Apparatus for absorption spectra analysis

Claim 1

APPARATUS FOR ABSORPTION SPECTRAL ANALYSIS COMPRISING (A) A HOUSING, (B) TWO RADIATION SOURCES SECURED TO SAID HOUSING ADAPTED TO RADIATE CONTINUOUSLY OVER A SELECTED SPECTRAL RANGE, (C) ELECTRICAL CIRCUITRY MEANS OPERATIVELY CONNECTED TO SAID RADIATION SOURCES ADAPTED TO CONTINUOUSLY FLUCTUATE THE RADIATION INTENSITY OF EACH OF SAID RADIATION SOURCES, (D) INCLUDING ELECTRICAL MEANS OPERATIVELY ASSOCIATED WITH SAID ELECTRICAL CIRCUITRY MEANS ADAPTED TO REGULATE THE FREQUENCY PHASE RELATIOHSHIP BETWEEN SAID TWO RADIATION SOURCES WHEREBY SAID TWO RADIATION SOURCES RADIATE 180* OUT OF PHASE WITH ONE ANOTHER, (E) MEANS WITHIN SAID HOUSING POSITIONED IN OPTICAL ALIGNMENT WITH EACH OF SAID RADIATION SOURCES ADAPTED TO COLLIMATE THE RADIATION EMITTED THEREFROM, (F) FIRST RADIATION SELECTING MEANS SECURED IN SAID HOUSING IN OPTICAL ALIGNMENT WITH ONE OF SAID RADIATION SOURCES ADATPED TO OPTICALLY FILTER THE RADIATION EMANATING THEREFROM WHEREBY A SELECTED BAND OF RADIATION WHICH IS A REFERENCE BEAM PASSES THROUGH SAID FIRST RADIATION SELECTING MEANS, (G) SECOND RADIATION SELECTING MEANS SECURED IN SAID HOUSING IN OPTICAL ALIGNMENT WITH THE OTHER OF SAID RADIATION SOURCES ADAPTED TO OPTICALLY FILTER THE RADIATION EMANATING THEREFROM WHEREBY A SELECTED BAND OF RADIATION WHICH IS AN ANALYTICAL BEAM PASSES THROUGH SAID SECOND RADIATION SELECTING MEANS, (H) AND STATIONARY BEAM-SPLITTING MEANS SUPPORTED IN SAID HOUSING AND POSITIONED IN OPTICAL ALIGNMENT WITH AND IN ANGULAR RELATION TO BOTH SAID FIRST AND SAID SECOND RADIATION SELECTING MEANS ADAPTED TO SPLIT THE RADIATION INCIDENT THEREUPON FROM EACH OF SAID FIRST AND SAID SECOND RADIATION SELECTING MEANS INTO TWO OPTICAL PATHS SPACED 90* APART WITH RESPECT TO EACH OTHER AND EACH CONSTITUTED OF SAID REFERENCE BEAM AND SAID ANALYTICAL BEAM, (I) A SAMPLE SUPPORT MEANS IN SAID HOUSING ADAPTED TO SUPPORT A SPECIMEN MATERIAL IN OPTICALI ALIGNMENT WITH AND TRANSVERSELY OF ONE OF SAID TWO OPTICAL PATHS WHEREBY ONE OF SAID TWO OPTICAL PATHS PASSES THROUGH SAID SPECIMEN, (J) AND DETECTOR MEANS SUPPORTED IN SAID HOUSING ADJACENT SAID SAMPLE SUPPORT MEANS AND ADAPTED TO GENERATE AN OUTPUT ELECTRICAL SIGNAL RESPONSIVE TO THE RADIATION IMPINGING THEREUPON FROM SAID SPECIMEN MATERIAL IN SAID SAMPLE SUPPORT MEANS WHEREBY SAID SIGNAL IS OF A FREQUENCY CORRESPONDING TO THE FREQUENCY OF RADIATION OF SAID TWO RADIATION SOURCES, (K) MEANS TO COMPARE THE AMPLITUDES OF SAID FLUCTUATING OUTPUT ELECTRICAL SIGNAL.