Spectropyrometer apparatus and method

Claim 1

A PYROMETRIC SYSTEM COMPRISING: FIRST MEANS INCLUDING MEANS TO INTERCEPT RADIANT ENERGY EMITTED FROM A BODY OF UNKNOWN TEMPERATURE, AND MEANS TO DISPERSE THE INTERCEPTED ENERGY IN A BAND ACCORDING TO WAVE LENGTH; SEOND MEANS COMPRISING FIRST AND SECOND TWIN RADIANT-ENERGY DETECTORS, CONSTRUCTED AND ARRANGED TO POSITION SAID DETECTORS TO INTERCEPT SUBSTANTIALLY ALL OF SAID DISPERSED BAND OF ENERGY WITH SAID FIRST DETECTOR RECEIVING ENERGY OF ALL SHORTER WAVE LENGTHS AND SAID SECOND DETECTOR RECEIVING ENERGY OF ALL LONGER WAVE LENGTHS, SAID DETECTORS WHEN ENERGIZED PROVIDING RESPECTIVE ELECTRICAL OUTPUTS INCIDENT TO INTERCEPTION OF RESPECTIVE PORTIONS OF SAID ENERGY AND SAID SECOND MEANS INCLUDING MEANS RESPONSIVE TO SAID OUTPUTS TO CAUSE MOVEMENT OF SAID DETECTORS TO A POSITION EQUALIZING THE SAID ELECTRICAL OUTPUTS; THIRD MEANS INCLUDING MEANS TO ENERGIZE SAID DETECTORS; AND FOURTH MEANS COMPRISING RELATIVELY MOVABLE INDICATOR MEANS CONNECTED TO SAID SECOND MEANS AND MOVED THEREBY INCIENT TO MOVEMENT OF SAID DETECTORS TO SAID POSITION AND CONSTRUCTED AND ARRANGED TO INDICATE THE ABSOLUTE TEMPERATURE OF SAID BODY.