Light Detection and Ranging. A sensor that measures distances by emitting laser pulses and timing how long they take to bounce back, creating precise 3D maps of the environment.
A laser rangefinder that fires millions of light pulses per second and measures how quickly each one bounces back. The result is a detailed 3D point cloud, like a connect-the-dots picture of everything around the robot.
Why It Matters
LiDAR is essential for autonomous navigation. It gives robots (and self-driving cars) centimeter-accurate 3D maps of their surroundings, working in any lighting condition. China's dominance in LiDAR manufacturing has driven prices down 90% in five years, making the technology accessible for robotics applications that were previously too expensive.
Real-World Examples
- Velodyne/Hesai LiDAR units on autonomous delivery vehicles mapping urban streets
- 2D LiDAR scanners on warehouse AMRs for obstacle detection and SLAM
- Livox (DJI subsidiary) LiDAR for drone-based 3D surveying and mapping
China dominates global LiDAR manufacturing. Hesai Technology (Shanghai) is the world's largest LiDAR manufacturer by volume. RoboSense (Shenzhen), Livox (DJI subsidiary), and Leishen Intelligent (Shenzhen) are major players. Chinese LiDAR prices dropped from $75,000 per unit in 2017 to under $200 in 2025, driven by automotive demand and manufacturing scale.
