How 3D Works
Our eyes are spaced apart from each other, which means our left and right retinas see objects at slightly different angles. In real life, the brain merges these two images into a single three-dimensional image. To recreate this experience of depth on television, a 3D TV will display two separate but overlapping images of the same scene simultaneously, and at slightly different angles as well. One image is intended for the left eye, the other for the right. A pair of Active Glasses helps viewers perceive the two 2D images as one 3D image.