Method and apparatus for igniting electrodeless lamp with ferroe

Details Method and apparatus for igniting electrodeless lamp with ferroe Method and apparatus for igniting electrodeless lamp with ferroe

1996-07-10

1998-12-08

Wong, Don

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315344, 315267, 31323161, 313 44, H05B 4116

Patent

active

058475176

ABSTRACT:
Ignition of an electrodeless lamp, energized by microwave or radio frequency energy, is achieved by disposing a ferroelectric igniter in the lamp envelope along with the fill material. The igniter responds to switching of its spontaneous ferroelectric polarization by emitting electrons that collide with the atoms of the fill material to discharge further electrons and ultimately provide emission of light. In the preferred embodiment, the microwave or radio frequency energy used to excite the fill material is applied to the ferroelectric igniter to cause switching of its spontaneous ferroelectric polarization. Another preferred feature is the securing of the igniter, in the form of a thin patch or wafer, to the inside surface of the lamp envelope in a generally perpendicular orientation to the electric field in the microwave excitation energy.

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