Patent ID: 6693379
Filing Date: 2004-02-17
Classification: H01J

Abstract:
A high-pressure discharge lamp, comprising:a discharge chamber that is formed in a silica glass tube; a pair of electrodes each having one end that confronts one end of the other electrode in said discharge chamber; metal foil parts that each are superposed and connected to the other ends of said electrodes; an end of each metal foil part on a side of each of said electrodes being formed as a tapered portion, and moreover, a tip of each of said tapered portions on the side of each of the electrodes being, with respect to its direction of width, within the width in a radial direction of said electrodes; sealing sections for forming a hermetic seal of said discharge chamber, these sealing sections being parts for embedding said other ends of said electrodes and said metal foil parts in glass at two ends of said silica glass tube in a state such that the vicinity of each junction of said electrodes and said metal foil parts is wrapped in a metal coil.