High Intensity Discharge lights also known as HID are well spread and popular all over industry of automotive lights and vehicles equipment. These lights offer multiple features beating it`s competition with ease. Technology of the lights is based on xenon gasses and their mixtures with metal salt particles. Lights are made up out of two bulbs and two igniters as well as core of the whole system the ballast. HID Lights are taking over the market and getting more and more popular each day. High price and technical on-read illegality has already become distinctive feature for nowadays drivers.
The main difference between brand new, xenon based, HID lights and standard halogen lights is filament absence in case of HID lights. These lights don`t need filament as the ether which transfers the beam of light is xenon gas itself. Main classification is done by light color temperatures, precisely Kelvin degrees. Each temperature range responds to different color of light, as temperature range goes from 4,300 Kelvin degrees reaching the peak at 30,000 Kelvins. Colors vary from Crystal White to Purple and color temperatures often met on-road is between 5,000 and 6,000 Kelvins, these temperature refer to White and Crystal White color . These temperatures are mostly used from simple reason, because these colors refer to noon daylight color and at this spot human reacts the fastest and get the best contrast sight. HID kits with color temperature over 10,000 Kelvins are usually forbidden and are allowed only at off-rode activities and as such are used on car shows and in car racing arenas. Each HID kit distributer is obliged to use the markings on the outer lens of a headlamp with the light source which is used in headlamps. DOT marking should appear on your lens as proof that your HID kit complies to regulative of Department of Transportation.
Another classification is done on bulb basis and beam configuration and this classification has divided HID lights into four large categories. First category is single beam kits and they come in combination of two ballasts and pair of HID bulbs. This category is meant for vehicles that use two separated light systems, low and high beam system, which are independent one from another. In this case HID kit is usually installed on the lower beam system while upper one is still performed by standard halogen light system. Category number two includes low or high beam xenon kits; these usually come with pair of bulbs and a pair of ballasts. Third category is named telescopic one and this one offers full range of high and low beam operations; this is a single kit which switches between operations of low and high beam pattern and comes with two ballasts. Fourth category is a category of bi-xenon HID headlamps containing two pairs of HID bulbs and four ballasts. High intensity discharge headlights are world wide spread product which made a breakthrough on the market right after it appeared on it. This is a technology that is yet to be developed even more.
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