Analysis of changes in the detection range of radiation by photodetector when using a matrix photodetector

Matrix photodetectors are increasingly used in optoelectronic systems. However, their use leads to a decrease in the detection range of radiation from the source in comparison with single-element photodetectors. This is due to a decrease in the illumination of the photodetector due to an increase in its geometric dimensions.

Purpose is Analysis of changes in the detection range of radiation from a point source by a photodetector when using a matrix photodetector in comparison with a single-element photodetector.

Analytical expressions are obtained for determining the detection range of radiation from a point source using a photodetector with a single-element photodetector and with a matrix photodetector. The analysis of changes in the registration range is carried out, on the basis of which methods of solving this drawback are proposed. An example of calculation by the obtained expressions is given. The calculation result shows that the detection range of radiation by a photodetector when using a matrix photodetector is much shorter than when using a single-element photodetector.

The obtained analytical expressions make it possible to estimate the range of registration of radiation from a point source by a photodetector with a matrix photodetector.