TELESCOPIC SIGHT (VERSIONS) Russian patent published in 2013 - IPC G02B23/10 F41G1/38 

FIELD: physics.

SUBSTANCE: telescopic sight has series-arranged lens, first grid, erecting system consisting of a first and a second positive component, each glued from two lenses, and an eyepiece, as well as a beam splitting cube, whose beam splitting plane is in form of a diagonal face, three mirrors and a third positive component glued from two lenses. The first plane mirror, parallel to the beam splitting face of the cube, lies on the same axis with the third positive component; the second mirror is perpendicular to the first mirror in front of the focal plane of the eyepiece and the third mirror, which is inclined to the optical axis and faces the eyepiece by its reflecting surface, lies between the focal plane of the eyepiece and the second component of the erecting system. The front face of the beam splitting cube facing the lens and on which the first grid is deposited, lies in the focal plane of the lens and a second illuminated grid which is optically interfaced with the first grid is glued to its lower face. The third positive component is glued to the upper face of the cube. On an axis between the first and second mirrors, there is a fourth positive component glued from two lenses. In a second version, the second illuminated grid is glued to the upper face of the cube and the third positive component is glued to the lower face of the cube.

EFFECT: providing more accurate aiming at targets which are hard to distinguish at dusk and in dreary weather.

2 cl, 9 dwg