FIELD: optical instrumentation engineering. SUBSTANCE: small-size lens-collimator has two collecting meniscuses facing image with concavity. First meniscus includes biconvex lens with equal radii and biconcave lens cemented together, second meniscus is made in similar way. Difference of indices of refraction of each meniscus does not exceed 0.01 and difference of coefficients of average dispersions is 6.0. EFFECT: improved stability of operational characteristics. 2 dwg
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Authors
Dates
1994-03-30—Published
1991-04-08—Filed