METHOD FOR MEASURING THRESHOLD TEMPERATURE DIFFERENCE OF IR MEPD Russian patent published in 2018 - IPC H01L21/66 G01J5/00 

FIELD: measuring equipment.

SUBSTANCE: measurements are carried out using a black body (BB) equipped with an optical modulator with an area of the radiating area not exceeding the size of the array of photosensitive elements. When implementing the method, the specified temperature of the BB (T_sign) is set, the integral noises V_{n_ij} of all PSE are measured, the transmission spectrum of the MEPD cold light filter is measured, its short-wavelength and long-wavelength cut-off λ_s and λ_l are determined, the signals of all PSE V_{sign_ij} are measured and the value of the threshold temperature difference is calculated according to the formula , where c=2.998⋅10¹⁰ cm⋅c^-1 is the light speed; k_B=1.381⋅10^-23 W⋅c⋅K^-1 is the Boltzmann's constant; h=6.626⋅10^-34 W⋅c² is the Planck's constant; N(T_sign; λ_s; λ_l), quanta⋅c^-1⋅cm^-2 is the integral of the Planck's function, which determines the quantum irradiance in a solid angle 2⋅π in the spectral interval [λ_s; λ_l]; Z(T_sign; λ_s; λ_l) is the integral of the Planck's derived function by temperature.

EFFECT: increased accuracy and simplified measurement technique.

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