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TF-UW500 Underwater LiDAR Sensor – Redefining Precision Sensing Below the Surface

The TF-UW500 is the next generation of underwater single-point LiDAR designed for service robots, pool-cleaning robots, and underwater inspection devices. Based on a dToF (direct Time-of-Flight) architecture, it maintains the small size and low power consumption of the previous generation while achieving more than 10× longer ranging performance in low-turbidity water.
With TF-UW500, underwater robots can finally achieve precise mapping + stable positioning at the same time.

10× Ranging Distance – Expanding the Limits of Underwater Perception

Using a Class 1 eye-safe visible-light laser, TF-UW500 inherits all the natural advantages of LiDAR over traditional ultrasonic sensors:

• Small, focused laser spot

• Strong directionality

• Wide usable incidence angle

• Zero multipath interference

These strengths allow the sensor to maintain high accuracy even in complex underwater environments.

Key Performance:

• Ranging distance: 0.1 m – 5 m

• Field of View: 0.5°

• Dimensions: 24 × 16 × 21 mm

• Weight: < 5 g

Compact, powerful, and easy to integrate into any underwater robotic platform.

Full Mapping + Positioning Coverage

With centimeter-level accuracy and millimeter-level repeatability, TF-UW500 achieves exceptional distance-measurement performance.
It enables robots to perform complete coordinate-based mapping and localization in most private swimming pools, helping reduce inertial-navigation drift and improving movement stability.

This leads to straighter paths, fewer cleaning omissions, and higher task efficiency.

Precision Specs:

• Repeatability: < 1 cm @ 1σ

• Accuracy: < 3 cm (0.1–1 m); < 5 cm (> 1 m)

• Operating temperature: 0°C ~ +50°C

Anti-Sunlight + Anti-Turbidity Performance

Underwater lasers often face severe degradation in bright sunlight and turbid water.
TF-UW500 solves this with dual-layer optimization:

✔ Hardware optical filtering

✔ Software anti-sunlight algorithms

In addition, we collected data from 10+ types of common pool materials with different reflectivity and surface treatments, integrating them into the calibration model to avoid unstable sensing or “side-to-side wobbling” behaviors in robots.

No matter the lighting or water quality, TF-UW500 maintains stable, reliable output.

Why Choose TF-UW500?

• Ultra-compact and lightweight for easy integration

• True dToF architecture for fast, accurate measurement

• 10× extended range for wider coverage

• Precise mapping + stable positioning

• Strong performance in bright light and turbid environments

• Designed specifically for underwater robotics

Bring Your Underwater Robot to the Next Level

Whether you are building a pool-cleaning robot, underwater service drone, or inspection platform, the TF-UW500 offers the precision, reliability, and robustness your product needs to stand out.

Contact us to get samples, integration guides, or technical support.
Empower your underwater robotics with the next-generation LiDAR.