42 depending on the positions of the tilting micro mirrors light rays are absorbed or directed to the viewer when a tilting micro mirror is in the up position such as micro mirror 33 b fig2 most light rays exiting from light exit facet 42 of micro prisms 32 reflect from the lower surface of the micro mirrors and are directed to the viewer by reflecting from light reflecting facets 47 when a micro mirror is tilted down such as micro mirrors 33 a and 33 c most light rays exiting from light exit facet 42 of micro prisms 32 reflect from the lower surface of the micro mirrors and are absorbed in the light absorbing layer 40 to prevent light leakage when micro mirrors are in the tilted down position from the gap 58 the display 20 limits the minimum angle that light rays can exit from the light exit facets 42 of the micro prisms 32 with respect to the upper surface 30 of the waveguide 21 the minimum angle is defined by the refractive indexes n 1 n 2 n 3 and angle 23 referring now to fig4 of the drawings a cross sectional view of another embodiment of display of the present invention is there shown and generally designated by the numeral 70 this latest embodiment is similar in some respect to the embodiment shown in fig1 and 2 of the drawings and like numbers are used in fig4 to identify like components the display 70 is a full color display wherein each picture element comprises of red green and blue sub pixels and includes dichoric filters for separating rgb colors from a white light source or from rgb light sources that are mixed in the waveguide 21 the display 70 includes optical waveguide.