Electric lamp and discharge devices – With support and/or spacing structure for electrode and/or... – For plural electrodes of discharge device
Patent
1980-05-14
1982-12-28
Gensler, Paul L.
Electric lamp and discharge devices
With support and/or spacing structure for electrode and/or...
For plural electrodes of discharge device
313222, 313252, H01J 1716
Patent
active
043664091
ABSTRACT:
A halogen incandescent lamp performing halogen cycle in operation, comprising a bulb formed of light-transmitting material in which gas containing halogen atoms and inert gas are enclosed, a tungsten filament with working temperature of 2,800.degree. K. or more contained in the bulb, at least a pair of lead-in wires connected to or integrally formed on both ends of the tungsten filament, respectively, and having a part sealed in the bulb, the lamp characterized in that the light-transmitting material is aluminosilicate glass having a strain point of 660.degree. C. or higher and an average thermal expansion coefficient of 41.times.10.sup.-7 to 48.times.10.sup.-7 cm/cm/.degree.C. at a temperature of 100.degree. to 300.degree. C., and that at least filament-side seal portions of the lead-in wires have a diameter of 0.2 to 0.6 mm.
REFERENCES:
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patent: 4074167 (1978-02-01), van den Broek et al.
patent: 4105826 (1978-08-01), Thomas
Honda Kiyokazu
Nieda Yasuhiro
Shinada Hidehiro
Gensler Paul L.
Tokyo Shibaura Denki Kabushiki Kaisha
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