Patent ID: 7045960
Filing Date: 2006-05-16
Classification: H01J

Abstract:
1. A high-pressure discharge lamp for motor vehicle headlamps, comprising: a discharge vessel, which has a tubular section which consists of a transparent sapphire ceramic and the internal diameter of which is less than or equal to 2.0 mm; two electrodes for generating a gas discharge, which are enclosed in a gastight manner in the discharge vessel and the discharge-side ends of which are arranged opposite one another in the tubular section, with the result that the distance between the discharge-side ends of the electrodes is less than or equal to 10 mm, and an ionizable mercury-free fill which is enclosed in the discharge vessel, is used as a discharge medium and consists of xenon with a cold filling pressure of at least 2000 hPa and halides of the metals sodium, dysprosium, holmium, thulium and thallium.