Patent ID: 7004809
Filing Date: 2006-02-28
Classification: H01J

Abstract:
1. A method of assembling an illuminant for a discharge lamp, comprising: supporting and positioning a cylindrical housing comprising a first open end and a second open end; inserting a first discharge electrode into the first open end, said discharge electrode comprising a concave section; inserting a second discharge electrode into the second open end; adjusting a position of the first discharge electrode within the cylindrical housing relative to the second discharge electrode such that first discharge electrode is opposed to the second discharge electrode and a predetermined gap is formed between the first discharge electrode and the second discharge electrode; heating the cylindrical housing to a sufficient temperature to fix each of the first discharge electrode and the second electrode to the cylindrical housing such that the predetermined gap is maintained; disposing an additive material on the concave section of said first discharge electrode; evaporating the additive material during the heating of the cylindrical housing; and wherein the cylindrical housing is supported and positioned in a vertical position.