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Car headlamp assembly product information

A car headlamp assembly is an important safety feature of automobiles, which provides illumination for nighttime driving and inclement weather conditions. The headlamp assembly is an important part of the overall automobile lighting scheme, providing forward light for safe visibility when driving. A car headlamp assembly consists of the entire one-piece unit that holds the lamp, bulb, lens and frame. The car headlamp assembly is positioned in the front of a vehicle, on both sides, to provide illumination on the left and right sides when driving.

The headlamp assembly is one separate unit that is typically mounted on the front grille of automobiles, held in place by clips and screws. The frame holds the lamp or bulb and the lens covering. The assemblies can be replaced as a unit or the individual bulbs can be replaced when needed. The bulb in a headlamp can be of the older tungsten style incandescent bulb or halogen light bulb. Older headlamps are sealed that can’t be replaced by a bulb. Sealed headlamps can be found on older automobile models.

The halogen bulb will provide brighter illumination than the incandescent bulb. Newer lighting technologies have developed the high intensity discharge bulb or HID, and Xenon headlamps that provide the brightest illumination of all the headlamps, and can be found on new vehicles in the Unites States and Europe. Although safety requirements in the United States and most of Europe require a white light in headlamps, the xenon headlamps give off a slight blue tint which many car enthusiasts prefer.

The lens of a car headlamp assembly is typically of a plastic or polycarbonate material that is usually transparent to some degree which provide for the even distribution of light waves and accounts for any light scatter that may interfere with proper, and safe headlamp illumination. The polycarbonate material is the most durable material for a headlamp lens which withstands the elements of roadway travel that may scratch and pit a headlamp lens. The use of LED lamps on car headlamp assemblies has come into use, but has proved to be more practical for side lights, break lights and directional lights

Most car headlamp assemblies come equipped with bulbs or lamps that have dual functions to emit a brighter light for a high beam and a dimmer light for standard driving. Newer dual use headlamps make use of advanced HID technology to produce an easy transition between use of the high and low beam functions of a headlamp. The low beam headlamps are designed to aim the illumination towards the ground, so as not to create oncoming glare to other drivers on the road. Low beams also provide illumination to the right side in a right side driving country and the left side in a left side driving country. Safety standard in both the United States and Europe mandate that the low beam glare be cut off at the point beyond the initial beam.

High beam lights provide a stark, direct beam of light facing directly forward, which is useful when the road conditions are dark, when there's insufficient street lighting and there’re no other drivers on the road. Since the beam of a high beam headlamp is front facing, with no lateral distribution of the illumination, it will provide dangerous glare to oncoming drivers. High beams are not legally permitted for standard driving on roadways with other drivers present. New technologies take into account the problem of glare from the use of high beams and have developed lamps with a more lateral light wave distribution and they can be found on newer automobiles.

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