Presented is a thermal image sensor calibration device for preventing a temperature disturbance between a black body and an external environment, comprising: a first temperature control device for controlling the temperature of the black body; an infrared sensor unit for sensing the temperature of the black body; a chamber for accommodating the black body and the infrared sensor unit; and a cover unit which maintains the black body in an airtight state, and which includes, on one surface thereof, a window for allowing infrared rays emitted from the black body to pass therethrough.
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