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State-of-the-art transfer radiometer for testing and calibration of FLIR test equipment

A spectroradiometer was modified to test the stability, uniformity, and accuracy of radiance differentials of state-of-the-art FLIR test systems. It is shown that the radiometric tests make it possible to obtain important information which cannot be obtained with conventional contact temperature probes. The output radiance of the FLIR test equipment was measured as a function of time and angle with respect to the collimator optical axis.