Compact spectrometer

A spectrometer device for analyzing a sample, comprising:

• at least one light emitting element configured for emitting light in a measurement spectrum:
• at least one reference light emitting element configured for emitting reference light in a reference spectrum, wherein the at least one reference light emitting element is separate from the at least one light emitting element;
• at least one interface element configured for receiving light of the measurement spectrum and transferring light of the measurement spectrum to at least one detector array, wherein the interface element is further configured for blocking reference light of the reference spectrum:
• at least one segmented aperture configured for acting as one or more of an angle filter and a stray light filter:
• at least one optical separation element;
• and
• the at least one detector array comprising a plurality of detector elements, wherein the detector array is configured for generating at least one detector signal according to an illumination of the plurality of detector elements by one or more of the measurement spectrum and the reference spectrum, wherein each detector element is configured for receiving at least a portion of one or more of the measurement spectrum and the reference spectrum.