[2] On October 1, 1933 Order №887/204 of the All-Union Trust of the Optical and Mechanical Industry of the People's Commissariat of Heavy Industry of the USSR (NKTP) was signed on the construction of a mirror reflector plant near the village of Lytkarino in the Ukhtomsky district of the Moscow Region (ZZO — the name of the plant before its renaming) for searchlight installations with mirrors up to 150 cm in diameter.

In 1939 the unfinished plant produced its first products – five searchlight mirrors with a diameter of 1.5 meters.

At that time, only factories in Leningrad and Izium produced similar products in the USSR.

In the first months of the war, the USSR was left without key manufacturers of material for the production of binoculars, periscopes for submarines, anti-aircraft sights and other important optics.

In 1972 LZOS began to develop the production of large-sized lens lenses.