OT128 Auto-Grade 360° x 40° Long-Range Lidar

Auto-Grade Flagship 360° High-Performance Long-Range Lidar
 
Hesai's OT128 is a cutting-edge 128-channel mechanical lidar sensor designed for high-performance 3D perception in autonomous vehicles, robotics, smart infrastructure, and industrial systems. With a full 360° horizontal field of view and an extended vertical FOV of 40°, it delivers up to 6.91 million points per second in dual-return mode. OT128 offers configurable horizontal resolution (0.1°–0.4°), ±3 cm ranging accuracy, and a maximum range of 230 meters. Engineered for reliability in harsh conditions, it features IP6K7/IP6K9K protection, operates from –40°C to 75°C, and supports advanced synchronization via PTP. OT128 is ideal for applications requiring dense point clouds, wide-angle coverage, and robust data quality under demanding conditions.

Range	0.3 to 230 m 1 to 200 m (at 10% reflectivity)
Number of channels	128
Detection Range Accuracy	±3 cm (3 to 200 m, typical)
Horizontal FOV	360°
Horizontal resolution	Configurable on-the-fly 0.1°/0.2° (10 Hz) 0.2°/0.4° (20 Hz)
Vertical FOV	40° (–25° to +15°)
Vertical resolution	0.125° (Channel 24 to 89) 0.36° (Channels 8 to 24, 89 to 121) 0.67° (Channels 4 to 8, 121 to 125) 1.2° to 1.72° (Channels 1 to 4, 125 to 128)
Frame rate	10 Hz, 20 Hz

Mechanical/Electrical:

Power	29 W
Operating Voltage	DC 9 to 32 V
Dimensions	Height: 132.3 mm Top/bottom: Φ111.4/116.0 mm or Φ111.4/118.0
Weight	2.2 kg

A single OT128 lidar can cover a vehicle’s entire field of view without stitching.

With a finest angular resolution of 0.1° (H) x 0.125° (V), the OT128 can accurately perceive objects large and small at a distance of 200 meters away, providing powerful perception data for autonomous driving systems.

Under 100 klux strong ambient light, OT128 has a ranging capability of 200 m at 10% reflectivity (230 m maximum), clearly detecting objects in real time and capturing every detail of its surrounding road conditions.

IPE: Noise Filter Functio