LeddarSteer™ is a digital beam steering technology based on liquid crystal and polarization gratings which steers light to the desired angles rapidly, accurately, and reliably.
LeddarSteer divides the FoV into discrete tiles that can be assembled to create the complete frame, with or without a region of interest. These FoV configurations can be changed on-the-fly, depending on the vehicle’s speed or environment, to enable multiple ADAS and AD use cases to be fulfilled from a single LiDAR design.
This Technical Note aims to explain how liquid crystals and light polarization are used in autonomous driving and its applications. The document starts with an overview of terminologies and proceeds to explain the workings of liquid crystals and light polarization and how these two technologies combine to change the direction of light. Finally,the document details the usage of liquid crystals and light polarization within autonomous driving through beam steering and the advantages the system offers.