Helium3D: A laser-based 3D display with '3D+' capability
Abstract
In this paper we describe our latest research into 3D displays that do not require the wearing of special glasses (autostereoscopic), can provide 3D to several viewers who have a large degree of freedom of movement and direct a different image to every eye in the viewing field so that motion parallax (the ability to 'look-around' objects) and other interesting modes of operation are achieved ('3D+'). The display operates by providing regions in the viewing field, referred to as exit pupils that follow the positions of the viewers' eyes under the control of a multi-user head tracker. The display incorporates an RGB laser illumination source that illuminates a light engine. Light directions are controlled by a spatial light modulator and a front screen assembly incorporates a novel Gabor superlens. The principle of operation is explained and the construction of three iterations of the display is described.
