HIGH-PRESSURE DISCHARGE LAMP

摘要

PROBLEM TO BE SOLVED: To enhance security of a high-pressure discharge lamp by improving pressure reristance of the discharge electrode and broadening the width of design for pressure resistance. SOLUTION: A metal foil 4 is connected between a lead wire 5 to be connected with a drive unit for the lamp and a discharging electrode bar 3. The discharging electrode bar 3 is constituted so that it is covered with the metal foil 4 in the connecting part between the bar 3 and the foil 4, and the electrode edge of the bar 3 is not exposed to the outside. Furthermore, the width of the foil 4 on the side connected with the bar 3 is made narrower than the width of the foil 4, on the side connected to the lead wire 5.