OBJECTIVE LENS FOR NEAR INFRARED SPECTRUM Russian patent published in 2010 - IPC G02B13/14 G02B9/34

Abstract RU 2384870 C1

FIELD: physics, optics.

SUBSTANCE: objective lens can be used in night vision devices (NVD). The objective lens has four components. The first and third components are biconvex lenses. The second component is in form of two meniscuses glued together, with the convex side facing the object and consisting of a biconvex and a biconcave lens. The fourth component is a biconcave lens. The first component, the first lens of the second component and the fourth component are made from glass with density of not more than 2.6 g/cm³.

EFFECT: reduced weight and higher image quality.

2 dwg, 1 tbl

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RU 2 384 870 C1

Authors

Skljarov Sergej Nikolaevich

Dates

2010-03-20—Published

2008-12-18—Filed