In recent years, high-power lasers have become an important driving force in the automotive industry. This industry has extremely high requirements for the quality and reliability of laser light sources. Lasers have the advantages of greater flexibility and easier automation, so they can be well adapted to the needs of industrial development. So what are the specific applications?
- Laser headlight
Nowadays, with the improvement of automobile performance and the popularization of highways, the illumination distance of 200-300 meters of traditional high beams is obviously not enough, so there is the output of laser headlights. Laser headlights are car headlights that use lasers as a light source. The principle of laser headlights is: the blue light of the laser light-emitting diode will penetrate the fluorescent phosphor material in the headlamp unit, converting it into a diffused white light, which is bright and more friendly to the eyes. Laser headlights have most of the advantages of LED headlights, such as fast response, low brightness attenuation, small size, low energy consumption, long life and so on.
Lidar works by emitting, reflecting, and receiving visible and near-infrared light waves, mostly near the 950nm band, to detect objects. Lidar can detect the distance between a specific object and a car during the day or night. Due to the difference in reflectivity, it can also distinguish between the driving lane line and the road surface, but it cannot detect the obscured objects and objects that cannot be reached by the beam, and the performance is poor in rain, snow and fog weather.
- DMS driving monitoring system
Driver monitoring system, that is, driver monitoring system, is an important module in smart cars. Its main function is to monitor the driver’s status through the camera and judge whether the driver is fatigued or distracted, so as to ensure driving safety. Among them, laser speckle imaging technology has been used.