Electrodeless gas discharge lamp having flat induction coil and dual gas envelopes

摘要

An electrodeless gas discharge light assembly includes a lamp base (12) having a pair of light-transmitting lenses (14, 16) supported in axially opposed relation to one another. An electrodeless gas discharge light source (28) is mounted between the lenses (14, 16) and comprises a generally flat spiral induction coil (30) sandwiched between a pair of generally flat, planar envelopes (32, 34) in which an ionizable gas (46) is contained. Energizing the coil (30) inductively induces discharge illumination of the gas (46) causing light to be emitted in axially opposite directions through the lenses (14, 16) without obstruction by the coil (30).