Lidar, also known as LIDAR (Laser Detection and Ranging), is a system that emits a laser pointer beam to detect the location, speed, and distance of a target. It is understood that lidar was originally used in the military field as a target detection and tracking system, and is considered to be a device that is more difficult to be interfered with and detected by the enemy.
Different from cameras and ultrasonic sensors, lidar can accurately determine the shape and position of objects by reading laser reflection data, and can even detect lane markings, potholes, and slopes. These data are very important for auto-driving cars. important. In addition, because the laser beam has a long range, it can detect farther objects, allowing the car to “see” farther.
On Google’s self-driving cars, its positioning and navigation system uses 64-level laser technology for object detection and ranging, which can collect more than 1 million data points and provide key location information and navigation functions.
In addition to Google, OEM companies including Toyota, Volkswagen, BMW, Audi, Nissan, etc., as well as Tier 1 suppliers such as Continental, Bosch, and Delphi, are all developing and testing autonomous vehicle technology. In addition, Baidu’s unmanned Driving cars have also been tested on the road, and these companies naturally also use lidar technology. In the foreseeable future, the development of autonomous vehicles will create huge market demand for lidar.
Laser HUD: Improve driving safety. Head-up displays, also known as head-up displays, have received more and more attention in automobiles in recent years. This equipment projects the driving information of the vehicle onto the front windshield through projection, such as vehicle speed, engine speed, navigation information, fuel level, and some warning information.
The head-up display allows the driver to keep his eyes on the road green laser pointer ahead while the vehicle is driving, without having to look down at the information, thus helping to improve driving safety. Traditionally, a head-up display uses a light bulb as a light source to directly display data by reflecting on the screen, and its display effect has a lot to do with the quality and brightness of the light source.