Spectrometer optics comprising positionable slots and method for the fully automatic transmission of calibrating adjustments between spectrometers equipped with optics of this type
The invention relates to spectrometer optics with a beam path from a beam source to a number of electro-optical sensors without spatial resolution, the beam path comprising an entry slot, a dispersive element, and a number of exit slots arranged on a focal curve, wherein furthermore: a first actuator for changing the angle of incidence ε between the beam from the entry slot to the dispersive element and from the normal to the dispersive element; a number of second actuators for moving the exit slots tangentially with respect to the focal curve or in a peripheral direction along the focal curve and a controller which is adapted to control the first actuator and the second actuators to carry out a calibration is provided.
1. A method for calibrating spectrometer systems comprising sensors without spatial resolution, characterized by the following steps:
a. determining a device-independent calibration function K u on a reference spectrometer R;
b. transmitting the device-independent calibration function K u to a spectrometer G to be calibrated;
c. determining a respective displacement vector for an entry slot and exit slots of the spectrometer G;
d. moving the entry slot and the exit slots into desired positions as a function of the displacement vectors;
e. determining an intensity correction function which, after positioning of the entry slot and the exit slots, allows raw intensities for any desired sample P measured on a spectrometer G to be converted such that they match raw intensities for P measured on a reference device R.
2. The method as claimed in claim 1 , further comprising:
changing the angle of incidence of optics and using environment information thus obtained to calculate a vector K′ G that describes the state of the spectrometer G.
3. The method as claimed in claim 1 , further comprising:
displacing the entry slot and the exit slots as a function of a vector K′ G , which contains desired positions for the entry slot and exit slots, such that same spectral segments pass through the exit slots of optics O G of the spectrometer G as through corresponding exit slots of optics O R of the reference device R.
4. The method as claimed in claim 1 , characterized in that for each exit slot of the spectrometer G, a vector K′ G contains coefficients of an intensity transmission polynomial which, after positioning of the entry slot and the exit slots, allows the raw intensities measured for the desired sample P on the spectrometer G to be converted such that they match the raw intensities for P measured on the reference device R.
5. The methods as claimed in claim 1 , further comprising assessing a calibration capacity to calculate a vector K′ G for spectrometer G.