Polarizing filters reduce eye fatigue, as vision is not forced to compensate for glare and other phenomena deriving from reflected light.
Polarized glasses are particularly suitable for those who spend a very long time outdoors or practice activities, such as driving or sports, in which the eyes are more stressed and need greater protection.
reflected from a surface of water or from the windshields of cars is horizontally polarized; wearing polarized glasses - whose polarization axis is orthogonal to the axis of the same reflections - the polarized light component is eliminated.
POLARIZATION is, therefore, the ability of the electromagnetic waves that make up light to change their orientation when they come into contact with matter.
Simplifying further, we speak of POLARIZED LIGHT when the light waves meet a flat surface, capable of reflecting them, that is, they are directed in a well-defined direction. This change in axis and the resulting intense brightness cause glare, which in turn is responsible for:
- Reduction of visibility;
- Distortion of colors;
- Eye fatigue and irritation.
The lenses of polarized glasses have an optical filter (called polarizer or polarizing filter) that:
- It passes a type of polarized light;
- Blocks waves of different polarization.
By eliminating about 99% of the reflection, the result is sharper vision in specific situations and less tiring for the eye.
