Mirror condenser lamp

H - Electricity – 01 – K

Patent

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Details

CPC

313/85

IPC codes

H01K 1/28 (2006.01)

Type

Patent

Patent number

CA 1071289

Description

ABSTRACT: A mirror condenser lamp with a tungsten filament in which the lamp vessel has a rotationally symmetrically curved mirrored wall portion, a rotationally symmetrically curved transparent wall portion and a cylindrical wall portion ex- tending from the line of intersection of the two curved portions. The lamp vessel contains an inert gas and a halogen at a pressure of more than 1 atmosphere and the lamp vessel con- sists of a halogen-resistant hard glass having a softening temperature of at least 500°C. The inside of the wall of the lamp vessel, during operation, assumes a temperature at which tungsten-halogen compounds are volatile. - 11 -

Application Number

274305

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