What is a spectrometer？The interaction between light and matter cause to electronic transition between the atoms of
material inside and molecules，it makes the material on absorption of light and emission, scattering wavelength and in the
intensity information occur change, the instrument of detection these changes is called a spectrometer. Therefore,the
basic function of the spectrometer is to stretch out the polychromatic light according to the different wavelength,
cooperate with all kinds of photoelectric instrument to get wavelength composition and the intensity of wavelength
composition and the original information to use for subsequent processing analysis.
Spectral analysis methods as an important means of analysis that play a great role in the aspect of scientific research,
production and quality control, etc.
When a beam of compound light entrance into the entrance slit of monochromator, first by the optical collimating lens
converge into a collimated light, then through the dispersion of diffraction grating as separate’s wavelengths, use each
wavelength to leave grating’s angle different，by focusing mirror imaging exit slit.With computer control can change the
output wavelength precisely.