Variable density camera

Claim 1

AN APPARATUS FOR PHOTOGRAPHICALLY RECORDING A TIMEVARYING SIGNAL ON A PHOTOGRAPHIC RECORDING MEDIUM COMCOMPRISING; MEANS FOR MOVING SAID RECORDING MEDIUM IN ONE DIRECTION; OPTICAL MEANS DEFINING A RECORDING CHANNEL ON OF SAID MEDIUM, SAID CHANNEL HAVING LENGTH IN THE DIRECTION OF MOTION OF SAID MOVING MEDIUM AND HAVING WIDTH IN THE DIRECTION TRANSVERSE THERETO; A BEAM OF LIGHT DEFINING A POINT OF LIGHT INCIDENT UPON SAID CHANNEL; MODULATION MEANS FOR MODULATING SAID BEAM OF LIGHT IN SAID CHANNEL, SAID MODULATION MEANS BEING RESPONSIVE TO SAID SIGNAL; SAID MODULATION MEANS ACTING UPON SAID BEAM OF LIGHT TO MOVE SAID POINT OF LIGHT IN THE DIRECTION OF THE WIDTH OF THE CHANNEL; A GALVANOMETER MIRROR PIVOTALLY MOUNTED FOR OSCILLATION ABOUT AN AXIS IN THE DIRECTION SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID MEDIUM, MEANS FOR OSCILLIATING SAID MIRROR ABOUT SAID AXIS IN RESPONSE TO SAID SIGNAL; A LIGHT SOURCE FOR DIRECTING LIGHT TO SAID MIRROR FOR REFLECTION THEREBY TO SAID CHANNEL; A STOP APERTURE POSITIONED BETWEEN SAID MIRROR AND SAID RECORDING MEDIUM, SAID STOP APERTURE BEING OF PREDETERMINED WIDTH AND SO CONSTRUCTED AND ARRANGED AS TO PASS A PORTION OF SAID LIGHT THERETHROUGH, WHICH PORTION IS DEPENDENT UPON THE ANGULAR POSITION OF SAID MIRROR; AND MEANS FOR FOCUSING AN IMAGE OF SAID MIRROR SUBSTANTIALLY AT SAID MEDIUM IN SAID CHANNEL FOR SIMULTANEOUSLY RECORDING A VARIABLE DENSITY RECORD OF SAID SIGNAL WITH THE VARIABLE AMPLITUDE RECORD OF SAID SIGNAL RESULTING FROM RECORDATION OF SAID POINT OF LIGHT IN SAID CHANNEL.

Claim 2

AN APPARATUS FOR PHOTOGRAPHICALLY RECORDING A TIMEVARYING SIGNAL ON A PHOTOGRAPHIC RECORDING MEDIUM COMCOMPRISING; MEANS FOR MOVING SAID RECORDING MEDIUM IN ONE DIRECTION; OPTICAL MEANS DEFINING A RECORDING CHANNEL ON OF SAID MEDIUM, SAID CHANNEL HAVING LENGTH IN THE DIRECTION OF MOTION OF SAID MOVING MEDIUM AND HAVING WIDTH IN THE DIRECTION TRANSVERSE THERETO; A BEAM OF LIGHT DEFINING A POINT OF LIGHT INCIDENT UPON SAID CHANNEL; MODULATION MEANS FOR MODULATING SAID BEAM OF LIGHT IN SAID CHANNEL, SAID MODULATION MEANS BEING RESPONSIVE TO SAID SIGNAL; SAID MODULATION MEANS ACTING UPON SAID BEAM OF LIGHT TO MOVE SAID POINT OF LIGHT IN THE DIRECTION OF THE WIDTH OF THE CHANNEL; A GALVANOMETER MIRROR PIVOTALLY MOUNTED FOR OSCILLATION ABOUT AN AXIS IN THE DIRECTION SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF MOVEMENT OF SAID MEDIUM, MEANS FOR OSCILLIATING SAID MIRROR ABOUT SAID AXIS IN RESPONSE TO SAID SIGNAL; A LIGHT SOURCE FOR DIRECTING LIGHT TO SAID MIRROR FOR REFLECTION THEREBY TO SAID CHANNEL; A STOP APERTURE POSITIONED BETWEEN SAID MIRROR AND SAID RECORDING MEDIUM, SAID STOP APERTURE BEING OF PREDETERMINED WIDTH AND SO CONSTRUCTED AND ARRANGED AS TO PASS A PORTION OF SAID LIGHT THERETHROUGH, WHICH PORTION IS DEPENDENT UPON THE ANGULAR POSITION OF SAID MIRROR; AND MEANS FOR FOCUSING AN IMAGE OF SAID MIRROR SUBSTANTIALLY AT SAID MEDIUM IN SAID CHANNEL FOR SIMULTANEOUSLY RECORDING A VARIABLE DENSITY RECORD OF SAID SIGNAL WITH THE VARIABLE AMPLITUDE RECORD OF SAID SIGNAL RESULTING FROM RECORDATION OF SAID POINT OF LIGHT IN SAID CHANNEL.