Incandescent lamp source utilizing an integral cylindrical trans

Details Incandescent lamp source utilizing an integral cylindrical trans Incandescent lamp source utilizing an integral cylindrical trans

1983-08-01

1985-05-14

Kellogg, Arthur

Electric lamp and discharge devices

With gas or vapor

Incandescent filament lamp

313580, 313573, 313634, H01K 134

Patent

active

045174911

ABSTRACT:
An improved incandescent lamp comprising an inner envelope disposed within an outer envelope is disclosed. The inner envelope contains a halogen gas along with a relatively high pressure efficient fill gas. The inner envelope houses a tungsten filament which is partly surrounded by a separate light-transmissive cylinder. The separate cylinder has on one of its surfaces a selective infrared reflective filter capable of efficiently operating at a temperature range of up to and including about 950.degree. to about 1050.degree. C.

REFERENCES:
patent: 3250934 (1966-05-01), Peterson
patent: 3624444 (1971-11-01), Berthold et al.
patent: 4017758 (1977-04-01), Almer et al.

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