After the emergence of automotive lighting from the Xenon lighting technology, the human headlight lighting process has finally begun to break through and develop. Twice the brightness of ordinary halogen headlamps, energy consumption is only two-thirds, such as daylight-like lighting effects, life expectancy up to ten times that of ordinary halogen lamps - since the early 1990s, helium With its incomparable advantages, headlamps have become the first choice for more and more owners. Xenon headlights greatly increase the safety and comfort of driving, and help to ease the tension and fatigue of people driving at night. Drivers can detect dangers in the first time, so that they can get enough reaction time and greatly reduce the incidence of night accidents.
The German company Hella has always been a leader and innovator in the field of automotive lighting. Since 1992, Hella has been committed to producing xenon headlamps for the European and American markets and has become the dominant market in the European market. After more than ten years of development, the application of Xenon lighting technology in the automotive field is steadily maturing. From the close-up of the low beam headlights, the high beam headlights and the double xenon headlamps, the fourth generation of Xenon ballasts that stimulated the Xenon source has been successfully developed. The performance of Xenon lighting is more and more stable. The prospect of replacing the ordinary halogen lamps in an all-round way is also becoming increasingly clear. At present, Hella has a market share of more than 60% in the field of xenon lighting, and supplies advanced xenon headlamp systems to world-renowned automakers such as Audi, BMW, DaimlerChrysler, Honda, Opel, Porsche and Volkswagen.
In the process of continuous improvement of helium products, Hella's technicians also made some achievements in the design of headlight reflectors. These include the FF free-reflecting surface technology and DE lens technology that have been put into use.
The emergence of FF free-surface mirror technology is closely related to the rapid advancement of electronic computer technology in recent years. Introducing the CAD design concept of the mirror development process, so that each reflection point can be tailored to the ideal light pattern. Thousands or even tens of thousands of computer-calculated reflection points form the free-surface mirror of the headlamp, which reflects the light emitted by the xenon source to the specified illumination area to the maximum extent, greatly improving the illumination efficiency. Headlamps using FF technology no longer require a lens-assisted light distribution. Therefore, the lens of such products can use a completely stripe-free lens to achieve a crystal clear aesthetic.
The DE lens technology draws on the easy-to-understand convex lens concentrating principle. In front of the traditional mirror and bulb, a specially designed convex lens is added. The dual effect of specular reflection and lens refraction achieves an ideal concentrating effect. Therefore, this technology is mostly used for low beam headlamps.
In addition, the super DE technology that combines DE and FF technologies is now used in some of the most advanced automotive Xenon headlamps.
Due to the continuous understanding of the xenon technology by existing car owners and the improvement of the requirements for car lighting, the conversion of the original car halogen headlamps into xenon lamps has also become a hot spot in the market.
At present, there are mainly three different modification methods on the market.
Add Xenon auxiliary light
This method is characterized by not changing the lighting system of the original car at all, but installing the xenon auxiliary lamp as an additional product at the corresponding position on the head or top of the vehicle. This modification is relatively flexible. Users can select suitable products according to the front shape of the vehicle and their own preferences, and choose a reasonable installation location for installation to meet individual needs. Xenon-assisted lamps are mainly high-beam lamps, and the outer diameter is generally as small as 80-90 mm and as large as 200 mm, which can be suitable for different models such as trucks, off-road vehicles and cars. The pencil-light products in the Hella Xenon Auxiliary Lamp can meet the special needs of highway driving and racing driving with a range of more than a kilometer.
The disadvantage of this method is that there are certain size requirements for the front bumper and the grille of the vehicle, which need to be carefully measured before being modified.
Replace the headlight assembly
For reasons of driving safety, in Europe, regulations have clearly stipulated that HID conversion is illegal, only the replacement of the entire headlamp system - that is, the replacement of the headlamp assembly is considered legal, and must also be equipped with a front view Lamp cleaning device and automatic headlamp adjustment device (see ECE-R48 for details). This modification method mainly uses the original Xenon headlamps, that is, the Xenon light source and the specially designed light-viewing mirrors and mirrors, thus becoming an ideal modification method. In this way, the modification is very convenient, generally only need to replace the headlights.
As the world's leading automotive lighting expert, HELLA has developed a variety of models of convertible xenon headlamp assembly products, including Passat B5, Audi A6C5, BMW 5 Series, Mercedes E Series and Golf 4 to meet different Demand.
HID modification
HID modification originated in Japan and was introduced to the mainland from Taiwan and Hong Kong. HID modification is to remove the halogen bulb in the original headlight, replace it with a xenon bulb (including the bulb holder), install a helium ballast and drill holes in the dust cover and lead the harness. Since Xenon bulbs for halogen bulbs such as H7, H4, H3, H1, HB3, HB4 have been introduced on the market, almost all models are available.
However, this method has a great safety hazard: First, since the mirror and the lens of the headlamp are both made for the original halogen bulb, after changing the xenon source, due to the source and focus position The deviation of the new Xenon bulb with the mirror and the lens is impossible to achieve the original effect. Therefore, although the HID modification can improve the illumination brightness of the headlights, it does not produce the required light type. On the contrary, serious negative effects including non-lighting, loss of low-beam cutting lines, and no high beam function have occurred, and the possibility of stunning has increased by more than 100 times. Second, due to changes in the circuit of the original car, once product quality problems occur, it is likely to cause a short-circuit fire.
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