Method for pre-calibrating and correcting measurement errors of a spectroscopic measurement device, and measurement device

A method for pre-calibrating a spectroscopic measurement device comprising a control unit, a light source, a sample holder arranged in the beam path of the light source and defining a measurement location, and a spectral measurement module which has a photosensor with a plurality of organic photodiodes arranged on a substrate and with a temperature sensor, with calibration values being determined at the measurement location and reference values being determined in a reference measurement plane, the said method comprising the following steps:

• i.) arranging a bright calibration sample at the measurement location and determining a bright calibration value by measuring a deflected radiation by means of the photosensor;
• ii.) arranging a dark calibration sample at the measurement location and determining a dark calibration value by measuring a deflected radiation by means of the photosensor;
• iii.) arranging a bright reference sample in the reference measurement plane and determining a bright reference value by measuring a deflected radiation by means of the photosensor;
• iv.) arranging a dark reference sample in the reference measurement plane and determining a dark reference value by measuring a deflected radiation by means of the photosensor;
• v.) recording a dark current signal when the light source is switched off, and
• vi.) repeating steps i. to v. at different temperatures along a predetermined temperature curve, with the temperature and a bright reference value, a bright calibration value, a darkness reference value, a darkness calibration value, and a dark current signal being recorded for each temperature value;
• and
• vii.) storing the determined calibration and reference values and the control unit.