FIELD: examination and analysis of microscopic structures. SUBSTANCE: objective has four components. First component contains from 0 to 3 lenses positioned in succession. Second component is lens triply glued of two negative lenses with one positive lens positioned between them. Third component is single positive lens. Fourth component is made as negative meniscus facing the image with its concave surface. Optical materials for lenses of second component are selected in compliance with definite correlations. EFFECT: higher results of examination. 1 dwg , 1 tbl
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RU2075771C1 |
