Electric lamp and discharge devices: systems – Pulsating or a.c. supply – Induction-type discharge device load
Patent
1996-11-22
1999-06-08
Wong, Don
Electric lamp and discharge devices: systems
Pulsating or a.c. supply
Induction-type discharge device load
315 39, 315236, 315344, H05B 4116
Patent
active
059107103
ABSTRACT:
An electrodeless lamp waveguide structure includes tuned absorbers for spurious RF signals. A lamp waveguide with an integral frequency selective attenuation includes resonant absorbers positioned within the waveguide to absorb spurious out-of-band RF energy. The absorbers have a negligible effect on energy at the selected frequency used to excite plasma in the lamp. In a first embodiment, one or more thin slabs of lossy magnetic material are affixed to the sidewalls of the waveguide at approximately one quarter wavelength of the spurious signal from an end wall of the waveguide. The positioning of the lossy material optimizes absorption of power from the spurious signal. In a second embodiment, one or more thin slabs of lossy magnetic material are used in conjunction with band rejection waveguide filter elements. In a third embodiment, one or more microstrip filter elements are tuned to the frequency of the spurious signal and positioned within the waveguide to couple and absorb the spurious signal's energy. All three embodiments absorb negligible energy at the selected frequency and so do not significantly diminish the energy efficiency of the lamp.
REFERENCES:
patent: 3662140 (1972-05-01), Jones et al.
patent: 4060778 (1977-11-01), Hefni et al.
patent: 4069456 (1978-01-01), Bensussan et al.
patent: 4359668 (1982-11-01), Ury
patent: 4716389 (1987-12-01), Gawronski et al.
patent: 4859906 (1989-08-01), Ury et al.
patent: 4894592 (1990-01-01), Ervin et al.
patent: 5070277 (1991-12-01), Lapatovich
patent: 5113121 (1992-05-01), Lapatovich et al.
patent: 5227698 (1993-07-01), Simpson et al.
patent: 5361274 (1994-11-01), Simpson et al.
patent: 5404076 (1995-04-01), Dolan et al.
patent: 5448135 (1995-09-01), Simpson
patent: 5504391 (1996-04-01), Turner et al.
Fusion Lighting Inc.
Philogene Haissa
Wong Don
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