The LightRanger 10 Click uses the VL53L4CX Time-of-Flight (ToF) sensor from STMicroelectronics for optical distance sensing. The sensor integrates a VCSEL (vertical-cavity surface-emitting laser) that emits a 940nm IR light, and a SPAD (single-photon avalanche diode) array. It measures distance by calculating the time it takes for the emitted light to reflect back from the target.
VCSEL
SPAD
ToF
28.6 x 25.4 mm