H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 61/24 (2006.01) H01J 61/28 (2006.01) H01J 61/52 (2006.01) H01J 61/54 (2006.01)
Patent
CA 2100450
2100450 9311556 PCTABS00022 A mercury vapor discharge lamp such as a negative glow discharge lamp includes a light-transmitting envelope (10) containing a noble gas fill material. An anode electrode (18) and a cathode electrode (16) are spacedly located within the envelope (10). An amalgam-forming material (30) for regulating the mercury vapor pressure of the lamp is disposed within the envelope (10). In order to increase the mercury vapor pressure and consequently the light output of the lamp at low ambient temperatures, a heating element (38) is disposed within the envelope (10) and in close thermal proximity to the amalgam-forming material (30). A thermostatic switch (40) coupled to the heating element (38) is activated when the temperature adjacent the amalgam-forming material (30) is below a predetermined temperature.
Bouchard Andre C.
Gte Products Corporation
R. William Wray & Associates
LandOfFree
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