Recording and display method and apparatus
Abstract
Abstract 26. APPARATUS FOR FORMING IN A RADIATION ABSORBING FILM ON A TRANSPARENT SUBSTRATE A PICOTRIAL IMAGE FRAME COMPRISING A MULTITUDE OF SMALL DISCRETE HOLES, AND DISPLAYING THE IMAGE FRAME, SAID APPARATUS COMPRISING: A SOURCE OF MODULATED COHERENT RADIATION FOR FORMING PULSES OF COHERENT RADIATION; MEANS FOR CAUSING SAID PULSES TO SCAN THE FILM IN RASTERLIKE FASHION TO FORM AN AGGREGATE OF HOLES IN THE FILM, THE AGGREGATE OF HOLES FORMING AN IMAGE FRAME, THE HOLES BEING SEPARATED BY APPROXIMATELY THE DIAMESTER OF THE LARGEST HOLE FORMED IN SAID FILM AS MEASURED FORM THE CENTERS OF ADJACENT HOLES; MEANS FOR VARYING THE ENERGY OF EACH PULSE IN THAT RANGE FOR WHICH THE AREA OF THE HOLE FORMED BY THE PULSE INCREASES WITH INCREASING ENERGY WHEREBY A GRAY SCALE IS PROVIDED; AND MEANS FOR PROJECTING LIGHT THROUGH THE ENTIRE FRAME TO VIEW THE IMAGE.
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