FIELD: optical instrument engineering. SUBSTANCE: objective has two components, both are positive. Components are made in form of single menisci, which are turned with their concavities to image. The components are made of germanium. Aspherical surfaces of the components are turned one to the other. Focal powers of the first and the second components are equal to 0.4 and 1.1 focal power of the objective correspondingly. EFFECT: improved precision. 4 dwg
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