SINGLE-PUPIL LASER-RANGING SIGHT Russian patent published in 2015 - IPC F41G3/06 

FIELD: physics.

SUBSTANCE: single-pupil laser-ranging sight includes one composite channel, which includes a lens, a target reticle, a lens erecting system, a translucent indicator and an eyepiece, arranged in series. The plane of the aiming signs of the reticle is superimposed with the back focus of the lens and the front focus of the lens erecting system, and the plane of the luminescent signs of the translucent indicator is superimposed with the back focus of the erecting system and the object plane of the eyepiece. The device includes, between the lens and the reticle, a spectrum-splitting cube, the spectrum-splitting plane of which is in the form of a diagonal face arranged such that the reticle, the erecting system, the translucent indicator and the eyepiece operate in the transmitted beam, and in the beam reflected from the spectrum-splitting plane there is a divergent lens which forms, together with an input lens, an afocal optical system, a quarter-wave retarder made of quartz, a polarisation splitter cube which divides the radiating and receiving channels of the range-finder and is mounted at a position where its reflecting plane is parallel to the spectrum-splitting plane of the spectrum-splitting cube, and two identical convergent focusing lenses, which form the same focal distance of the radiating and receiving channels of the laser range-finder, after each of which there is a laser emitter or a laser radiation detector.

EFFECT: facilitating sight shooting while enabling range measurement using a single-pupil optical sight-optical ranging system, having one common entrance window for both the sight visual channel and the transmitting and receiving channels of the range-finder, and which ensures minimal energy loss during transmission through the optical channel.

1 dwg, 1 tbl