The rapid development of science and technology in modern society is astonishing, and the changes of science and technology to life are constantly stimulating our nerves. For example, when we were just familiar with xenon headlights and LED headlights, laser headlights appeared in our field of vision again. And BMW even said in the new advertisement: the era of laser headlights has arrived! Halogen headlights are still civilian heroes. Although halogen headlights have been used as lighting sources for automobiles for a long time, they are still used for lighting in low-end models. Because the technology is quite mature and the structure is simple, the manufacturing cost of halogen headlights is already quite low, and the use cost in the future is also very approachable. However, the disadvantages are also obvious: bulbs have low service life, low color temperature and low luminous efficiency, and most of the electric energy will be converted into heat energy and wasted, so people have been looking for new light sources for vehicles. Speaking of which, I wonder if you still remember the headlight stickers that were popular many years ago? The light filtered out by several translucent blue stripes is finally found to be invalid, but it can be seen that people have an urgent desire for improvement in traditional halogen headlights. High cost hinders the promotion of xenon headlights. Xenon headlights used to be one of the symbols of automobiles. Although they have been down to mid-range models, they are still one of the more advanced configurations. Compared with traditional halogen headlights, xenon lamps have obvious performance advantages. They can not only provide various color temperatures of 4000K to 12000 K, but also greatly improve brightness and reduce energy consumption. Since xenon lamps emit light from gas and no filament exists, their service life has doubled. However, the shortcomings of xenon headlights are also prominent, such as complex structure, high cost and expensive maintenance, which also hinders its large-scale application in the automotive field to some extent. LED headlights are lowering their social status. In the automotive field, LED light sources were originally used as brake lights and daytime running lights for vehicle models, but soon, technological progress solved the bottleneck of LED brightness, audi took the lead in applying it to car headlights. This trend is developing rapidly, and the new generation of Mercedes-Benz S-Class sedan has replaced all the light sources on the car with LED. What is even more gratifying is that LED is no longer exclusive to models by virtue of its cost advantage. The ninth generation Accord and Jed, which were listed not long ago, are also equipped with LED headlights, and this is the first time that LED headlights have been used in automobiles, but in just a few years. The future will be the world of laser headlights. After LED headlights and xenon headlights, laser headlights are once again called a reasonable next step by the industry. It should be noted that the laser headlights on the car are not the kind of dazzling laser in the movie, it is not even dazzling at all. The design principle is that the blue light of the laser light emitting diode will run through the fluorescent phosphor material in the headlight unit and convert it into a diffused white light, which is bright and good for eyes. Importantly, laser headlights will save more energy. Traditional LED headlights have a luminous intensity of 100 lumens per watt, while laser headlights have reached 170 lumens per watt. BMW recently announced that it will apply this laser lighting technology to the next generation i8 and will further develop laser headlight technology across various models. Related highlights: there is no need to unify LED lighting standards. Data show that LED production capacity is currently shifting to China, with about 50 LED packages and more than 60 LED applications being carried out in China. Therefore, some localities and some associations quickly formulated and introduced LED technology quality standards to seize the market. At present, LED industry standards in many places are formulated spontaneously by enterprises, while industry standards formulated by enterprises are uneven, even causing confusion of one standard at a time. This situation will also directly affect the field of automotive lighting.