Light detection and ranging.
Or, what is the same, detection and measurement of light. These are the words behind Lidar. This technology uses light pulses to map the environment and discover each and every corner of a stay or an open space almost in real time, as well as to recreate 3D environments with enormous precision.
To understand how a lidar radar works, I recommend watching Mark Rober’s video in which it tells the differences between a car equipped with this system and its tesla, which exclusively uses cameras to detect the obstacles that you can find along its path.
Beyond the controversy arising in relation to the tests that Rober does, the video explains well Why Lidar is such a complete system. In a simple way, the system takes advantage of the speed of light to emit infrared pulses. These bounce in the object in question and the system calculates how far that object is using the time that the pulse of light has taken to go and return.
As light pulses have a very small size and, as we said, it takes advantage of that very high speed of light transmission, can map the objects almost in real time.
In recent days, after Mark Rober’s video, the controversy of whether it is better to use an LIDAR or one system that exclusively use cameras and recreations by software is better or worse to guarantee the best behavior in terms of autonomous driving. A controversy that has left people trying launch your tesla against a wall With a road painted in the purest shyesty style.
And it is a long time since it made it clear that I would bet everything on the use of cameras for manage your driving aid systems Or, in the future, completely autonomous driving with the robotaxis that wants to put in the streets.
At the time, home vacuum robots also lived this moment of indecision. And along the way, Irobot who was the leading market leader has ended up giving millionaire losses and has seen how Chinese manufacturers have eaten much of the market.
The secret of the latter: they use lidar instead of trusting everything to the cameras.
What can you learn from a vacuum cleaner
“We have substantial doubts”, with these words Irobot owners responded to the question of whether they could move forward with their operations. My partner Javier Pastor explained A few months ago when Amazon raised the purchase of Irobot in 2022 (which fell into regulatory terms) The company had a value of 1.2 billion dollars.
In the third quarter of 2024, the calculation was about 200 million dollars. Shortly after, The situation has not improved a lot. In 2024, Irobot lost more than 145 million dollars. However, they had reduced their losses by 52%.
The company faced a perfect storm. After spending the worst of pandemic, spending on home robots and other products (such as computers) They collapsed. That coincided with the launch of new Chinese products that were faster and faster than Irobot’s: they used the lidar sensor.
This system is ideal for improving the capacities of a vacuum robot. It detects better obstacles, mapping the house more precisely and that translates into faster and more effective work. The result is especially good if it is combined with the cameras and artificial intelligence systems to discover smaller obstacles that can go unnoticed or create confusion.
In recent years, that has been the trend of the market in cleaning the home. The combination of this system with a more attractive price He has triggered the sales of Chinese aspiring robots, to the detriment of an Irobot that accumulated more than 60% market share.
The comparison with Tesla and the electricity car market is evident. The latter are using Lidar sensors in their cars and offer a product equal to or better than Europeans and Elon Musk’s for a fraction of their price. He Xiaomi Su7 and its wide reception He is being a good example of this.
Tesla has long since defends that Lidar are not necessary to improve autonomous driving systems but studies say that, as in the case of vacuum robots, the best performance is signed When both technologies are combinedLidar and cameras.
In the case of Xiaomi, the videos shown from How your total autonomous driving system operates They are impressive, with very human behavior and managing the smallest spaces very well. This is possible because, among other things, A lidar is better when calculating distances And suffer less when the light falls. Neither does the risk of the camera be dazzled, At least not intentionallygenerating Ghostly brakes.
So far, everything indicates that Tesla does not seem willing to return to anything other than the “All Chamber” To save costs. At the moment it has worked but you have to demonstrate that it is as effective as more advanced systems. And there is also the largest electric car market in the world. In China, where foreigners are suffering from the local product, Tesla is hitting a good batacazo in 2025.
Photo | Tesla and Irobot