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When the device is
used at a low
temperature, the
imaging quality is
poorer than that at
normal temperature.
At temperatures above 0
℃
, temperature-rise varies with the observed
objects (environment and background) due to different heat
conductivity coefficients. As a result, high-temperature contrast occurs
and the image quality is better.
At low temperatures below 0
℃
, the observed targets cool down to a
similar temperature because of reduced temperature contrast.
Therefore, the image quality (details in particular) is poor, which is a
characteristic of thermal imaging devices.
