Halogen incandescent lamp with aluminosilicate glass bulb

Details Halogen incandescent lamp with aluminosilicate glass bulb Halogen incandescent lamp with aluminosilicate glass bulb

H - Electricity

01

K

313/118

H01K 1/28 (2006.01) C03C 3/091 (2006.01)

Patent

CA 1142572

Abstract of the Disclosure 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°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°C or higher and an average thermal expansion coefficient of 41x10-7 to 48x10-7 cm/cm/°C at a temperature of 100 to 300°C, and that at least filament-side seal portions of the lead-in wires have a diameter of 0.2 to 0.6 mm.

352628

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