Device for protecting an optical sensor and associated driving assistance system

A device for an optical sensor for a motor vehicle, said optical sensor comprising an optic, the device comprising:

• a housing that is mounted to be able to rotate around an axis of rotation and that has a compartment that is configured to accommodate the optical sensor;
• an optical element that is securely fastened to the housing, the optical element having at least one planar surface that is configured to be placed in the field of view of the optical sensor;
• an actuator that is coupled to the housing to drive the housing and the optical element to rotate;
• and
• a cylindrical fixed portion disposed entirely behind the optical sensor,
• wherein a motor is disposed on and in contact with an outer lateral periphery of the cylindrical fixed portion,
• wherein the housing further comprises an anti-condensation means comprising at least two orifices arranged symmetrically about the axis of rotation of the housing, wherein the orifices provide ventilation and prevent condensation from accumulating.

A device for an optical sensor for a motor vehicle, said optical sensor comprising an optic, the device comprising:

• a housing that is mounted to be able to rotate around an axis of rotation and that has a compartment that is configured to accommodate the optical sensor;
• an optical element that is securely fastened to the housing, the optical element having at least one planar surface that is configured to be placed in the field of view of the optical sensor;
• an actuator that is coupled to the housing to drive the housing and the optical element to rotate;
• and
• a relief that has a shape that narrows to a point, the relief being centered with respect to the optical axis of the optical element and projecting forward from a front surface of the optical element,
• wherein the housing further comprises an anti-condensation means comprising at least two orifices arranged symmetrically about the axis of rotation of the housing, wherein the orifices provide ventilation and prevent condensation from accumulating.