Device for cleaning an optical sensor of an optical detection system for a motor vehicle

A cleaning device to spray at least one fluid toward a surface that is to be cleaned comprising an optical sensor of an optical detection system of a motor vehicle, the cleaning device comprising at least:

• a hollow body closed at one end by an inlet flange;
• a mobile piston that slides along a longitudinal axis in the hollow body and which at a first end bears a cleaning fluid distribution element, the piston being able to move between a retracted extreme position and a deployed extreme position;
• a rod secured to the inlet flange which runs parallel to the longitudinal axis and along which the mobile piston slides;
• means for conveying cleaning fluid through the hollow body, from a fluid intake end-piece as far as the distribution element, the means for conveying comprising at least one intake chamber, the volume of which varies according to the movement of the mobile piston and a distribution duct formed in the mobile piston,
• the piston or the rod being configured to provide between them a plurality of passageways for the cleaning fluid,
• wherein at least two passageways of the plurality of passageways have different axial dimensions along the longitudinal axis.