Patent ID: 7428051

Claim:
A device for IR-spectrometric analysis of a solid, liquid or gaseous medium, comprising: a process probe, which has a reflection element which comprises a microprism; a linear variable filter, at least one detector element; and a control/evaluation unit, wherein: at least one radiation source is provided, whose electromagnetic radiation is coupled into said reflection element, at least one waveguide is provided, having an input section and an output section; said input section receives the electromagnetic radiation from said reflection element; the electromagnetic radiation is conducted via the output section of said waveguide into at least one defined area of said linear variable filter; said detector element receives the electromagnetic radiation from said linear variable filter; said detector element is arranged to be movable relative to said linear variable filter over essentially the length of said linear variable filter; and said control/evaluation unit determines the spectrum of the medium on the basis of the measured values delivered from said detector element.