Infrared imaging device

An infrared imaging device comprising:

• an infrared transmission lens configured to collect infrared light emitted from an object;
• an infrared imaging element having a screen in which pixels for converting the infrared light collected by the infrared transmission lens to electric signals are arranged in a two-dimensional array;
• a signal processor configured to convert the electric signals from the infrared imaging element to digital signals;
• an optical characteristics corrector connected downstream from the signal processor, the optical characteristics corrector being configured to perform optical characteristics correction for an output of the signal processor on the basis of a dispersion degree set in advance for the infrared transmission lens;
• a reference temperature detector configured to detect a reference temperature;
• and
• a temperature measurer connected downstream from the optical characteristics corrector and the reference temperature detector, the temperature measurer being configured to perform absolute temperature conversion for the object on the basis of an output of the optical characteristics corrector and an output of the reference temperature detector.