Patent ID: 7425069
Filing Date: 2008-09-16
Classification: H04N

Abstract:
1. Autostereoscopic multi-user display, containing an illumination matrix and a projection matrix used to distribute white light as homogeneously as possible on a transmissive image matrix which contains a number of controllable pixels for sequential representation of two-dimensional images or image sequences with monoscopic and stereoscopic image contents, whereby a large area of said image matrix is permeated by said light distribution, and where said projection matrix contains a multitude of lens elements, characterised in that the illumination matrix and the projection matrix form a sweet spot unit, which is disposed in front of the image matrix (seen in the direction of light propagation), and which generates bundles of almost parallel rays with a definable extension, the light of said bundles of rays being focused in the form of sweet spots on to an eye of at least one observer, and that the illumination matrix is disposed in or close to the focal plane of the lens elements of the projection matrix; the number of lens elements of the projection matrix is ⅓ or less than the number of pixels, so that the bundles of rays of a sweet spot simultaneously permeate a multitude of adjoining pixels; the sweet spots assigned to the eyes of one or multiple observers are tracked according to a changing eye position.