Purpose:
- The main optical element for the emission of a given wavelength in different spectral optical devices (monochromators, spectrographs) intended for scientific research and production needs.
- Spatial spectral filtration of radiation.

Technologies used:
- Technology of manufacturing by a method of cutting by a diamond cutter on a high-precision dividing machine with interference control.
- Technology of vacuum deposition of reflective metal coatings.
- Technology of copying diffraction elements using polyester resins.

Benefits:
- High diffraction efficiency.