Patent ID: 7495396

Claim:
A dielectric barrier discharge lamp comprising a) a discharge vessel including a single wall and having a principal axis, the discharge vessel enclosing a discharge volume filled with a discharge gas, the discharge vessel further comprising end portions intersected by the principal axis; b) at least two interconnected electrodes of a first type and at least two interconnected electrodes of a second type, the electrodes of one type being energized to act as a cathode and the electrodes of the other type being energized to act as an anode, the electrodes being substantially straight, elongated electrodes with a longitudinal axis substantially parallel to the principal axis of the discharge vessel; c) at least one of the electrodes being positioned within the discharge volume; d) the electrodes of at least one type being isolated from each other and from the other type by a separate dielectric layer; e) at least one of the electrodes inside the discharge volume being provided with an outer luminescent layer; and f) at least one of the electrodes inside the discharge volume provided with a luminescent layer also comprising a reflective layer at least partially encapsulated by the luminescent layer.