We produce high-precision polarizing prisms from Iceland spar (calcite CaCO 3 ), crystalline quartz and magnesium fluoride crystals MgF 2 for high-power laser technology, ultra-precise polarimetry, ellipsometry, polarization measurements in astronomy, medicine, biology and other branches of science and technology. Our optical elements are part of many optical devices developed both in Russia and abroad. Our customers are the largest domestic and foreign research institutes, as well as private companies.