Post: Low beam

Low beam
refers to the light group set in the headlight to illuminate the near side of the vehicle (usually the illumination distance is 30-40 meters), with the characteristics of wide illumination range (160°) and short illumination distance. According to the light source, it is divided into halogen, xenon, LED and other types.
Halogen headlight
Halogen lamp refers to the reaction between the tungsten filament of the incandescent lamp and the halogen element by filling the halogen gas in the incandescent lamp. This principle is used to extend the life of the filament and can adapt to higher operating temperatures. Halogen lamps have a simple structure, low cost, and strong penetration.
Disadvantages: The luminous efficiency is not as high as other light sources, the halogen irradiation distance is limited, and the light is not easy to gather.
Xenon headlight
Xenon lamps are also called high-pressure gas discharge lamps. There is no filament inside the bulb, but high-pressure inert xenon gas is rushed into the bulb. Under high pressure, the xenon gas will be ionized and generate light at the two poles of the power supply. The brightness of xenon lamps is more than twice that of halogen lamps, with outstanding lighting effects, long life, low power consumption, and can improve the illumination field and reduce nighttime driving accidents.
Disadvantages: Xenon lamps are more expensive to manufacture and maintain than halogen lamps; xenon needs to reach a certain temperature to emit bright light and has a delay.