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A xenon arc lamp is a highly specialized type of gas discharge lamp, an electric light that produces light by passing electricity through ionized xenon gas at high pressure. It produces a bright white light to simulate sunlight , with applications in movie projectors in theaters , in searchlights , and for specialized uses in industry and research.
A krypton long arc lamp (top) is shown above a xenon flashtube. The two lamps, used for laser pumping , are very different in the shape of the electrodes, in particular, the cathode (on the left). An arc lamp or arc light is a lamp that produces light by an electric arc (also called a voltaic arc).
Xenon lamp may refer to: Xenon arc lamp; Xenon flash lamp; An incandescent light bulb filled with xenon gas to improve life span or efficiency; A metal halide lamp that is used in automotive headlights
Xenon short-arc lamps; The light-producing element of these lamp types is a well-stabilized arc discharge contained within a refractory envelope arc tube with wall loading in excess of 3 watts per square centimetre (19 W/in 2). Mercury-vapor lamps were the first commercially available HID lamps.
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]
While not as violent as the explosion of a xenon short-arc bulb, they require caution. As a result, HMI lamps should not be used beyond half of their rated life, [ citation needed ] and care should be taken with larger lamps when striking (turning on the lamp), as a lamp is most likely to explode within the first five minutes of striking.