TEC2000 is a cooling type miniature fiber optic spectrometer based on symmetrical CT optical path design. It has a compact structural design, configurable spectral range, and adopts N A0.11, High resolution, optimal up to 0.1nm; Low stray light,~5 ‰. Equipped with a back illuminated cooling CCD, it has good spectral response stability and reproducibility, suitable for multiple industrial field measurements such as laser measurement, plasma emission spectroscopy measurement, color measurement, absorbance measurement, and Raman measurement. It is a high-performance fiber optic spectrometer for scientific research and development.