Analysing Spectral Irradiance at a Given Point on the Sensor Matrix

This article presents one possible method for modelling the electromagnetic radiation spectrum. This work aims to model a radiation source by combining two spectrums and obtaining a different spectrum as a result. To achieve this, the spectrum of a commercially available LED and a filter that transmits electromagnetic radiation at wavelengths above 475 nm were used. The article presents a methodical approach to designing the resulting spectral irradiance graph and the individual component spectral irradiance graphs. The originality of this method lies in transmitting the spectrum of one diode and combining it with an unfiltered diode. The irradiance values obtained on the sensor array depend on the electromagnetic radiation power of the light source and the distance between the sensor array and the light source’s centre. The simulation results for the combined spectrum were 13 W/m2. This work may influence the design of new industrial illuminators.