Patent ID: 8174191

Claim:
A dielectric barrier discharge lamp ( 1 ) with a coaxial double-tube arrangement with a discharge vessel, which comprises an outer tube ( 2 ) and an inner tube ( 3 ), wherein the inner tube ( 3 ) is arranged coaxially within the outer tube ( 2 ), the inner tube ( 3 ) and the outer tube ( 2 ) are connected to one another in a gas-tight manner, as a result of which a discharge space ( 4 ) filled with a discharge medium is formed between the inner and outer tubes, an outer electrode ( 12 ), which is arranged on the outside of the outer tube ( 2 ), an inner electrode ( 7 ), which is arranged within the inner tube ( 2 ), a getter material ( 9 ), which is in contact with the discharge medium, characterized in that the inner tube ( 3 ) is shorter than the outer tube ( 2 ), the inner tube ( 3 ) and the outer tube are connected to one another in a gas-tight manner at one of their respective ends, the outer tube ( 2 ) is sealed in a gas-tight manner at its other end, the inner tube ( 3 ), which protrudes into the outer tube ( 2 ), comprises the following: a first tube section, the inner electrode tube ( 8 ), in which the inner electrode ( 7 ) is arranged, a second tube section, the getter tube ( 10 ), in which the getter material ( 9 ) is arranged, a dividing wall ( 11 ), which separates the two tube sections from one another in a gas-tight manner.