If you take 3D glasses, because of the polarization lens filter, the left and right eye to see a different picture, when we see the real thing with glasses. According to the calculation of the brain will produce three-dimensional feeling.
3D glasses need to cooperate with the 3D film before it is useful to see ordinary movies useless.First of all, we can see that the light is polarized, the processed light has a polarization direction (the direction of the light itself is the same), but we still look the same.Then there is a kind of lens, called polarized lens, he also has polarized direction, the same direction of polarization of light can pass, different light can not pass.When the 3D film was shot, it was shot with two cameras at different angles (almost the same angle between the eyes), and the two groups of images were projected onto the screen after processing in different polarization directions.If you don't wear 3D glasses at this time, you seem to be two groups of images blurred together.
