Halogen lamp

A halogen lamp is a special incandescent lamp.
It has an incandescent filament, also called a filament, a halogen additive to the filling gas and also a greatly reduced lamp bulb made of quartz or hard glass.
When the lamp is on, tungsten atoms vaporize and combine with the halogen in a slightly cooler zone near the bulb wall.
The halogen is released at a bulb temperature above 250°C.
Due to the high temperature, the tungsten halide formed cannot be deposited on the bulb wall, but retains its vaporous consistency. In the vicinity of the filament, the tungsten halide molecules split again and settle on the filament. The halogen, on the other hand, returns to its cycle.
It is precisely because of this circuit that the blackening of the bulb by deposits is prevented and the glow wire is restored at the same time.
A tungsten-halogen cyclic process is created, which constantly regenerates the filament and thus also extends the service life of such a halogen lamp.
It is characterized above all by advantages such as a high light output, very small dimensions, a long service life and a constant luminous flux.
They are also increasingly being used in living areas, but are not used in photography, in projectors, floodlights and motor vehicle headlights.