What are the four kinds of car headlamps
, The advantages of halogen: 1. Low cost, the cost of the three is the cheapest 2. The structure is relatively simple, and the brightness is easy to adjust and control, when the visibility is poor but stronger penetration, lighting effects will be better. (But in the case of low visibility can not be too fast, so this advantage is basically ignored) 3. Light uniformity. Disadvantages: 1. luminous efficiency is not high, large heat 2. Brightness is relatively low, the general is now low with the standard car, it is difficult to meet the needs of driving people now. 3. Long life, halogen lamp life is relatively short. Under normal circumstances, the life of a halogen bulb can last about 1000 hours or so.
Xenon headlamps advantages: 1, brightness compared to halogen lamp upgrade more than 300%. 2, no tungsten wire structure also let life longer than the halogen lamp. 3, more energy than the halogen lamp environmental protection, power loss savings of more than 40%. 4, if used in the event of failure, xenon, etc. will not be instantly extinguished, but will gradually darken until extinguished. This allows the driver in the car to have time to cope with the lack of headlamps 1. Poor condenser, and because too bright, easy to shake the opposite of the driver of the vehicle and thus lead to accidents. But now the xenon headlamps basically equipped with lenses, so you can solve the problem. But as far as I know, the Accord's xenon headlamps are not equipped with lenses. 2. penetrating bad, in the fog and snow and ice weather, xenon headlamp penetration is very weak. Delay effect Because the working principle of xenon headlamps, light it takes 2-4s long. At high speed, the speaker is often useless, so the need to use the headlights to "Akira flash" in front of the vehicle, then want to rely on xenon headlamps, it is completely impossible. So some manufacturers as an interface, near the use of xenon, while the high beam is still using halogen.
LED car headlights advantages: a: long life, generally up to tens of thousands or even 100,000 hours. Some people think that if the future of car lights use LED, the entire car will not use the replacement of the lamp. Two: high efficiency, low energy consumption. LED lamp energy consumption for the halogen lamp 1/20. Three: high-quality light, environmentally friendly products are basically no radiation, "green" light source.Disadvantages of a: high cost, a good LED headlamp material to be enough, the choice of light bulbs generally choose imported wick. Light body material, fan, drive will affect the cooling effect. Two: before the popularity of LED car lights difficult, poor heat dissipation, heat treatment is not easy to light failure. Affect the lamp life. So in the choice of LED headlamps when this piece needs to be fully considered. Three: there is no introduction of industry standards, product quality uneven;
Laser headlamps. Advantages: laser headlamps in the irradiation distance can be irradiated to the front of the 600 meters range, while the use of LED high beam models can only be irradiated to 300 meters. This setting also allows the owner in the sparsely populated areas to get better security. Laser headlights hold the future trend. Audi and BMW have been openly competing to show its laser headlamps. From the current actual situation, the biggest disadvantage of laser headlamps is the cost is too high, is not conducive to universal. If you can solve the high cost of laser lights this problem, then, the laser headlamps is likely to become the future of the automotive industry, the popularity of Disadvantages: Although the advantages of laser headlamps more than LED headlamps, but the cost of its popularity is the biggest constraint , Compared to LED headlamps gradually in the 150,000 yuan level models on the popularity of laser headlamps can only be used in the luxury brand of high-end models, from the real "with the people" there is a long distance.
Is currently four: the current ranking should be this: laser headlamps (not popular) --- LED car headlamps (on behalf of the brand: Leixi) --- xenon headlamps (on behalf of the brand: OSRAM) --- Halogen lamp (on behalf of the brand: Philips, OSRAM). Because of the cost reasons, the car factory is generally out of the halogen standard, pre-xenon headlamps as a halogen alternative light source, with the current LED technology is mature and development, and gradually show the alternative halogen and xenon headlamps Potential value.
