Patent ID: 8643277
Filing Date: 2014-02-04
Classification: H01J

Abstract:
1. A light source to be powered by microwave energy, the light source having: a solid plasma crucible of material which is lucent for exit of light therefrom, the lucent crucible having a sealed void therein; a microwave-enclosing Faraday case surrounding the lucent crucible, the case being at least partially light transmitting for light exit therethrough from the lucent crucible; a fill in the void of material excitable by microwave energy to form a light emitting plasma therein; an antenna arranged within the lucent crucible for transmitting plasma-inducing microwave energy to the fill, the antenna having: a generator of microwaves for excitation of a light emitting plasma in the sealed void, the generator having an output for microwaves; means for attaching the generator to the lucent crucible, the attachment means having: an electrical conductor passing along the passage from the output of the generator to the connection of the antenna, the conductor forming with the conductive passage a transmission line for microwave energy from the generator to the lucent crucible for excitation of the plasma therein.