Short-arc discharge lamp with a starting antenna

US6380679B1 · kind B1 · utility

Assignee

• U.S. Philips Corporation · US

Inventors

• Dieter Leers · Stolberg, DE
• Klaus Lohn · Simmerath, DE
• Martin Ossmann · Aachen, DE
• Johannes Martinus De Regt · Cadier en Keer, NL
• Gunther Hans Derra · Aachen, DE
• Hubertus C. M. Van Den Nieuwenhuizen · Eindhoven, NL

Key dates

• Filing date: Mar 16, 1999
• Grant date: Apr 30, 2002
• Expiry date: Mar 16, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J61/86
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A short-arc discharge lamp (1) is provided with a translucent lamp vessel (10) which is closed in a gas-tight manner and which is provided with an ionizable fill. A first and a second electrode (11a, 11b) are arranged in the lamp vessel (10) which are each connected to its own current conductor (12a, 12b) which extends to outside the lamp vessel. A starting antenna (2) is arranged near to the lamp vessel, which antenna is connected to a further current conductor (24). The starting antenna comprises an antenna container (20) and a further electrode (22) which antenna container (20) is closed in a gas-tight manner and contains an ionizable fill, the further electrode (22) being connected to the further current conductor (24). This makes it possible to realize a shorter reignition time by means of a higher reignition voltage on the starting antenna while spark-over from the starting antenna (2) to the lamp vessel (10) is avoided.