Autostereoscopic 3-D video display using multiple light beams with scanning

An autostereoscopic 3-D displaying technique that uses fan-likely placed multiple light beams in a light array with 2-D raster scanning is proposed. This technique is capable of displaying multiple perspective views at high resolution because the number of views only depends on the number of light beams, while the number of light beams does not depend on the resolution of each view. Moreover, dozens or hundreds of perspective views at an angular interval narrower than one degree can be produced if small light sources are used. On the basis of this technique, an experimental 3-D display system capable of producing 45-view video images at an angular interval of 0.5 degrees at a time is developed. Furthermore, the effectiveness of the technique is demonstrated by using this system.