TELEPHOTO LENS Russian patent published in 1997 - IPC

Abstract RU 2079863 C1

FIELD: high-resolution aerial survey. SUBSTANCE: telephoto lens composed of two groups of lenses. First group has five lenses placed in sequence in path of ray: first one - biconvex lens, second one - biconcave lens, third one - biconvex lens, fourth one - biconcave lens and fifth one - positive meniscus facing image with concavity. Second group includes single biconvex and biconcave lenses. EFFECT: enhanced operational characteristics. 2 dwg

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RU 2 079 863 C1

Authors

Nekrasov V.V.

Tokarev A.A.

Pavlin V.V.

Dontsov G.A.

Dates

1997-05-20—Published

1994-09-29—Filed