Patent ID: 7605541
Filing Date: 2009-10-20
Classification: B23K,C22C,H01J

Abstract:
1. An external-electrode discharge lamp comprising: a cylindrical glass bulb having a closed hollow space defined therein; a discharge medium sealed in said closed hollow space defined in said glass bulb; an external electrode disposed on an outer surface of each of opposite ends of said glass bulb for causing a dielectric barrier discharge in said discharge medium, said external electrode comprising a metal strip extending circumferentially on and around an outer surface of said glass bulb and having a C-shaped structure with opposite ends of the metal strip being spaced circumferentially from each other so as to form a gap; and a brazing material disposed fully circumferentially on a portion of the outer surface of said glass bulb on which said external electrode is positioned, including the gap between the opposite ends of said external electrode, wherein an inside diameter of said external electrode is smaller than an outside diameter of said glass bulb.