Image display using matrix screen and periodic grating having a fixed period

An image display device comprising:

• a matrix screen with a plurality of pixels arranged in rows and columns;
• a periodic grating having a fixed period with respect to all user viewing positions, the periodic grating arranged in front of the matrix screen and having a structure extending parallel to the columns, wherein the fixed period of the periodic grating in a lateral direction corresponds to an integer multiple of a spacing of adjacent columns of the matrix screen and wherein the periodic grating is suitable to deflect light emanating from the pixels in different sectors mutually laterally offset;
• means for detecting at least two different viewing positions including head positions or eye positions of at least two different viewers;
• and
• a programmed control unit connected to the matrix screen for controlling the pixels of the matrix screen in dependence on image information of different images, the control unit being configured to:
• determine disjunctive excerpts of columns of the matrix screen in dependence on the detected viewing positions such that one respective excerpt is associated with each of the detected viewing positions, such that this excerpt includes all columns at least partly visible from this viewing position through the periodic grating, whereas none of the columns of this excerpt are visible from at least one other of the detected viewing positions;
• and
• control the matrix screen in dependence on image information of at least two different images such that exactly one of the images is reproduced on each of the excerpts thus determined and such that the pixels of directly adjacent columns which belong to the same excerpt are controlled, in addition to a dependence on the image information, in each of the rows in a weighted intensity or brightness control such that a center of brightness of a picture element reproduced by these pixels is placed in a center of a section of this picture element which is visible from the viewing position with which this excerpt is associated.