Patent ID: 11860095
Assignee: RADIOMETER MEDICAL APS
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 19:
20. A software product that can be loaded to a processor, the processor being configured for communicating with an optical sensor comprising a sensor layer, the sensor layer comprising a sensor surface facing towards a sample space, the sensor layer comprising a luminophor, the processor being further configured for controlling stimulus means adapted for exciting the luminophor, the software product comprising instructions for:
operating stimulus means to apply a stimulus to the luminophor in the sensor layer;
operating the optical sensor to detect luminescence emitted from the luminophor in the sensor layer in response to the stimulus as a function of time;
obtaining a time sequence of measurement values for the detected luminescence;
based on the time sequence, determining an actual value of a first parameter and an actual value of a second parameter, wherein one of the first and second parameters is sensitive to a change in refractive index across the interface between the sensor layer and the measurement chamber, and wherein the other one of the first and second parameters is not sensitive to said change in refractive index across the interface between the sensor layer and the measurement chamber;
providing feedback on a contamination state based on the actual value of the first parameter and the actual value of the second parameter.