Patent ID: 8547422

Claim:
A display apparatus for projecting images towards eyes of at least one viewer selectively when said eyes are spaced horizontally within a viewing field, said apparatus comprising: an image generator for generating different images, each image being formed by horizontal scanning of vertical image areas; and a light configurator including: a spatial light modulator having at least one exit region for forming a vertical light configuration for each vertical image area, the exit region being horizontally movable in dependence on a position of a selected one of said eyes; a screen; and a transmitter for transmitting light from the image generator to the spatial light modulator, wherein the vertical light configurations during scanning of one of said different images form a source that is imaged by the screen to an exit pupil substantially coincident with the position of the selected one of said eyes and not with the position of the other eye, and wherein the display apparatus includes a controller for controlling the position of the exit region in dependence on the position of said each vertical image area such that the longitudinal position of the source relative to the spatial light modulator is controllable, the longitudinal direction being orthogonal to the screen.