Abstract: A polarized optical element is disclosed comprising an upper portion and a lower portion defined at opposite parts with respect to a median line passing through the geometric center of the optical element, wherein: a) in the upper portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 3% and 20%; b) in the lower portion and at a distance of at least 10 mm from the median line the factor of luminous transmittance is between 15% and 65%; c) the ratio of the luminous transmittance measured in the lower portion at a distance of at least 10 mm below the median line and the luminous transmittance measured in the upper portion at a distance of at least 10 mm above the median line is not lower than 1.