Improvements in quartz infra-red lamps.

摘要

An infra-red lamp consists of a quartz tubular envelope (1) filled with a halogen gas and sealed at each end with a respective pinch seal (2). A coiled coil tungsten filament (8) is supported within the envelope (1) and is electrically connected, via a molydenum foil strip (4) and lead wires (6) within the pinch seal (2), to a connector (5) for connection to a power supply. The coiled coil filament (8) is supported by a number of tungsten wire spirals (9) spaced along the length of the filament (8), each spiral (9) being intermeshed with the filament (8).