Interpretation of the most advanced three kinds of headlight Technology

Although xenon headlamps are still the most mainstream car headlamps configuration, but LED headlamps have begun to enter into more and more people's vision. And very noteworthy is that the application rate of LED lamp is very fast, it is not what the high-end models exclusive configuration, in 2013 a lot of household car will also be introduced in this configuration, such as a new generation of Audi A3, a new generation Mondeo, the new generation X-Trail and so on, not only that, BMW is the first to be more advanced than the LED laser headlights into production car headlights. In addition to the lamp itself, the combination of lamps and other technologies is also a major aspect of the latest headlight technology, today we are going to analyze the most advanced technology of the three headlamps.

BMW I8 laser headlight system

The biggest aspect: illuminance reached 170 lumens per watt, the length of only 10 microns, the distance is the traditional LED irradiation distance of two times

I8's headlights seem to have nothing to do with the LED headlights, but in fact it uses a set of advanced laser headlights two

BMW I8 headlight design is a major highlight of the vehicle, not only is the slim shape is very special, more important is the technology behind it. The headlights have not now popular full LED headlamps, and it has been the use of the more advanced laser headlights, as long as the country where the law allows, I8 can match this laser headlights (the laws of the United States temporarily not allow vehicles using laser headlights).

The laser is brighter than LED, the distance is farther, but the size is smaller

From the appearance point of view, I8 laser headlights seem to be now widely used in all LED headlights are not much different, but technically, the two have a huge performance gap. Compared to LED technology, laser technology is the biggest increase in its integration, it is only one percent of the volume of LED, but it has a brightness of 1000 times. BMW I8 equipped with this laser light to reach 170 lumens per watt, and the traditional LED per watt, compared to 100 lumens, an increase of more than seventy percent brightness. The irradiation distance is two times of the traditional LED. Dimensions, the length of the laser diode is only 10 microns, times shorter than the current small LED. This means that the use of laser headlights car didn't like the traditional way to set aside a large area of the automobile headlamp space, designers can play more freely, so we see that I8 has a more "eyes", in good out of a bandbox square design also echoed the latest BMW angel eye shape.

From left to right, the comparison of the distance between the xenon headlamps, LED headlamps and laser headlights

In addition to the extremely compact volume and high light brightness, laser light source also has the characteristics of high stability, only about half of the needs of the LED lamp group and save energy consumption, this can still save fuel consumption. Laser headlights small size, lower energy consumption, but also more bright features and stressed that the energy saving I8 sports car complement each other.

No harm to the human eye, but also in line with the human visual habits

The performance of laser headlights is indeed a great advantage, but as everyone knows, because of the laser has the characteristics of energy accumulation, it will also pose a great damage to the human eye, but the laser headlights BMW has nothing to worry about this point. The reason is that BMW laser headlight is not directly to the laser beam toward the front of the vehicle emission, but first with three laser beams into a reflection lens group, after reflection, the laser energy will gather in a yellow phosphor (yellowphosphorus) lens, the yellow phosphorus by laser excitation, will emit strong this beam of white light, white light shines on a back reflector, and finally to the front of the vehicle emits a bright white light. And this white light, the eyes of people and animals will not cause irritation or injury, but also the brightness of laser headlamps are studied, the effect of irradiation in line with the human visual habits. Finally, the BMW I8 is equipped with a laser light is not completely based on the laser, because it is still based on LED, is the only light in the laser as a light source base.

Laser headlight internal assembly

Of course, BMW's laser head is definitely not for the I8 hybrid sports car and specially developed, as early as in 2011, BMW began to invest in the application of laser light in civilian vehicles. The advantages of laser headlight is very attractive, it is energy saving, small size, can emit more bright light characteristics, not only has the advantages of environmental protection and safety, and the designer can now design front headlight design that nowadays vehicles can have a greater breakthrough compared in the headlights design. I believe this is equipped with laser headlight I8 on the body is just the beginning, BMW future will this technology configuration on its other cars, and a heavy vehicle laser headlights BMW would be the 7 series of new generation.

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