“…New optical elements were called diffractive optical elements (DOE), and their sub-classes, intended for specific tasks, have received their own names: lazer light focusators [1-3, 8, 9], modans [4], Bessel-optics elements [5], compensators [6][7], and so on. Some of terms listed above, for example, the term focusator, proposed by academician A.M. Prokhorov, were adopted not only in Rus-sia, but also at the international level [10][11][12]. It became clear that we were witnessing the emergence of a new field of research at the intersection of information technologies, laser physics, optics, and microelectronics, which has become known as diffraction computer optics.…”