3D display
A 3D display is a display device capable of conveying depth to the viewer. Many 3D displays are two-view stereoscopic or autostereoscopic displays, which produce a basic 3D effect from binocular disparity, but can cause eye strain and visual fatigue. Newer 3D displays such as holographic and light field displays produce a more realistic 3D effect by combining stereopsis and accurate focal length for the displayed content. Newer 3D displays in this manner cause less visual fatigue than classical stereoscopic displays.
As of 2021, the most common type of 3D display is a two-view stereoscopic display, which is the type of display used in almost all virtual reality equipment. 3D displays can be near-eye displays like in VR headsets, or they can be in a device further away from the eyes like a 3D-enabled mobile device or 3D movie theater.
The term "3D display" can also be used to refer to a volumetric display which may generate content that can be viewed from all angles.
A simple form of 3D display is a two-view display, which generates two views, one for the left eye and one for the right eye. One of the earliest form of two-view display is the color anaglyph, which uses color filtered glasses, often red for the left eye and blue for the right eye.