HID Xenon bulb refers to a high-pressure gas discharge lamp that is filled with an inert gas mixture including xenon gas and has no filament that halogen lamps have. Xenon lamps for lamps and outdoor lighting. HID Xenon bulbs are also called HID gas discharge headlamps in the field of automotive lamps. It replaces the traditional tungsten wire with high-pressure xenon gas wrapped in a quartz tube to provide higher color temperature and more concentrated lighting.