Display system based on persistence of vision with a line screen
A display system for displaying an image is disclosed. The system comprises a projector comprising at least one collimated light source and a controller for receiving image data and controlling the light source, configured such that, in use, an array of columns of image data representing an image are projected sequentially onto a reflector. Due to persistence of vision they appear superimposed on one another when reflected into the eye of an observer and such that, when the observer's eye moves in a direction perpendicular to the direction of orientation of the projected columns the observer can view the image.
1. A display system for displaying an image, the system comprising:
a projector comprising at least one collimated light source; and
a controller configured to:
receive image data representing an image divided into columns;
control the at least one collimated light source; and
sequentially project, using the projector, an array of the columns of image data onto a reflector such that one column of image data is projected onto the reflector at any one time and the columns of image data appear superimposed on one another when reflected into an eye of an observer when the eye is stationary relative to the reflector;
wherein the projected columns of image data produce an image visible to the observer when the observer's eye scans across the reflector in a direction perpendicular to the direction of orientation of the projected columns.
2. The display system according to claim 1 further comprises the reflector which is a vertically mounted elongate strip.
3. The display system according to claim 2 wherein the reflector has a curved, U-shaped, or faceted cross-section which controls the reflection of the columns of image data and the viewing angle of the image.
4. The display system according to claim 2 wherein the reflector has a microscopic surface structure adapted to generate systematic diffraction and/or refraction, which controls the reflected light and the viewing angle of the image.
5. The display system according to claim 1 wherein the projector comprises a plurality of light sources.
6. The display system according to claim 1 wherein a light generated by the light source comprises a range of light wavelengths.
7. The display system according to claim 1 wherein the image is a moving image.