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The recent years, the diffraction grating technology is valued people's day by day.The diffraction grating took one kind of precision extremely high chromatic dispersion part, is closely affecting the modern spectrum instrument equipment, simultaneously with geological, metallurgy, petroleum chemical industry, astronomy, agricultural, medicine, atomic energy, astronautics as well as other science and technology domain development close correlation.

In recent years, increasing attention technology. As a kind of high precision grating dispersion components, closely affecting spectral instrument equipment, modern and geology, metallurgy, petrochemical, astronomy, agriculture, medicine, atomic, aerospace and other scientific technology is closely related to the development of the field.