Photographic storage system

Claim 1

IN A DATA STORAGE APPARATUS THE COMBINATION COMPRISING A STORAGE ELEMENT HAVING A PATTERN OF DISCRETE TRANSPARENT AND OPAQUE AREAS REPRESENTING STORED DATA, MEANS TO PROJECT A BEAM LIGHT THROUGH SAID STORAGE ELEMENT TO PRODUCE AN IMAGE OF SAID PATTERN IN SPACE, PROJECTION LIGHT MICROSCOPE OPTICAL MEANS INCLUDING AN ARCHROMATIC LENS SYSTEM HAVING A FIELD FLATTENING LENS FOR VIEWING SAID IMAGE AND PRODUCING AN ENLARGED SPATIAL IMAGE OF SAID ENTIRE PATTERN, ELECTRO-OPTICAL MEANS HAVING A PREDETERMINED FIELD OF VIEW OF SAID ENLARGED IMAGE FOR CONVERTIING THE STORED DATA ON SAID STORAGE ELEMENT INTO ELECTRICAL OUPUT PULSES REPRESENTATIVE OF SAID DATA, AND MEANS TO ALIGN SAID IMAGE AND THE FIELD OF VIEW OF SAID ELECTRO-OPTICAL MEANS IN RESPONSE TO AN INDEXING MARK ON SAID PATTERN.