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

US12332166B2 · kind B2 · utility

Assignee

• Carl Zeiss Spectroscopy GmbH · DE

Inventors

• Peter Westphal · Jena, DE
• Daniel Bublitz · Glinde, DE
• Karsten Lindig · Erfurt, DE

Key dates

• Filing date: Jun 8, 2023
• Grant date: Jun 17, 2025
• Expiry date: Nov 3, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/127
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A measurement device for spectroscopic constituent analysis includes a control unit, a light source, a sample holder arranged in the beam path of the light source, and a spectral measurement module. The measurement module comprises at least one photosensor with organic photodiodes arranged on a substrate and a temperature sensor arranged at the photosensor. During a sample measurement, a method using the measurement device comprises: detecting an actual temperature at the photosensor; pivoting-in a dark reference sample and measuring a dark reference value; pivoting-in a bright reference sample and measuring a bright reference value; measuring a spectral value of the sample and correcting the spectral value by means of a correction calculation by way of the control unit using the dark reference value, the bright reference value, the spectral value of the sample, the temperature and using values which were determined in a pre-calibration and stored in the control unit.