High pressure discharge lamp.

摘要

A high pressure discharge lamp is disclosed. The high pressure discharge lamp includes: a discharge tube (1) which is filled with gas; a first electrode (3a) having a first end, the first electrode being provided in the discharge tube; and a second electrode (3b) having a second end which is positioned away from the first end by a certain distance, the second electrode being provided in the discharge tube. In the high pressure discharge lamp, arc discharge is induced by a voltage applied between the first end of the first electrode and the second end of the second electrode. The high pressure discharge lamp further includes a convection regulating member (6) which is electrically insulating and provided in the discharge tube. The convection regulating member suppresses the deformation of the arc discharge caused by the convection of the gas in the discharge tube. <IMAGE> <IMAGE>