Purpose:
- control with interferometric accuracy of the shape of almost all types of aspherical surfaces used in optical instrumentation;
- control of alignment of lens optical systems at intermediate and final stages of their assembly;
- Control of alignment of ground-based and space-based mirror telescopes;
- control of the amount of lens de-centering;
- measurement of the radii of curvature of spherical and cylindrical surfaces of optical parts;
- Creation of movie forms (synthesized hologram lenses - holographic analogues of classical lens and mirror lenses in optical instruments of various purposes);
- use of SGSE as the main lenses or compensators in the object branch of holographic systems of interference and shadow devices intended for visualization of gas flows in wind tunnels and ballistic tracks;
- expansion and contraction of the working spectral region of optoelectronic devices;
- a visual demonstration and the possibility of studying certain types of aberrations for educational and research purposes as part of a training set of holographic optical elements.

Benefits:
- control of the shape of aspherical surfaces, control of alignment of lens optical systems at intermediate and final stages of their assembly - creation of precision and universal methods and means of control;
- Control of alignment of ground and space-based mirror telescopes - creation of precision, reliable, compact and operational methods and means of control;
- Measurement of radii of curvature of spherical and cylindrical surfaces of optical parts - creation of contactless "holographic test glasses";
- the use of SGAE opens the possibility of creating shadow and interference devices for visualizing gas flows in wind tunnels and ballistic tracks in a working field up to 1000 mm in size;
- Creation of collimator lenses - the diameters of these lenses are 400 - 1000 mm with a relative aperture of up to 1: 1;
- expansion of the working spectral region of optoelectronic devices - alignment of the dependence of diffraction efficiency on the wavelength within the entire working spectral range is achieved;
- compression of the working spectral region - one can obtain the properties of a band-pass spectral filter with a multiple decrease in the spectral half-width.

Circular SGOE are produced with a diameter of up to 600 mm and a spatial frequency of up to 1500 mm-1 on substrates with flat and convex working surfaces, cylindrical SGAEs with dimensions up to 70x100 mm.

The error in the formation of a given wave surface to 0.05λ, where the wavelength λ = 633 nm, with the largest spatial frequency up to 100 mm-1