Sensor device for the spectrally resolved capture of valuable documents and a corresponding method

A sensor device for spectrally resolved capture of optical detection radiation which emanates from a value document transported through a capture area of the sensor device in a predefined transport direction, comprising:

• a detection device configured to detect spectrally resolved detection radiation in at least one predefined spectral detection range and to output detection signals which represent at least one property of the detected detection radiation;
• at least one reference radiation device which emits optical reference radiation which is coupled into a detection beam path of the detection device at least partly in dependence on the position of a value document relative to the capture area, and which has a spectrum with at least one narrow band which is within the predefined spectral detection range, and/or a spectrum with at least one edge which is within the predefined spectral detection range, and which is detected by the detection device so that said detection signals also represent at least one property of the reference radiation;
• and
• a control and evaluation device configured to use a part of the detection signals which represent at least one property of the reference radiation to check and/or adjust the detection device and/or to evaluate a part of the detection signals which represent the at least one property of detection radiation emanating from a value document.

A sensor device for spectrally resolved capture of optical detection radiation which emanates from a value document transported through a capture area of the sensor device in a predefined transport direction, comprising:

• a detection device configured to spectrally resolve detection of detection radiation in at least one predefined spectral detection range and to output detection signals which represent at least one property of the detected detection radiation;
• at least one reference radiation device which has a surface-emitting laser diode or a DFR or DBR laser diode as the reference radiation source and which emits optical reference radiation which is coupled into a detection beam path of the detection device at least partly independently of or in dependence on the position of a value document relative to the capture area, and which has a spectrum with a narrow band which is within the predefined spectral detection range, and which is detected by the detection device so that said detection signals also represent at least one property of the reference radiation;
• and
• a control and evaluation device which is configured to use a part of the detection signals which represent the at least one property of the reference radiation to check and/or adjust the detection device and/or to evaluate the part of the detection signals which represent the at least one property of detection radiation emanating from a value document.

A method for checking and/or adjusting a detection device of a sensor device for spectrally resolved detection of optical detection radiation in at least one predefined spectral detection range and emission of detection signals which represent at least one property of the detected detection radiation, and/or for making available data for evaluating detection signals, comprising:

• transporting a value document through a capture area of the sensor device in a predefined transport direction;
• generating optical reference radiation which is coupled at least partly into a detection beam path of the detection device in dependence on the position of a value document relative to the capture area, wherein the reference radiation has a spectrum with a narrow band which is within the predefined spectral detection range, and/or at least one spectrum with an edge which is within the predefined spectral detection range;
• detecting said coupled in reference radiation by said detection device and including in said detection signals a representation of at least one property of the coupled in reference radiation;
• and
• using the detection signals to check and/or adjust the detection device and/or for making available data for evaluating detection signals which represent the at least one property of detection radiation emanating from the value document.