abstract:
1. A high-pressure discharge lamp comprising: an outer envelope in which a discharge vessel is arranged around a longitudinal axis, the discharge vessel enclosing, in a gastight manner, a discharge space provided with an ionizable filling, the discharge vessel having a first and a second mutually opposed neck-shaped portion through which a first and a second current supply conductor, respectively, extend to a pair of electrodes arranged in the discharge space, a lamp base of electrically insulating material supporting the discharge vessel via the first and second current supply conductors, the lamp base also supporting the outer envelope, the outer envelope enclosing the first and second current supply conductors, a getter being provided in the outer envelope, and outside the discharge vessel, the outer envelope having a volume equal to or less than 2 cc, and the getter comprising at least 2.5 mbar.mil nitrogen.