Integral imaging is an autostereoscopic or multiscopic 3D display, meaning that it displays a 3D image without the use of special glasses on the part of the viewer. It achieves this by placing an array of microlenses (similar to a lenticular lens) in front of the image, where each lens looks different depending on viewing angle. Thus rather than displaying a 2D image that looks the same from every direction, it reproduces a 4D light field, creating stereo images that exhibit parallax when the viewer moves.
Experiments with integral video are now being worked on. Japan's NHK broadcasting company has shown off demos featuring a prototype display viewable from virtually any angle. Toshiba has also begun research into the technology.
- Integral History—Comprehensive history of integral imaging