PLANAPOCHROMATIC FAST MICROSCOPE OBJECTIVE Russian patent published in 1997 - IPC

FIELD: transmitted light microscopes for visual observation and photographing of biological objects in usual light and in light of their own luminescence. SUBSTANCE: the objective has six components, which represent a positive meniscus, with its concavity facing the object; the second positive component is cemented of negative meniscus and positive biconvex lenses; the three-cemented component of two positive lenses with a negative lens placed between them, and then three successive splices of two lenses: a biconvex positive lens and a negative lens. The choice of optical materials of lenses satisfies the following requirements: νp2,3,4,5

≥ 85; νn2,4,5≥ 40; νⁿ3,6 ≅ 35, where ν^p, νⁿ- - dispersion factors of positive and negative lenses, respectively for the mentioned components. EFFECT: improved design. 2 dwg