HID is High intensity Discharge high-pressure gas discharge lamp in abbreviation, it can be called heavy metal lamp or xenon lamp.
Its principle is anti-ultraviolet radiation in the UV-cut crystal quartz glass tube within a variety of chemical gas filling, in which the majority of HID (Xenon) with iodide and other inert gases, and then through a turbocharger (Ballast) the car on 12 volts DC voltage transient pressurization to 23,000 volts of current through the high amplitude excitation of xenon gas inside the quartz tube e-free, in the light created between the two electrodes, which is the so-called gas discharge.
Generated by the xenon arc white super-light, light color temperature can increase the value of a similar day of sun light, HID’s amount of current required only 3.5A to work, it has three times the brightness of traditional halogen light bulbs, 10 times longer than traditional halogen bulb’s service life .
First, the three times output brightness of halogen lamps; that we need an example: If the Audi A6 is equipped with 55-watt H7 halogen high beam can only be issued by 1500 lumens, but if a power of 35-watt xenon lamp is able to issue Up to 3200 units of luminance.
Second, 1 / 2 the energy consumption; Xenon lamps provide the equivalent of three times the brightness of halogen lamps while saving nearly half of energy. In other words, if the use of a conventional car, halogen headlights, and its power mostly in between 50W ~ 70W, while the change if more bright Xenon lamp, only need to 35W is enough.
Third, nearly seven times the service life of halogen lamps; As already mentioned, halogen light-emitting principle is caused by a tungsten filament heating, while the tungsten filament in the long term there will definitely be blown under high temperature damage, so they are the life of 200 ~ 300 hours or so. The xenon lamp current to stimulate the use of luminous gas, basically does not produce high temperature, so long as one of the xenon have not run out, it could have been a normal light, thus their service life has been greatly extended. Now life xenon lamp has reached 2000 hours, this figure would mean that it can accompany vehicle’s life. Insofar as this point, xenon lamp is worth its high price.
In addition, xenon lamp apart from the above-mentioned three outstanding merits, it is due to a higher color temperature light, so light color closer to sunlight, so even higher brightness, but it is not eye-opening, which at night to protect pedestrians and other drivers are not interfering with the conduct is also very important!