Direct writing oscillograph

Claim 1

A SYSTEM FOR THE DIRECT RECORDING OF DATA COMPRISING, IN COMBINATION, A SOURCE OF RADIANT ENERGY HAVING WAVE LENGTHS WHICH LIE IN THE VISIBLE BAND OF THE FREQUENCY SPECTRUM, A FILM WHICH IS SENSITIVE AT LEAST TO THAT PORTION OF THE RADIANT ENERGY WHOSE WAVE LENGTHS LIE IN THE VISIBLE BAND OF THE FREQUENCY SPECTRUM AND WHICH IS ESSENTIALLY INSENSITIVE TO THAT PORTION OF THE ENERGY WHOSE WAVE LENGTHS LIE IN THE INFRARED RANGE OF THE SPECTRUM, SAID FILM HAVING THE ABILITY TO RECORD A LATENT IMAGE WHEN EXPOSED TO SAID VISIBLE RADIATIONS AND TO MAKE SAID LATENT IMAGE VISIBLE BY PHOTOLYZATION, GALVANOMETER MEANS INCLUDING A MIRROR FOR REFLECTING SAID VISIBLE RADIATIONS FROM SAID SOURCE TO SAID FILM IN ACCORDANCE WITH DATA TO BE RECORDED, GLASS OPTICAL ELEMENT MEANS TRANSPARENT TO SAID VISIBLE RADIATIONS LOCATED IN THE PATH OF SAID RADIATIONS BETWEEN SAID SOURCE AND SAID FILM FOR COLLECTING SAID VISIBLE RADIATIONS AND CONCENTRATION IT ON SAID FILM AS AN INTENSE LIGHT SPOT, SAID GLASS OPTICAL ELEMENTS BEING ESSENTIALLY OPAQUE TO RADIATIONS IN THE ULTRAVIOLET RANGE OF FREQUENCIES WHEREBY SAID SYSTEM IS SENSITIVE SUBSTANTIALLY ONLY TO RADIATIONS IN THE VISIBLE RANGE OF FREQUENCIES.