halogeenlampe

A halogeenlampe, also known as a halogen lamp, is a type of incandescent lamp that utilizes a halogen gas to improve its lifespan and luminous efficacy compared to traditional incandescent bulbs. Inside the lamp, a tungsten filament is heated to a high temperature by an electric current, causing it to emit light. The halogen gas, typically iodine or bromine, is enclosed in a quartz envelope that can withstand the high temperatures.

The key principle behind the halogen lamp's operation is the halogen cycle. At high temperatures, tungsten evaporates from the filament and reacts with the halogen gas to form a tungsten halide compound. This compound then circulates within the lamp and, when it comes into contact with the hot filament, the tungsten is redeposited back onto the filament, and the halogen gas is released. This regenerative process helps to prevent the filament from thinning too quickly, thus extending its life.

Halogen lamps are known for producing a bright, white light that is closer to natural daylight than standard incandescent bulbs. They also offer good color rendering. However, they are less energy-efficient than modern LED or fluorescent lighting, as a significant portion of the energy is dissipated as heat. Despite this, their compact size, instant on/off capability, and excellent light quality have made them popular for various applications, including spotlights, automotive headlights, and general lighting in some residential and commercial settings.