OPEN SIGHT Russian patent published in 2012 - IPC G01C3/08 G02B23/10 

FIELD: physics.

SUBSTANCE: open sight has a range finder with a receiving channel, a sighting channel, an input lens which is common for the receiving channel of the range finder and the sighting channel, a spectrum divider which splits the laser and the sighting light flux, and a reference mark with illumination. The spectrum divider is in form of spectrum dividing prism on one face of which there is a field stop of the receiving channel of the range finder and a reference mark, and a spherical mirror is glued to the other face. The radius of the spherical mirror and its position on the prism are such that there is optical interfacing of the field stop and the reference mark.

EFFECT: high accuracy of monitoring parallelism of optical axes of the receiving channel of the ranger finder and the sighting channel and simple design of the open sight.

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