Patent ID: 8416368

Claim:
A display screen, comprising: a screen assembly comprising an optical element having a first surface, a second surface, a first edge and an index of refraction; a monochromatic light source assembly that is positioned to direct a first light beam delivered from a first light beam source to a first position on and at a first angle of incidence to the first surface; and a support frame having a support surface that is disposed over a shadow region on the first surface of the optical element, wherein a portion of the shadow region is disposed between the first position and the first edge of the optical element, wherein the index of refraction and the thickness of the optical element between the first and second surfaces are selected to direct the first light beam from the first position to a second position on the second surface of the optical element, and a portion of the first light beam passing through the optical element between the first position and the second position passes under at least a portion of the shadow region.