FIELD: ophthalmology. SUBSTANCE: unit has two or more optical elements, provided with phase microreliefs. The elements have central and reference areas, and a substrate. All elements and substrate are connected together along the surfaces of reference areas, moreover, optical axes of central parts are brought into coincidence with optical axis of the unit. Surfaces provided with phase microreliefs join surfaces of the substrate. EFFECT: improved reliability of operation. 3 dwg
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