Optically pumped gyromagnetic apparatus

Claim 1

AN APPARATUS FOR MEASURING THE ANGULAR ROTATION RATE OF A BODY COMPRISING: MEANS MOUNTED TO ROTATE WITH SAID BODY FOR SEPARATELY CONTAINING A PLURALITY OF DIFFERENT MAGNETIC FIELD RESPONSIVE MATERIALS HAVING DIFFERNET GYROMAGNETIC RATIONS; MEANS MOUNTED FOR ROTATION WITH SAID BODY FOR SUBJECTING BOTH SAID MEDIUMS TO UNDIRECTIONAL MAGNETIC FIELDS IN A MANNER SUCH THAT UNDESIRABLE FIELD STRENGTH VARIATIONS WHICH TEND TO OCCUR ARE NECESSAIRLY APPLIED EQUALLY AND SIMULATENEOUSLY TO BOTH SAID MEDIUMS; OPTICAL PUMPING MEANS ORIENTED TO ESTABLISH A NET MAGNETIC MOMENT IN EACH OF SAID MATERIALS; ALTERNATING MAGNETIC FIELD GENERATING MEANS ORIENTED TO DRIVE EACH MAGNETIC MOMENT AT ITS LARMOR FREQUENCY; AND MEANS MOUNTED FOR ROTATION WITH SAID BODY AND RESPONSIVE TO OPTICAL RADIATION PROPAGATED IN THE ZONE OF SAID MEDIUMS AND PASSING FROM SAID CONTAINMENT MEANS, FOR GENERATING ELECTRICAL SIGNAL COMPONENTS CORRESPONDING TO THE LARMOR FREQUENCIES OF EACH OF SAID MAGNETIC MOMENTS, AND OUTPUT MEANS PRESENTING SAID SIGNAL COMPONENTS FOR INDICATION AND MEASUREMENT THEREOF, WHEREBY MEASUREMENT OF SAID FREQUENCIES PROVIDES INFORMATION RELATING TO THE ANGULAR ROTATION OF SAID BODY.