Element filter vision A windshield or rear view mirror for a road vehicle

A vision filter element (1) forming a windscreen or mirror for a road vehicle (10) comprises a lower zone (11) and an upper zone (12). The filter element of vision is adapted to a difference in attenuation between the two linear polarizations of incident radiation has values ​​which are different in the lower and upper zones. The two linear polarizations can be respectively contained in a horizontal and vertical plane. Dazzling the driver by a light reflection spot that is produced on a road by the headlights of an external vehicle (101), can be reduced or deleted.