You should know about the lights
Everyone cares about the car headlights, not only determines the car's face value, but also affects the comfort of the car in the future. Car technology changes can not be the eye of the car - lighting systems, from the most common halogen, advanced xenon headlights to new forces LED, technology sense of the laser light, then what are their advantages and disadvantages? How should four different forms of headlights be chosen? Today we will talk about the car headlights with you.
First of all, the halogen lamp, Edison's story of the invention of the lamp, no more, the great inventor, Mr. Edison, after thousands of attempts, finally found a material - tungsten wire, on the electricity, can light up, which is the prototype of the incandescent lamp. But the incandescent lamp has a fatal defect, although tungsten wire is bright, but the brightness will be limited by the melting point of tungsten wire, and the tungsten filament will volatilize at high temperature, coagulate on the shell, cause the bulb to hair and affect the life. Obviously, the incandescent lamp can not be directly used in the car. At present, the halogen lamp is commonly used in the automobile. It is an upgraded version of the incandescent lamp, adding halogen elements to produce a chemical reaction between the halogen elements and tungsten wire. The halogen lamp can not only improve the brightness, but also have a longer life. When we observe the vehicles running on the road at night, nine times out of ten the headlights are yellow halogen headlights. From the point of view of the effect, halogen headlamps cause the color of the light to be warmer and yellow because of the low color temperature. In the case of dark light, the halogen halogen lamp is not so conspicuous as xenon lamp, but there is no problem in satisfying the normal use at night. Features: the structure is simple, the manufacturing cost is low, the near light brightness is still available, the light is soft, the light is even, the brightness of the far light is poor. Because the light is yellow, the penetration effect in the rain and fog weather is good. But the overall brightness is low and the service life is short, which is the biggest drawback of halogen headlamps.