Benewake TF-UW500 Underwater Single-Point ToF LiDAR

Benewake TF-UW500 Underwater Single-Point ToF LiDAR is a high‑precision underwater single‑point LiDAR sensor engineered to deliver reliable distance measurement, mapping, and positioning beneath the water’s surface. The Benewake TF-UW500 adopts a direct Time-of-Flight (dToF) solution. It maintains the compact design and low power efficiency of its predecessor, while achieving a tenfold increase in detection range in low-turbidity water. The dToF solution enables underwater robots to achieve breakthroughs in both precise mapping and stable positioning.

TF-UW500 features an eye-safe Class 1 visible laser and delivers a small laser spot with excellent directionality and a wide incidence angle. With centimeter-level accuracy and millimeter-level repeatability, the TF-UW500 delivers exceptional distance-measurement precision. The device combines hardware-level filtering with advanced anti-glare algorithms and maintains stable performance even under strong light or in turbid water. Calibrated across 10+ common pool materials, TF-UW500 ensures consistent accuracy and smooth underwater navigation without wobble.

Thanks to the eye-visible red laser with a narrow 0.5° divergence angle and an advanced SPAD ultra-high-sensitivity single-photon detection chip, the TF-UW500 also delivers effortless, reliable ranging performance in air. Within an indoor range of up to 14m, the device maintains an accuracy of <3cm. The high-brightness red visible laser spot enables "point-and-measure" operation. This measurement style significantly simplifies installation, commissioning, and deployment in industrial production lines and warehouse logistics automation. During routine production line maintenance, the TF-UW500 makes it easier to identify false alarms caused by shifts in the LiDAR's detection position.

Features

  • Underwater measurement range of 5m
  • Class 1 eye-safe laser
  • Centimeter-level accuracy and millimeter-level repeatability
  • Minimizes multipath interference from conventional ultrasonic sensors
  • Enables full-path coordinate positioning and mapping
  • Minimizes inertial drift
  •  Resistant to strong light and turbidity
  • Air performance
    • 14m maximum indoor air range
    • High 3cm accuracy across the full measurement range
    • <0.5° FOV, highly focused red laser spot
Mechanical Drawing - Benewake TF-UW500 Underwater Single-Point ToF LiDAR
Mechanical Drawing - Benewake TF-UW500 Underwater Single-Point ToF LiDAR

Applications

  • Mapping and localization for underwater operation and working robots (e.g. robot pool cleaner)
  • Robot obstacle avoidance
  • Distance measurement and object detection for logistics and industrial automation
Mechanical Drawing - Benewake TF-UW500 Underwater Single-Point ToF LiDAR

Specifications

  • Performance
    • >5m underwater range
    • ≤0.1m blind zone
    • <1cm repeatability at 1σ
    • <3cm accuracy (0.1m to 2m)
    • 1mm distance resolution
    • 20Hz default frame rate
    • 100KLux ambient light resistance
  • Optical parameters
    • Laser light source
    • Red central wavelength
    • 0.5°C FoV
    • Class 1 eye safety (IEC 60825-1:2014; EN 60825-1:2014+A11:2021)
  • Mechanical and electrical
    • <5V × 100mA average power consumption
    • <700mA peak current at start-up
    • 5VDC ±0.2VDC power supply
    • 3.3V TTL logical voltage
    • 1.0mm 4P connector, HC-1.0-4PWT model
  • Communication protocol
    • UART/I2C interfaces (can be switched by command)
    • Default 115200 baud rate (configurable)
    • 8-bit data
    • 1-bit stop
  • 0°C to +50°C operating temperature range
  • 24mm × 16mm × 20.4mm size
  • <5g typical weight (excluding cables)

Dimensions: mm

Mechanical Drawing - Benewake TF-UW500 Underwater Single-Point ToF LiDAR
Publicado: 2026-03-04 | Actualizado: 2026-03-27