In a plate reader, what is the function of the detector element?

The detector element in a plate reader serves the crucial function of collecting light photons that are emitted or transmitted by the sample being analyzed. This is a key step in obtaining measurable data from the sample, as the intensity of the collected light correlates with the concentration of the analyte present. Once the photons are collected, the detector converts this light into an electrical signal that can be quantified and analyzed further. The accurate detection of light is essential for reliable readings, making this function core to the operation of plate readers in various applications, such as biochemical assays and molecular assays.