22 September 1983 Calibration Of A System Of Portable Infrared Collimator Test Sources
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Abstract
Infrared sensing equipment is often calibrated by using a blackbody and collimator to provide a standard source to simulate an infinitely. distant target. The calibration of these blackbody-collimators to reasonable accuracy is quite difficult, and therefore should be done by actually measuring the irradiance produced with a radiometer. The radiometer itself must be calibrated with a blackbody-collimator, but only this one standard source need be maintained to high accuracy. Among the characteristics that must be carefully understood are the goniometric uniformity of the standard blackbody radiance, the spatial and goniometric uniformity of the radiometer response and the independence of these variables from the wavelength of the radiation. The application of this idea to the calibration of a large number of infrared target simulator sources is described along with many of the practical problems this method makes apparent that would otherwise be undetected.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
John L. Grangaard, John L. Grangaard, } "Calibration Of A System Of Portable Infrared Collimator Test Sources", Proc. SPIE 0416, Applications of Optical Metrology: Techniques and Measurements II, (22 September 1983); doi: 10.1117/12.935935; https://doi.org/10.1117/12.935935
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