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Halogen tubes are a type of lighting fixture that utilizes halogen gas to produce light. These tubes typically consist of a tungsten filament encased in a quartz or high-temperature glass tube filled with halogen gas, such as iodine or bromine. When electricity passes through the filament, it heats up and emits light. The halogen gas helps to recycle evaporated tungsten back onto the filament, extending its lifespan. Halogen tubes are known for their bright, white light output, high color rendering index (CRI), and compact size, making them popular for various applications such as task lighting, automotive headlights, and stage lighting. However, they are less energy-efficient compared to LED alternatives and can generate significant heat during operation.