H - Electricity – 01 – K
Patent
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
Honda Kiyokazu
Nieda Yasuhiro
Shinada Hidehiro
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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