VL53L3CX 3m Multi-Target Laser Sensor Module with Optical Cover 25*10.5mm

The VL53L3CX 3m Multi-Target Laser Sensor Module is an advanced, high-precision Time-of-Flight (ToF) distance sensor built on STMicroelectronics’ third-generation FlightSense™ technology. Compared to earlier VL53L0X and VL53L1X sensors, the VL53L3CX’s defining advantage is its multi-target detection capability — it can simultaneously detect multiple objects within its field of view and output the distance to each object, rather than only the nearest one. This makes it an ideal choice for robotics, smart building automation, and IoT applications that require a true understanding of scene depth.

The module is built around the VL53L3CX sensor IC, which uses a 940nm invisible laser (VCSEL) emitter and a single-photon avalanche diode (SPAD) array receiver. Combined with ST’s patented histogram processing algorithm, the sensor achieves three breakthrough capabilities:

• Multi-target detection — Simultaneously detects multiple objects (up to 4) within the field of view, outputting distance information for each target. This enables robots and devices to “understand” scene depth rather than merely sensing the nearest obstacle.

• Cover glass crosstalk immunity — The patented algorithm makes the sensor immune to crosstalk caused by cover glass at distances above 80cm. This means accurate long-range ranging performance is maintained even when the sensor is mounted behind a glass or acrylic panel.

• Dynamic smudge compensation — Automatically compensates for signal attenuation caused by fingerprints, dust, and other smudges on the cover glass, maintaining stable ranging accuracy over time.

The module features an optical cover measuring 25×10.5mm — a slim, compact format that makes it easy to embed into space-constrained device enclosures while protecting the internal precision optical components. This narrower cover width compared to the standard 25×13.3mm version makes it suitable for applications where board space or enclosure cutouts are limited.

The sensor itself has a package size of only 4.4×2.4×1mm and is pin-compatible with the VL53L0X and VL53L1X, facilitating upgrades and replacements in existing designs. The VL53L3CX has a ranging range of up to 3m (up to 5m under good conditions), a field of view of 25°, and ranging results are unaffected by target color or reflectivity. The module communicates via an I²C interface (up to 1MHz) and supports interrupt and Xshutdown reset pins to optimize power consumption.

Important Note: The VL53L3CX API has high memory and processing requirements for the host processor. It requires a 32-bit MCU (such as STM32) to run the full multi-target detection algorithm. 8-bit Arduinos are not suitable for this sensor. For resource-constrained applications, the VL53L1X or VL53L0X is recommended.

The module is widely used in service robots, robot vacuum cleaners, smart buildings, smart lighting, IoT devices, laser autofocus, and video focus tracking. It is suitable for individual makers, engineers, and businesses purchasing in bulk for product development or industrial applications.

Features

• Third-generation FlightSense™ technology — ST’s latest ToF sensor with exceptional performance

• Multi-target detection capability — Simultaneously detects up to 4 objects and their distances within the field of view

• 3m ranging range — Up to 5m under good conditions

• 940nm invisible laser — Class 1 eye-safe VCSEL emitter

• Cover glass crosstalk immunity — Immune to cover glass crosstalk above 80cm

• Dynamic smudge compensation — Automatically compensates for fingerprints and dust

• 25° field of view — Typical full field of view

• I²C interface — Up to 1MHz communication rate

• Slim optical cover — 25×10.5mm for space-constrained designs

• Pin compatible — Compatible with VL53L0X / VL53L1X pins

Technical Specifications