Cylindrical lens and laminated plate scanning system

Claim 1

AN OPTICAL SYSTEM FOR PRODUCING ON AN IMAGE PLANE A RIGHT READING IMAGE OF AN ORIGINAL IN AN OBJECT PLANE OPTICALLY PARALLEL TO AND SPACED FROM SAID IMAGE PLANE, COMPRISING: TWO CYLINDRICAL LENSES OPTICALLY ALIGNED BETWEEN SAID IMAGE AND OBJECT PLANES WITH THEIR CYLINDRICAL AXES IN ONE AZIMUTH PARALLEL TO EACH OTHER AND TO SAID IMAGE AND OBJECT PLANES, EACH OF SAID LENSES HAVING ITS PLANO SURFACE FACING THE RESPECTIVE IMAGE OR OBJECT PLANE AND WITH SAID PLANO SURFACE SPACED THEREFROM BY A DISTANCE SUBSTANTIALLY EQUAL TO THE FOCAL LENGTH OF THE LENS, WHEREBY SAID LENSES FORM AN ASTIGMATIC IMAGE OF A PORTION OF SAID OBJECT PLANE ON SAID IMAGE PLANE; AND A PLURALITY OF THIN, FLAT PLATE ELEMENTS STACKED CENTRALLY BETWEEN AND SPACED FROM EACH OF SAID CYLINDRICAL LENSES, EACH OF SAID ELEMENTS HAVING A PARALLEL SURFACES THAT ARE PERPENDICULAR TO SAID IMAGE AND OBJECT PLANES AND TO SAID ONE AZIMUTH, AND PLANO ENTRANCE AND EXIT SURFACES THAT LIE IN PLANES PARALLEL TO SAID IMAGE AND OBJECT PLANES, WHEREBY SAID ELEMENTS DIRECTIONALLY DIFFERENTIATE IN SAID ONE AZIMUTH THE LIGHT RECEIVED BY EACH OF SAID ENTRANCE SURFACES FROM EACH POINT IN SAID OBJECT PLANE AND FOR TRANSMITTING ABOUT HALF OF SAID LIGHT DIRECTLY THROUGH EACH OF SAID ELEMENTS TO SAID IMAGE PLANE.