Tesla has secured a patent for a compact lens-cleaning system intended to keep vehicle cameras free of dirt, water, mud, snow, and other debris. The Lens Cleaning System patent describes a miniature assembly that integrates a fluid dispenser and a mechanical wiper directly around the camera lens, providing a solution that does not require large washer nozzles or external cleaning hardware.
How the camera-cleaning system works
The design places the camera lens inside a protective housing that contains a small fluid reservoir and a dispensing mechanism to spray cleaning liquid directly onto the lens. After fluid is applied, a small wiper blade moves across the lens to remove debris, similar to an eyelid lubricating an eye. Unlike traditional windshield wipers that sweep across a largely flat surface, this configuration uses a compact blade that follows the curve of the lens. Patent figures depict the blade rotating around the lens while maintaining close contact with its surface.
Beyond fluid-only, more compact
Reliable camera cleaning is necessary for autonomous driving. The Model Y robotaxi and the Cybercab are now using higher-pressure spray nozzles to help clear cameras. This patent outlines an approach that goes a step beyond fluid-only systems by adding a wiper.
Tesla describes potential use of different cleaning fluids based on conditions, including water, alcohol-based solutions, washer fluid, lubricants, or other cleaning agents.
Because the cleaning hardware is built into the camera assembly, the housing can remain compact, preserving today’s camera locations, including tighter spots such as the fender and B-pillar.
If applied to production vehicles or the Cybercab, the system could improve lens clearing, particularly for stubborn debris like insects, and for cameras that tend to accumulate more grime, such as a front bumper camera.
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