Importance

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Abstract

A light source to be powered by microwave energy, the source having: a body having a sealed void therein, a microwave-enclosing Faraday cage surrounding the body, a fill in the void of material excitable by microwave energy to form a light emitting plasma therein, and an antenna arranged within the body for transmitting plasma-inducing, microwave energy to the fill, the antenna having: a connection extending outside the body for coupling to a source of microwave energy; wherein the body is a solid plasma crucible of material which is lucent for exit of light therefrom, the plasma crucible is contoured with a contoured surface to reflect light internally within the lucent crucible material to exit in a particular direction, the Faraday cage is at least partially light transmitting for light exit from the plasma crucible in the particular direction.

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First Claim