Tesla Patents Laser Windshield Wipers
NEWS: Tesla has been granted a patent where laser beams clean off debris off of the windshield. pic.twitter.com/vi23uRCRiU
— Sawyer Merritt (@SawyerMerritt) September 8, 2021
What The Patent Is For
Let's start with the patent abstract:
"A cleaning system for a vehicle includes a beam optics assembly that emits a laser beam to irradiate a region on a glass article of the vehicle, debris detection circuitry that detects debris accumulated over the region, and control circuitry. The control circuitry calibrates a set of parameters associated with the laser beam emitted from the beam optics assembly based on detection of the debris accumulated over the region on the glass article, controls an exposure level of the laser beam on the debris accumulated based on calibration of the set of parameters associated with the laser beam, wherein the exposure level is controlled base on pulsing the laser beam at a calibrated rate that limits penetration of the laser beam to a depth that is less than a thickness of the glass article, and removes the debris accumulated over the region on the glass article using the laser beam."
My interpretation of this is that Tesla is patenting a laser cleaning system to remove anything blocking the windshield, windows, and back window, and to also have a detection system that assists with knowing when to do this. The laser will also not penetrate the windshield to likely keep whoever is inside the vehicle safe from it.
You can see from the patent picture that there is some kind of device on the hood of the car and I believe this is the device that will create the laser to clean off debris. It could also be "laser" focused just on the area that the FSD camera needs to see out of too. Similar devices are on the side of the vehicle.
What Will It Be Used For?
Why would Tesla create a patent for this? I can think of a few reasons:
They don't want to deal with washer fluid and having to change it. This is especially important if they are going to have a robotaxi fleet. A laser cleaning system will save time and maintenance across a multitude of vehicles. It will also be convenient for those who own a Tesla vehicle as well (once this new laser system gets installed).
With FSD, there is a need for smart cleaning of the windshield so the car can see. Since the FSD forward camera is behind the windshield, what happens if there is a splatter of mud that hits the windshield and the camera cannot see. The car needs to be able to detect this and quickly clear the debris.
Autonomy is the primary reason I believe Tesla is creating this laser cleaning system. It makes sense. Tesla wants a fleet of automated cars that drive and clean themselves. I wouldn't be surprised if Tesla finds a way to pump air into the tires while the car is driving itself. They are just a highly innovative company!
What do you think of Tesla's patent for laser windshield wipers? Will it eventually remove the need for having windshield wipers and washer fluid? Is the reason for this autonomy and full self-driving vehicles with reduction in maintenance time and cost?
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Jeremy Johnson is a Tesla investor and supporter. He first invested in Tesla in 2017 after years of following Elon Musk and admiring his work ethic and intelligence. Since then, he's become a Tesla bull, covering anything about Tesla he can find, while also dabbling in other electric vehicle companies. Jeremy covers Tesla developments at Torque News. You can follow him on Twitter, Facebook, LinkedIn and Instagram to stay in touch and follow his Tesla news coverage on Torque News.