Patent ID: 8817242

Claim:
A sensor device for spectrally resolved capture of detection radiation remitted or emitted from a value document traveling along a transport path, the sensor device comprising: a capture area through which the value document passes when transported along the transport path; an illumination device configured to selectively illuminate a face of the value document with an illumination radiation when the value document passes the capture area; a detection device arranged to detect, in at least one predefined spectral detection range and in a spectrally resolved manner, detection radiation remitted or emitted from said face of said value document when the value document is illuminated with the illumination radiation; at least one reference radiation device arranged to emit reference radiation toward the transport path to detect a motion and/or a position of the value document relative to said capture area, the reference radiation having a spectrum with a structure which is within the predefined spectral detection range and/or has at least one edge within the predefined spectral detection range, the detection device being configured to detect a property of the reference radiation; and a control/evaluation device configured to: receive signals from the detection device representing at least one property of the detection radiation, evaluate said received signals and generate evaluation signals in dependence on the result of the evaluation; and receive a detection signal from the detection device representing the property of the reference radiation detected by the detection device, check and/or adjust the detection device based on a comparison between the detected property of the reference radiation and a predefined tolerance level or predefined property value, and/or make available correction data based on the detected property of the reference radiation, said correction data being useable for evaluation of signals representing the at least one property of the detection radiation remitted or emitted from the face of the value document.