ELECTRODELESS FLUORESCENT LAMP

摘要

An electrodeless fluorescent lamp comprises a sealed lamp vessel G containing a fill capable of sustaining a discharge when suitably executed. The fill is excited by an RF electromagnetic field produced by a winding 4 energised by an RF oscillator 5 powered via a rectifier 6 from the mains. To confine the RF field within the vessel a conductive coating FTO is provided inside the vessel G. To at least reduce conducted interference a conductive coating A1 is provided on the outside of the vessel G. The coating A1 is electrically coupled (e.g. via 7) to RF ground which may be one side of the mains. An electrically insulative housing covers the coating A1. The housing which extends to a zone of maximum diameter of the vessel G may grip the vessel.