ELECTRONIC LEVELLING DEVICE Russian patent published in 2025 - IPC G01C5/02 

FIELD: measuring.

SUBSTANCE: invention relates to geodetic instruments and can be used when performing works on geodetic and geotechnical monitoring in automatic and manual modes, on geometric levelling, when measuring slopes, horizons, distances in topography and geodesy. Electronic levelling device comprises a lens and a matrix photodetector, a levelling device for preliminary levelling of the electronic levelling device, a focusing drive, a data processing computer and a screen with a light shield, additionally, a flat mirror-compensator of inclination of the sighting axis in the vertical plane, a pendulum, a pendulum disk rigidly mounted on the axis of rotation of the pendulum coaxially to it and connected by a thread to the disk of the flat mirror, which is rigidly mounted on the axis of rotation of the flat mirror coaxially to it, a pendulum damper, ambient light sensor, wherein the flat mirror is installed in the middle position at angle of 45° to the optical axis of the lens, and the lens is mirror-lens and comprises: a negative meniscus, the annular central zone on the second surface of which is made with a mirror coating, a main mirror made in the form of a Mangin mirror, a correction component made either in the form of a negative convex-concave lens, or in the form of two lenses.

EFFECT: improving measurement accuracy, providing small-size design and automation of work performance.

1 cl, 3 dwg, 4 tbl