Since 1898, people have used electricity for car headlights and taillights. After more than 100 years of development, car headlights have gradually formed a complete system. With the advancement of technology, car lights have experienced halogen, xenon, LED The transitional pattern of lasers, various types of lighting products have various limitations, everyone should not blindly listen to advertising, the following author will introduce the product characteristics and advantages and disadvantages of various automotive lights.
The history of the application of halogen headlights in cars can be traced back to the 1970s. In fact, it is an upgraded version of incandescent lamps for home use, except that halogen elements are added, the brightness is increased by 1.5 times, and the life is increased by 2-3 times. Until a few years ago, this kind of light was still the most common type of headlight light source in cars produced by major auto manufacturers. As the standard configuration of low-cost cars, although halogen lamps have shortcomings on some products, because of the relatively low price, it is still a very affordable option for some economic models with limited costs, but this light source is not recommended for everyone. .
Because of today's development, more and more models have gradually abandoned the use of halogen headlights, and major brands have begun to popularize the application of xenon headlights in low-end models. Xenon lights are three times brighter than halogen lights, but their energy consumption is only Two thirds of halogen lamps. However, the response speed is slow, and it takes about three to four seconds to light the headlights to achieve the best brightness. However, the principle of the xenon headlight determines that the direction of the light source is uncertain. Basically, it is necessary to install a lens to make the beam irradiation direction more consistent.
Laser headlights are basically a fully upgraded version of LED light sources
LED believes that those who pay attention to the display will not be unfamiliar. The backlight of today's liquid crystal displays is LED. LED can directly convert electrical energy into visible light. The conversion efficiency is very high. All LED light sources sound like a tall one. thing. More and more luxury brands are now using full LEDs as the light source for headlights, and after the market advances, more brands are also delegating LEDs to the small car market. In the future market trend of energy saving and environmental protection, LED light source is likely to become the mainstream.
The energy consumption of the LED light source is only 1/20 of the halogen lamp, and the life span can reach more than 100,000 hours. Everyone may not be clear about the concept of 100,000 hours. Basically, your car will be scrapped and the lights can be used normally Compared with xenon headlights, they are smaller in size and can light up instantly, which is very safe for driving, but the requirements of LED light sources for heat dissipation and ventilation are also very high.
Laser headlights are currently the most cutting-edge technology in automotive lighting. All aspects are basically a comprehensive upgrade of LED light sources. They are unique in terms of irradiation distance and can reach a range of 600 meters ahead. Irradiated to 300 meters. At present, the only drawback may be that the cost is too high to be popularized. The above four types of headlights are a rough introduction for everyone.