DS7 declared war on Audi, a "lighting factory", and headlight design became the most competitive weapon in the automobile industry.

Audi is a brand that plays headlights to the extreme, and is named as "Four Ring Lamp Factory". Jokes about Audi headlights are endless. "When I was waiting for a red light at the intersection, the other Audi took me for more than ten seconds. When I got home, my wife said I was' tanned'. " There is also "Audi in our village turned on the high beam at night, and as a result, the whole village got up and worked." This shows that, in general, Audi's headlights are indeed recognized as the top spot in the industry, and the headlights and taillights on the Audi A8L are difficult to copy.

However, when the high-end brand DS7 from France went public, many people in the industry began to worry that Audi's status as a "four-ring lamp factory" was not guaranteed. Because the violet headlights that can rotate 180 on DS7 really make the world sigh the design ability of the French. Whether it is a sense of design or ceremony, DS7 headlights are definitely the most powerful competitors of Audi A8L headlights. I want to ask you in this small series, do you know car headlights? Next, let's talk about four kinds of car headlights that are common in the automobile market, and the characteristics of these headlights. Let's take a look at the ceremonial headlights on DS7 first.

Halogen headlamp

Halogen headlights are a common headlight configuration in many family cars with relatively low prices. Halogen headlights are also the lowest headlight configuration in the current automobile market. Its headlight light source is the most common halogen bulb, which we used to call "candle lamp", and its color is mainly yellow. Since it is called "candle lamp", the lighting effect can be imagined.

Many car companies have also made a very pleasing design on halogen headlights, that is, installing a lens in front of the halogen bulb, usually a "fisheye lens". From the optical point of view, the refraction effect of light is enhanced. The lighting effect of the whole halogen headlight is improved, but halogen headlights are halogen headlights, and the essence of flower making will not change.

Xenon headlights (HID)

Xenon headlights are much better than halogen headlights. At present, many automobile brands are also equipped with xenon headlights on low-end family cars. The luminous principle of xenon headlights is to use electrons to impact xenon molecules, so that xenon molecules discharge and emit light. In principle, it is not difficult to see that xenon headlights take some time to shine, so xenon lamps are very easy to judge. After turning on the light switch, the xenon lamp always has a short delay in lighting.

The light color of xenon headlights is white, and a lens will be installed in front of the light source to increase the irradiation effect of the headlights. At present, in the automobile refitting market, many light sources of halogen headlights will be refitted into xenon headlights. After all, the irradiation effect is much better.

LED headlight

LED headlight is a widely used headlight light source at present. The biggest feature of LED headlights is energy saving, high light intensity and strong penetration. LED light sources have existed in daytime running lights for many years. But in recent years, it has been widely used in headlights. Due to the high plasticity of the light source of LED headlights, people will see various design types of LED headlights appear. For example, the LED headlights of DS7 mentioned at the beginning, and the LED headlights of Audi and BMW are also unique.

However, LED headlights are energy-saving and have outstanding lighting effects. However, LED headlights also have some disadvantages, that is, heat dissipation. LED headlights generate a lot of heat when they shine. If many models are equipped with LED headlights, they will basically add a heat sink, which is one of the reasons why many LED headlights in the car will only appear on the top models.

Laser headlight

Laser headlights were only mentioned in the last two years. In my impression, it should be that BMW i8 first used laser headlights. At that time, BMW gave this laser headlight a very nice name-Angel's Eye. At present, in the automobile market, BMW 7 Series, Audi A8 and other models are equipped with matrix laser headlights. The biggest advantage of laser headlights is that its irradiation distance kills all headlight light sources on the market at present. Laser headlights can illuminate the distance of 500-600 meters ahead in good weather, which can be said to be "night is like day". So laser headlights have become synonymous with luxury cars.

Summary: The light source in car headlights has experienced the historical evolution from ordinary light bulbs to halogen light bulbs, to xenon headlights, LED headlights, and finally to laser headlights, which can be said to be a journey of our human scientific and technological progress. The advanced degree and high-tech content of the car are its charm. Today's automobile design is based on excellent technology and technology. A steady stream of excellent designs is presented to the world. Just like Audi, which has been playing with lights the most, competitors have begun to declare war on it, and the fierce competition in the automobile industry can be imagined.

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This article comes from car home, the author of the car manufacturer, and does not represent car home's position.