Patent ID: 7990038

Claim:
A highly efficient, unitary dielectric barrier discharge (DBD) lamp for providing at least two dominant emission regimes comprising: a first wall; a second wall positioned in spaced-apart relation from the first wall, a discharge volume between the first wall and the second wall sealed and fillable with a gas, a distance between facing surfaces of the first and the second wall defining a discharge gap, wherein at least one of the first and the second wall comprises a dielectric wall and at least one of the first and the second wall is at least partially transparent; a separating wall positioned to divide the discharge volume into two sub-volumes within the discharge volume, wherein a width of a section of the first wall defining one sub-volume is different from a width a section of the first wall defining the other sub-volume, the widths of the sections of the first wall defining the two sub-volumes sufficiently different from each other to effect different dominant emission regimes for each of the sub-volumes; and a first and a second electrode in electrical contact with the first and the second wall, respectively, for delivering electrical power thereto.