In field wavelength calibration of a wavelength scale of a spectrometer device

A spectrometer device for obtaining spectroscopic information on at least one object, the spectrometer device comprising:

• i. at least one light source for generating illumination light for illuminating the object, the light source comprising at least one light-emitting diode and at least one luminescent material for light-conversion of primary light generated by the light-emitting diode;
• ii. at least one detector for detecting light and, thereby, generating at least one detector signal;
• and
• iii. at least one evaluation unit configured for deriving the spectroscopic information on the object from the at least one detector signal, wherein the evaluation unit is configured for deriving the spectroscopic information on the object by taking into consideration wavelength correction information, wherein the evaluation unit is configured for determining the wavelength correction information by using an emission peak position of at least one emission band in a power spectral density distribution over the wavelength of the light generated by the light source, wherein the luminescent material is phosphor, wherein the emission band is a characteristic of the secondary light generated by the material of the phosphor.