METHOD OF CHANGING DIRECTION OF AXIS OF SIGHT IN OPTICAL SIGHT AND VARIABLE MAGNIFICATION SIGHT IMPLEMENTING SAID METHOD Russian patent published in 2013 - IPC G02B23/10 F41G1/38 

FIELD: physics.

SUBSTANCE: sight has an objective lens, a collecting lens, a plane-parallel plate with a pointing mark and scales, an erecting system, a field stop and an ocular. In the objective lens, aberrations are corrected within an angular field equal to the sum of the greatest value of the angular field of the sight and the greatest value of change of the direction of the axis of sight. The plane-parallel plate is placed in the plane of a first or, in the second version, a second intermediate image. Components of the erecting system and, in the first version, the plane-parallel plate are differentially moved so as to provide displacement of the main points of components of the erecting system and, in the first version, vertices of the aiming mark in a direction perpendicular to the optical axis. The displacement values are proportional to distance from the axial point of the second plane of the real image to the corresponding displaced components.

EFFECT: increasing differential magnification up to five times, increasing magnification up to 25 times, increasing pupil withdrawal of at least 90 mm and change of direction of the axis of sight by an angle greater than the value of the angular field of the sight with the greatest value while maintaining a quality image.

10 cl, 6 dwg, 2 tbl