Every lidar faces the same basic task: it has a laser, and it has to point that laser across the whole scene, many times a second, to build a complete picture. How it aims — beam steering — is one of the deepest design choices in the sensor. The classic answer is to spin the whole assembly mechanically. It works, but it is bulky, has moving parts that wear, and is hard to package into a car's bodywork. A 2023 LeddarTech grant is about the alternative.
The record: on November 28, 2023, LeddarTech Inc. was granted US11828853B2, a “Beam-steering device particularly for LIDAR systems.” The CPC classes are lidar-specific — G01S 17/93 (lidar for anti-collision), 7/4817 (scanning), 7/4865 and 7/497 (signal handling). This is a patent specifically about the steering mechanism, the part that decides where the beam goes.
Here is the spectrum of approaches. At one end, mechanical spinning lidars rotate physically to sweep 360 degrees — robust and proven, but large and mechanically complex. At the other, fully solid-state lidars steer the beam electronically with no moving parts — compact and durable, but harder to engineer for range and field of view. In between are hybrid steering devices that reduce or refine the moving parts. A beam-steering grant is a position somewhere on this spectrum.
Why does steering matter so much for the car? Because it drives the things buyers and integrators care about: size (can it hide in the bodywork?), durability (will it survive years of vibration?), cost, and the resolution-versus-field-of-view trade-off. A more solid-state steering approach promises a lidar that is smaller, tougher, and easier to integrate — which is why the whole industry has been pushing in that direction.
That a sensor specialist like LeddarTech holds this fits the pattern. The beam-steering device is the differentiating core of a lidar; the lasers and detectors are increasingly commodity, but how you aim the beam reliably and cheaply is where the engineering value concentrates. A 2023 grant on a steering device is a claim on that high-value core.
The skeptic's caveat: a granted beam-steering method is a technique, not a finished, deployed sensor, and “moving toward solid-state” is a direction, not an arrival. Each steering approach has real trade-offs that the marketing tends to flatten. But beam steering is genuinely where lidar durability and packaging are decided, and a 2023 LeddarTech grant is a window into the long, unglamorous march away from spinning mechanics toward something a car can carry for a decade.