parallax barrier
device placed in front of an image source to allow it to show a stereoscopic image without the need for the viewer to wear 3D glasses
en-US/ˈpæɹəˌlæks ˈbæɹiɚ/
en-GB/ˈpæɹəˌlæks ˈbæɹɪə/
device placed in front of an image source to allow it to show a stereoscopic image without the need for the viewer to wear 3D glasses