Polarization by refraction. polarization can also occur by refraction of light. refraction occurs when a beam of light passes from one surface material to another. At the surface of the two materials, the path of the beam of light changes its direction. The refracted beam of light acquires some degree of polarization in this transmission. Most often the polarization occurs in a plane perpendicular to the surface.

The polarization of reflected loss is often demonstrated in design and decoration. With tinted windows. The light is split into two beams upon entering the glazing through the tinted surface Subsequently, if an object is viewed by looking through this thin film interference at an unequal angle, and distorting of the image might occur, where two images are the result of the double refraction of light. Both refracted light beams a polarized one in a direction parallel to the surface, and the other inner direction perpendicular to the surface. Since these two refracted rays are polarized with a different orientation, a polarizing filter can be used to completely block one of the images. If the polarization axis of the filter is aligned perpendicular to the plane of polarized light, the light is completely blocked by the filter.

Meanwhile, the second image is just as broad as it can be.