How do 3D glasses work?

three -dimensional (3D) glasses work with manipulation of stereoscopic vision mechanics to create illusions of depth. Stereoscopic vision, the ability of people to see in both eyes, interprets the entry from the left and right eye as the only picture, even if the eyes see objects at different angles. This allows individuals to measure distance and depth on three -dimensional objects, but not in flat images where the eyes see a small difference in the perspective. 3D glasses, combined with specially produced images or videos, allow each eye to see a different image, which in turn allows the stereoscopic vision of the individual to interpret depth. This creates a slight difference between the field of view of each eye; Individuals notice this by staring at objects with only the left eye, then with the right eye closed. Because both eyes see things at different angles, the brain integrates both streams of information into a single 3D object. However, this ability is limited when objects are presented in a flat two -dimensional image because they are in teLeave and film screens. 3D glasses overcome this limitation by allowing a different image to enter each eye using color filters or specially polarized lenses.

Films

3D, when they are viewed without 3D glasses, often seem blurred or slightly distorted. The reason is that there are actually two slightly different images on the screen, each of which is at a slightly different angle from the other. 3D glasses separate two images from each other, represent one on the left eye and the other to the right. This replicates the effect of stereoscopic vision on 3D objects and allows pictures on 3D television and film screen, as it seems to have depth despite their two -dimensional nature.

For creating 3D illusions, two techniques are used: color filtering and lens polarization. Color filtering uses 3D glasses with differently colored lenses-timely red and blue-to block one of the imageCh pictures from each eye. Creating images and glasses is generally cheap, but images suffer from color loss due to filters. Modern technology uses images filmed with different polarizations to create a 3D illusion with minimal color loss. 3D glasses with this technique have lenses with different polarizations-one lens, which corresponds to each polarization of images on the screen-forning the feeling of depth.