High-pressure discharge lamp

摘要

A high-pressure discharge lamp has an outer envelope ( 1 ) in which a discharge vessel ( 11 ) is arranged. The discharge vessel encloses a discharge space ( 13 ) with an ionizable filling. The discharge vessel has two mutually opposed neck-shaped portions ( 2,3 ) through which current supply conductors ( 4,5 ) extend to a pair of electrodes ( 6,7 ) in the discharge space. A lamp base ( 8 ) of electrically insulating material supports the discharge vessel. The lamp base also supports the outer envelope ( 1 ). The outer envelope encloses the current supply conductors and is connected to the lamp base in a gas-tight manner. By controlling the atmosphere in the outer envelope, a simplified and compact high-pressure discharge lamp is provided with an accurate positioning of the discharge vessel with respect to the optical axis of the lighting system. The high-pressure discharge lamp can be suitably applied in an assembly with a reflector.