Electrodeless arc tube with stabilized condensate location

Details Electrodeless arc tube with stabilized condensate location Electrodeless arc tube with stabilized condensate location

1992-12-21

1994-12-13

Mis, David

Electric lamp and discharge devices: systems

Pulsating or a.c. supply

Induction-type discharge device load

315344, 313573, 313234, 313607, 313638, H05B 4124

Patent

active

053732162

ABSTRACT:
An electrodeless high intensity discharge (HID) lamp arc tube having a stabilized condensate location. The arc tube contains a predetermined location or distortion on the inside surface of the arc tube. The distortion may be a protrusion on the inside surface of the arc tube formed during the arc tube forming process. In operation of the lamp, the non gaseous dose remains condensed substantially in the cold spot region formed by said protrusion so that the arc tube walls remain clear for maximal light output, and the arc tube remains stable and efficacious to substantially higher power than is the case for arc tubes without the distortion.

REFERENCES:
patent: 4095142 (1978-06-01), Murayama et al.
patent: 4783615 (1988-11-01), Dakin
patent: 5021704 (1991-06-01), Walker et al.
patent: 5150015 (1992-09-01), Heindl et al.
patent: 5151633 (1992-09-01), Farrall et al.
patent: 5157306 (1992-10-01), Witting

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