Halogen Lamps

A halogen lamp is an incandescent lamp that contains a small amount of one of the five non-metallic elements from Group 17 of the Periodic Table, known as halogens. Halogen lamps work on the same principle as standard, incandescent bulbs and are available from suppliers at productpilot.com. These bulbs emit light as the result of a ductile tungsten filament being heated to a temperature of over 3,000°C in a glass bulb containing halogen gas, usually bromine or iodine, at a pressure between 700 and 800kPa. A typical halogen lamp manufacturer makes the glass bulb from quartz glass, which consists of pure silica, rather than standard glass, because of its high mechanical strength temperature resistance.

The purpose of the halogen gas is to create a reversible reaction, known as the halogen cycle, between tungsten evaporated from the filament and the halogen. The halogen cycle re-deposits tungsten on to the filament, but - more importantly - prevents accumulation of tungsten on the wall of the bulb, so a halogen lamp maintains its luminous output throughout its life. The halogen cycle allows the lamp to operate at increased gas pressure and density which, in turn, means that the halogen lamp manufacturer can make it more compact and lightweight than would otherwise be the case.

The halogen lamp has become a mainstay for film and television lighting, but it is also suitable for use in automotive, commercial display and photographic applications. Typically, halogen lamps have a lifespan between two and five times longer than standard incandescent lamps. However, depending on the application, a halogen lamp supplier on productpilot.com may offer lamps that last tens, hundreds or even thousands of hours.

From the point of view of the halogen lamp supplier, halogen lamps are inexpensive to produce, offer a colour temperature closer to natural light than standard incandescent lamps and switch on, instantly, to full brightness. Productpilot.com provides the perfect meeting place for manufacturers, suppliers and traders.

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