Thin film color display device

Claim 1

IN A DISPLAY DEVICE ADAPTED TO PROVIDE AN IMAGE, A SOURCE OF COLLIMATED POLYCHROMATIC LIGHT, FIRST AND SECOND PLANE POLARIZING FILTERS, AND CHROMATIC ROTARY DISPERSING MEANS BETWEEN THE TWO FILTERS, SAID DISPERSING MEANS COMPRISING METALLIC KERR MAGNETO-OPTIC REFLECTOR MEANS AND ADDITIONAL COLOR DEPENDENT PHASE CHANGE MEANS FOR COACTION WITH SAID KERR MAGNETO-OPTIC MEANS TO PROVIDE FOR ALTERATION OF THE POLARIZATION OF COLOR COMPONENTS OF THE LIGHT PASSED TO SAID SECOND FILTER, SAID ALTERATION BEING IN A MANNER WHICH IS DEPENDENT UPON AND ALTERABLE WITH REVERSAL OF THE KERR COMPONENT GENERATED BY SAID MAGNETO-OPTIC MEANS, AND MEANS FOR ESTABLISHING A MOSAIC PATTERN IN THE MAGNETIC STATE OF SAID REFLECTOR MEANS AND INCLUDING CONTROL MEANS PROVIDING A SWITCHING FLUX FOR SELECTIVELY VARYING SAID MOSAIC PATTERN, WHEREBY THE LIGHT PASSING SAID SECOND FILTER IS DIFFERENTIATED TO PROVIDE A POLYCHROMATIC IMAGE IN ACCORDANCE WITH SAID MOSAIC PATTERN.