LASER RANGEFINDER Russian patent published in 2017 - IPC G01C3/08 

FIELD: measuring equipment.

SUBSTANCE: laser rangefinder includes a receiving device including a receiving lens, and a photodetector, and a transmitter including a lens, and two laser emitters, the output radiation beams of which are polarized and aligned by an optical adder in the form of a birefringent plane-parallel plate. Herewith the laser emitters are located on the side of one of its faces so that their optical axes are parallel, and the planes of the laser radiation polarization are mutually perpendicular. In front of the laser emitters cylindrical lenses are installed, each cylindrical lens is fixedly connected to the laser diode, forming a laser module. At least, one of the laser modules has the ability to move perpendicular to the optical axis of the lens and perpendicular to the geometric axis of the cylindrical lens and is able to fix in the working position with a specified maximum permissible error Δϕ of mutual angular misalignment of the optical axes of the probing radiation output beams provided by an increase in the optical system of the transmitting device.

EFFECT: increasing the range and the noise immunity of the laser rangefinder.

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