OBJECTIVE LENS Russian patent published in 1995 - IPC

Abstract RU 2035753 C1

FIELD: optical instrumentation engineering. SUBSTANCE: objective lens has protective glass, first component in the form of biconcave lens, second component, fourth component, additional component in the form of positive biconvex lenses, third component in the form of biconcave lens, and light filter. Objective lens angle of view is 60 deg., entrance pupil size is 3 mm, clear aperture of first surface is 2.9 mm, objective lens length from first surface of protective glass to image plane is 2.4 of lens focal distance. EFFECT: improved design. 1 dwg

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RU 2 035 753 C1

Authors

Sokol'Skij M.N.

Lapo L.M.

Mitroshin V.T.

Kuzin V.P.

Dates

1995-05-20—Published

1992-04-29—Filed