BINOCULAR OBSERVATION SYSTEM Russian patent published in 2005 - IPC

FIELD: optics.

SUBSTANCE: device has collimation objective, light splitter, and two objectives of telemetric system symmetrically placed relatively to axis of collimation objective. Each of telescopic systems has objective, deflector and ocular. Objective of each telescopic system consists of biconvex lens and positive meniscus, while said meniscus is mounted before deflector and directed to the latter by its concave portion. Focusing distances of telescopic system objective, biconvex lens, positive meniscus and thickness of biconvex lens, positive meniscus and air space between them are connected by relations, given in invention formula.

EFFECT: higher efficiency.

4 cl, 1 dwg