Patent ID: 9041276
Filing Date: 2015-05-26
Classification: H01J

Abstract:
1. A field emission lighting arrangement, comprising: a plurality of individually controllable field emission cathodes; an anode structure comprising a base material, a phosphor layer on a first side of the base material, and a plurality of heat sink flanges protruding from an opposing second side of the base material, the base material being thermally and electrically conductive and optically reflective, the plurality of heat sink flanges configured to dissipate heat generated during operation of the field emission lighting arrangement; an evacuated envelope inside of which the anode structure and the plurality of individually controllable field emission cathodes are arranged; and a power supply configured to provide an individual high voltage drive signal to each of the plurality of individually controllable field emission cathodes, wherein the anode structure is configured to receive electrons emitted by a designated one or more of the plurality of individually controllable field emission cathodes when the individual high voltage drive signal is provided to apply a voltage between the anode structure and the designated one or more of the plurality of individually controllable field emission cathodes, and the anode structure is configured to reflect light generated by the phosphor layer out from the evacuated envelope.