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Halogen will necessarily represent the low end? Comparative analysis of the advantages and disadvantages of various car lights

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Driving at night we all want to have a bright headlight, headlight sense can also be seen as a security configuration, many manufacturers in the publicity when the lights are also used as a selling point, different cars the main difference lies in the light of different light sources, the current mainstream lights mostly uses a halogen, xenon and LED light source.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights

A halogen headlamps

1. Principle
 
A small amount of inert gas is infiltrated iodine (halogen element) in the bulb, the filament evaporated tungsten atoms react with iodine atoms meet, generating iodide tungsten compound, tungsten compound iodide when contacting a hot filament will break down reduced to tungsten and iodine, and so forth cycle.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
2. Features
 
Advantages: costs are among the lowest of the three, the structure is relatively simple and easy to adjust and control the brightness, but in poor visibility when more penetrating, lighting effects will be better.
 
Disadvantages: inefficient, heat, and color temperature than the xenon lamp to be lower, so people's intuitive feel than a halogen lamp and a xenon lamp LED light dimmer, in addition to the halogen lamp life is relatively short.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
Second, xenon headlights
 
1. Principle
 
Xenon lamp is filled with a variety of chemical gases, most of which is an iodide and the like xenon, high voltage amplitude excitation of xenon gas through a quartz tube free electrons between the two electrodes to generate light. The reason why we feel that the xenon lamp is very bright, white light because of super-arc xenon generated by the substantial increase in the color temperature of light.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
2. Features
 
Advantages: xenon lamp current amount of work required is only about 3.5A, but the brightness is also three times more than traditional halogen lamp, and life should be 8-10 times longer than traditional halogen lamps.
 
Disadvantages: Because xenon lamp color temperature is generally very high, in the event of poor visibility weather such as heavy fog light will be suspended in the air and fine particles diffusely reflected, resulting in front of a white effect, but for safety has a very threat, which is the reason a lot of cars use low beam xenon high beam halogen combinations.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
Three, LED headlights
 
1. Principle
 
LED light-emitting diodes in fact, it can convert electrical energy into visible light solid-state semiconductor devices. It is mainly composed of two parts of the wafer, a P-type semiconductor and N type semiconductors, forming a "P-N junction" between them, respectively. When the current through the wire act on the chip, the electron will be pushed to P zone electron hole recombination in the P zone, and then will emit energy in the form of photons.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
2. Features
 
Advantages: long life, at least, can reach tens or even hundreds of thousands of hours of high luminous efficiency and low power consumption at the same time. Compared to halogen and xenon lights really a lot of progress, more and more models are also equipped with LED headlamps group.
 
Disadvantages: The disadvantage to say LED lights in fact only the most obvious one, that is, the higher the cost, so about 200,000 home will rarely use LED headlamps.
 
Halogen will necessarily represent the low end? Advantages and disadvantages of various lights
 
In general the various lights have their own advantages, LED will be the future development trend of the mainstream, more mature technology will allow to further reduce manufacturing costs, and LED headlamps will be better spread.
 
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