European Research into Head Tracked Autostereoscopic Displays

Stereoscopic displays that do not require the wearing of special glasses (autostereoscopic), enable a large degree of freedom of viewer movement and show the minimum amount of information have been developed within several European Union-funded projects. In the ATTEST and MUTED projects a stereo image pair is produced on a single liquid crystal display (LCD) by simultaneously displaying left and right images on alternate rows or columns of pixels. Novel steering optics is used to direct regions, referred to as exit pupils, to the appropriate viewers´ eyes. The positions of these are controlled by the output of a head position tracker. In the HELIUM3D project an autostereoscopic image is produced with the use of a light engine and illumination is provided by an RGB laser. Exit pupil locations are determined by a head tracker controlling a spatial light modulator (SLM).