Welcome to the wonderful world of 3D introduction, principles and history

The way to use of optics in creating three-dimensional illusions, are dicussed. The parallex effect, the way in which left and right eyes view the same scene fro two slightly different directions, enables people to see 3D images. All the method for achieving 3D displays using the parallax effect boil down to finding ways to block the parallel path while passing the crisscross one. This can also be done by using polarized light. Eye fatigue is a common concern with all 3D displays. It tends to occur if the point of accommodation is located at a different place from the point of convergence. In the Brewstre's and Wheatstone stereoscopes, the plane of projection coincides with the 3D image plane. A pair of prisms is used to shift a side-by-side stereoscopic pair of images toward the center, where two images meet. Besides this, several other approaches, like anaglyph, interception display, parallax barrier sterogram, and integral photography can be used to create 3D views.