| 摘要 |
optics. SUBSTANCE: telescopic optical system includes three lenses: biconcave lens, single positive meniscus facing image with convexity and plano- convex lens. All three lenses can be fabricated from one material. Visible magnification of system is 0.1, field of vision is 40 angular minutes, diameter of exit pupil is 4.0 mm. EFFECT: high-quality image. 4 cl, 1 dwg, 2 tbl
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