“…In order to correctly assess temperature distribution on the housing of electronic components, it is necessary to take into account all factors that can influence the measurement [ 6 , 7 , 8 ]. The most important of them include the value of the emissivity coefficient ε [ 9 ], the reflected temperature ϑ r [ 10 ], the distance between the lens and the observed object d [ 11 ], the ambient temperature ϑ a [ 12 ], the temperature of the external optical system [ 13 ], the transmittance of the external optical system [ 14 , 15 ], the relative humidity ω [ 16 ], the viewing angle β [ 7 ], and the sharpness of the recorded thermogram [ 17 , 18 , 19 ]. An assessment of the influence of the abovementioned factors on the accuracy of the thermographic temperature measurement of small-sized electronic components is possible thanks to the use of a microscopic thermography stand.…”