FLUID SPRAY NOZZLE FOR A DEVICE FOR CLEANING AN OPTICAL DETECTION SYSTEM A spray nozzle (20) for a fluid, suitable for being placed on a body of a device for cleaning an optical detection system mounted on a motor vehicle, comprises an internal distribution duct which extends between a proximal end, capable of being fluidly connected to a fluid distribution channel formed in said body, and a distal end (38) forming an outlet for the fluid, the distribution duct being delimited at least by a bottom wall and two opposite side walls (64), said nozzle further comprising a ramp (70) arranged on the path of the fluid at the outlet orifice. The side walls (64) are arranged at the distal end (38) of the distribution duct so as to move away from one another, said distribution duct having a flare in the direction of the ramp (70 ). Figure of the abstract: Figure 3
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