A spatial light modulator includes an array of elements to modulate light
in accordance with image data. The modulator has a display panel having
first and second surfaces arranged adjacent to the array of elements such
that the second surface is directly adjacent the array of elements to
allow a viewer to view an image produced by modulation of light. The
modulator may also include a light source to provide light to the display
panel and illumination dots on the first surface of the display panel to
reflect light from the source to the array of elements.