When we buy a car, the most easily overlooked configuration may be the headlights, because when we go to the 4S store to choose a car, it is usually during the day. The headlight experience can only be at night. Especially when some people buy a car, when they see the lights of other people's cars are very bright when they are coming to the car, and their lights are not clear, they often realize the importance of the lights.
The research and development and application of automotive lighting technology are synchronized with the continuous iteration of automotive technology. From halogen headlights, to xenon headlights, to LED headlights that are now increasingly popular. Perhaps after 5 or 10 years, laser headlights may become the standard for mass-produced cars. When the xenon lamps that began to appear only in the 1990s were not fully popularized, LED headlights appeared quietly; just when the LED headlights had a little success, laser headlights came. This can't help but make people blame technology change too fast, if one is not careful, the new patent will become obsolete.
At present, laser headlights only appear on luxury brand models. For ordinary consumers, they are still "air castles". So in terms of technology, are laser headlights really so good comparing to LED headlight? Let us analyze the advantages and disadvantages one by one, you will know the answer.
The Chinese name of LED is actually called a light-emitting diode, which was invented in the 1960s. The principle of LED lighting is to use a solid semiconductor chip as a light-emitting material, and the carrier recombination causes photon emission to directly emit light. With the popularity of LEDs, car companies have started to use LEDs as light sources for daytime running lights, replacing halogen bulbs, and setting the width indicator lights and daytime running lights separately. Due to its beautiful appearance and high-cost performance, it has become a powerful weapon in China. Many consumers do not even have daytime running lights, so they simply do not consider this model. In fact, the daytime running lights are not used to force, but to allow other cars and pedestrians on the road to recognize your presence at a glance, thereby improving driving safety. Different countries will make statistics on the use of daytime running lights. As a result, at least 3% of traffic accidents will be avoided. In some areas, this data can even rise to avoid 5%-12% of traffic accidents. Because of this, the European Union also mandated that all passenger cars and minivans sold must be equipped with daytime running lights as early as a few years ago.
The laser headlights can illuminate a range of 600 meters in front of the irradiation distance, while models with LED high beams can only reach 300 meters. This setting also allows car owners to obtain better safety in sparsely populated areas. Laser headlights control future trends. Audi and BMW have publicly competed to showcase their laser headlights. From the current actual situation, the biggest disadvantage of laser headlights is that the cost is too high, which is not conducive to popularization. If the problem of high laser lamp cost can be solved, then the laser headlamp is likely to become a popular configuration in the future automobile industry. Audi uses a combination of laser lights and LED lights, and uses the advantages of strong divergence of LED lights and low divergence of laser headlights so that they can assume different responsibilities and play the role of fish and bear. The effect of both palms.
Summary: Although laser headlights have more advantages than LED headlights, the cost is the biggest constraint on their popularity. Compared with LED headlights that are gradually popularized on models of 150,000 yuan, laser headlights can only be used in luxury brands. Used in high-end models, there is still a long distance from the real "with the people".
The killer of LED headlights is not the lamp itself, nor is it just beautiful. According to statistics, 22% of traffic accidents occur under poor visibility, and most of the accidents are due to the limited width and distance of the vehicle's lighting and the dim color of the lighting light, and the driver cannot respond in time. Car lighting is very important for car safety. LED safety and intelligent control will be widely used.
The headlight follow-up steering function is very practical, it can improve driving safety. When the vehicle is turning, the headlight lights will automatically translate to the steering side to illuminate the dim environment. Drivers can see pedestrians or obstacles in the dark environment ahead. In addition, the intelligent headlight system like Audi can also automatically distinguish pedestrians, and the pedestrian flashing lights and Mercedes-Benz smart headlights will automatically reduce the brightness when they encounter high-reflectivity street signs. These are all along with the popularity of LED lights The headlight technology that was born may have a greater "show-off" component, but it cannot be denied that this is a configuration that is both practical and safe. Once it is popularized, it will no longer be blinded by others' high beams.
Statistics show that the global automotive lighting market increased by 5.8% in 2015 compared with 2014, and the total amount is close to 23 billion US dollars. By 2020, with the outbreak of new energy vehicles, the automotive lighting market will grow to 30 billion US dollars. In 2020, the global automotive LED lighting market is expected to exceed 10 billion US dollars, and the penetration rate will be increased to about 30% by the headlight market.
The development of technology will never end. LED headlight technology is also a technology that has emerged in recent years. The reason why LED headlights are brilliant and quickly occupy the market is that they are beautiful, safe, and practical, and the price is more "grounded" than laser headlights. Most of the cars running on the street are ordinary halogen lamps, and the more advanced models are equipped with xenon lamps and LED lamps. At present, the only equipment equipped with "laser headlights" is the BMW 7 Series 40 and above. There is no need to over-obsess over cutting-edge technology when choosing a car. At this stage, I think the most tempting is the LED headlight, which has low energy consumption, high brightness, beautiful shape, energy-saving, and environmental protection. Most importantly, the price at this stage is not as high as the laser headlight.