AN ARRANGEMENT FOR RECORDING AN IR-IMAGE

摘要

The invention relates to an arrangement for recording an IR-image of an object, comprising a focal plane array (FPA) (18) of IR-detectors and an optic (1-7) which images the object on the focal plane IR-detector array. At least one temperature reference (10, 11) is arranged in the beam path to the focal IR-detector array. At least one IR-reference detector (12, 13) is allotted to reference purposes among the IR-detector elements in this array. Each temperature reference is coordinated with at least one of the IR-reference detector elements, so that each of the IR-reference detector elements is impinged upon by radiation deriving essentially solely from one of the temperature references. An IR-detector reference output signal is intended to be produced for each temperature reference. Each IR-reference output signal is intended to set an individual reference level for the output signals from the remaining IR-detector elements in the IR-detector array.