Testing Thermal Imaging Systems

T. L. Williams; R. Hunt

doi:10.1117/12.931860

29 October 1981 Testing Thermal Imaging Systems

T. L. Williams, R. Hunt

Proceedings Volume 0274, Assessment of Imaging Systems II; (1981) https://doi.org/10.1117/12.931860
Event: Assessment of Imaging Systems: Visible and Infrared, 1981, Reading, United Kingdom

Abstract

The design and performance of equipment for assessing complete thermal imaging systems is described. The equipment consists of a source/target unit plus control electronics which can be used for measuring the MRTD or MDTD of thermal imager systems. The system can achieve a temperature-difference resolution of better than 0.01°C and response times of the order of 10-15 seconds. Facilities are available for generating linear temperature ramps and for remote changing of targets. A scanning microphotometer using a CCD array has also been developed for analysing the output of the display of a Thermal imager. In conjunction with the source/target unit it can be used for measuring the signal transfer function (SiTF) and MTF of the thermal imageing system. A minicomputer is used for processing the data from the microphotometer. A radiometer is required to calibrate the test equipment and the design of a suitable unit which operates from the same minicomputer as the microphotometer, is outlined briefly.

Citation Download Citation

T. L. Williams and R. Hunt "Testing Thermal Imaging Systems", Proc. SPIE 0274, Assessment of Imaging Systems II, (29 October 1981); https://doi.org/10.1117/12.931860

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