Laser-based multi-user multi-modal 3D displays

Abstract

In HELIUM3D a glasses-free (autostereoscopic) display is under development by an eight member consortium with funding from the European Union. The project commenced in 2008 and will finish in June 2011. This display is designed to supply 3D to several users by employing the principle of head position tracking so that the positions where stereoscopic image pairs can be observed, referred to as exit pupils, can be directed independently to several viewers' eyes. In order to obtain the necessary control over the light exiting the screen a red, green and blue laser source is employed. Laser illumination is not used for its high coherence properties as in holographic displays but for its low étendue; that is a measure how spread out the light is in area and angle.