Schwegman, Lundberg, Woessner & Kluth, P.A.
Inductively coupled plasma generating devices
 A broad area plasma lighting device in which a sealed gas envelope placed adjacent to a planar inductive coupling structure generates visible light. Representative planar inductive coupling structures include a planar spiral coil and a parallel conductor coupling structure. According to the invention, a parallel conductor coupling structure has two basic forms: separate parallel conductors each driven by its own generator/tuning circuit, or single conductor such as a flattened helix or series of square coils driven by one generator/tuning circuit. In addition, a plasma generating device having one or more parallel conductor inductive coupling structures is described. The resulting plasma generator can be used in such applications as plasma processing and inductive plasma lighting. 
Wisconsin Alumni Research Foundation
H H
H01J H01J
inventional inventional
Guifang Jeffrey A.
Li Tobin