Parallax barrier rear projection autostereoscopic 3D display

This paper describes a rear projection autostereoscopic 3D display system composed of a parallax barrier and a rear LCD projector and the projection screen is made of a piece of ground glass. This 3D display avoids some problems of the direct view parallax barrier 3D display, such as the color band, the motion band caused by the black matrix and the parallax barrier. The size of image pixel in the system can be adjusted arbitrarily, and it is easy to match with the size and periodicity of the parallax barrier. So any size of a 3D display screen can be realized. Moreover, the parallax barrier can be put on the projection screen with the barrier at the vertical direction, and the resolution of 3D image is improved. A 40-inch 3D prototype system has been developed. Several views are used to realize the display of 3D static, animation and video images. The system presents high brightness, contrast ratio and good color stereo image display although there are some problems to be solved for its application.