citroen Xenon Hid
High Intensity Discharge or HID is a lighting technology that produces more light than ordinary bulbs. HID lights is emitted from an arc between two electrodes in a gas-filled tube which causes a metallic vapor to produce energy. The arc generate extremely high temperatures. HID bulbs illuminate more light than standard halogen bulb, they consume less power and last longer than halogen bulbs. The main types of HID lamps refer to the elements that are added to the gas. These are mercury vapor, metal halide, and sodium. HID lights are rapidly becoming the norm among car drivers because they produce more light than conventional halogen lighting systems (from 200% to 300% more light depending on the type of the bulb), allowing the driver to see more clearly, while at the same time consuming almost half the power. Citroen HID kits make the vehicle more economical to run. The service life period is up to 10 times longer than any ordinary lighting systems. These hard-to-beat kits are the state-of-the-art technology that prevailed over any other conventional automotive lighting systems.Differentiate D1S, D1R, D2S, D2R, D3S, D3R, D4S, and D4R production burner categories . The D stands for discharge, the number is the designator type. The final letter describes the outer shield. The arc within a HID bulb causes considerable short-wave ultraviolet (UV) light, but none of it escapes the bulb, for a UV-absorbing hard glass shield is incorporated around the bulb's arc tube. "S" burners ( D1S, D2S, D3S, and D4S) mean that bulbs have a plain glass shield. They are primarily used in projector-type optics. "R" burners ( D1R, D2R, D3R, and D4R) are designed for use in reflector-type headlamp optics.
