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STMicroelectronics VL53L9CX

VL53L9CX - High-Performance 2.3K-Zone 3D All-in-One LiDAR dToF Sensor

The VL53L9CX is a state of the art, dToF 3D lidar (light detection and ranging) module with market leading resolution of up to 2.3k zones enhancing the ST FlightSense product family. Housed in a miniature reflowable package, it integrates all necessary components to make it a true all-in-one and easy to integrate module. The VL53L9CX includes a SPAD array, postprocessing SoC, two VCSELs powered by a dedicated BCD VCSEL driver providing a flood illumination, physical infrared filters, metasurface optical elements (MOE), and an embedded PMIC. The module is Class 1 laser safe, offering skin protection in addition.

The use of a MOE above the VCSELs allows to project an optimized rectangular FoV onto the scene. The receiver lens focuses the reflection of this light onto the SPAD array.

Unlike conventional IR sensors, the VL53L9CX uses ST's latest generation BSI stacked direct ToF technology, which allows absolute distance measurement whatever the target color and reflectance. It provides accurate ranging from below 5 cm up to 8.8 m. The VL53L9CX can stream processed data at maximum frame rate (100 Hz), which makes it the fastest, truly integrated 3D lidar camera module on the market. Available output data: depth, 2D IR with active illumination, 2D IR without active illumination, reflectance, and confidence.

The VL53L9CX achieves the best ranging performance, including under strong ambient light conditions, with a range of cover glass materials. Multizone distance measurements are possible up to 54 x 42 zones, with a wide 55°x42° FoV, which can be reduced by software.

Features

Fast and accurate 3D direct Time-of-Flight (dToF) camera module
- Multizone ranging output with up to 54 x 42 separate zones and binning options
- On-chip processing streaming 2D IR image, depth and ambient maps
- Confidence level and reflectance maps generated in postprocessing
- Ranging from <5 cm up to 8.8 m
- Up to 100 Hz frame rate capability
- On-chip histogram processing and algorithmic compensation minimize or remove the impact of cover glass crosstalk and veiling glare
Fully integrated miniature module with wide field of view (FoV)
- Scan by two vertical-cavity surface-emitting lasers (VCSEL) flood illumination940 nm invisible light and integrated analog driver
- 55°x42° (71° diagonal) FoV using metasurface optical elements (MOE) on both transmitter and receiver
- Receiving array of single photon avalanche diodes (SPADs)
- Size: 12.8 x 6.1 x 4.6 mm

Easy integration
- True all-in-one module with integrated SPAD sensor and VCSEL PMIC
- Single reflowable component
- Interface: I3C & MIPI CSI
- Flexible power supply options:Supports dual power supply operation: 1.2 V & 3.3 V
- Compatible with a wide range of cover glass materials

Applications

Robotics
- SLAM
- Obstacle avoidance
- Small object identification
Augmented reality/virtual reality (AR/VR) enhancement
- Dual camera stereoscopy assistance thanks to 2D and depth multizone
  distance measurement at 60 fps
- 3D room mapping (multizone and multiobject detection)
- Gesture recognition and skeletal tracking
Industrial applications
- Content management thanks to wide FoV and multizone scanning (liquid
  level control, load in trucks, tanks, waste bins)
- People mapping

Smart homes
- Smart buildings and smart lighting (user detection to wake up devices)
IoT
- User and object detection
Mobile devices
- Telephoto zoom camera assist. High resolution and long range allow image crop to align with
  telephoto camera
- Laser-assisted autofocus (LAF). Enhances the camera AF system speed and robustness, especially
  in difficult low-light or low-contrast scenes.
- Video focus tracking. 60 Hz ranging allows optimization of continuous focus algorithm.
Projectors
- Keystone correction for video projectors