LASER LONGITUDINER WITH COMBINED LASER RADIATOR Russian patent published in 2017 - IPC G01C3/08 

FIELD: physics.

SUBSTANCE: laser rangefinder with a combined laser emitter contains a receiver and a transmitter including a lens with a focal length F_o. Also, the range finder contains at least two laser emitters, each of which is a semiconductor laser diode whose radiating area is displaced perpendicular to the optical axis of the lens by a distance of Y. A cylindrical lens with a focal length f is set before each emitting area, the focus of the cylindrical lens is shifted parallel to the optical axis of the lens by a distance z1 from the radiating area in the direction of the focus of the lens so that the image of the radiating pad coincides with the focal plane of the lens, the center of the cylindrical lens is displaced perpendicular to the optical axis of the lens and parallel to the radiating area by a distance Y+δY to the side from the optical axis of the lens, the nominal value δY is defined by the expression , and the cylindrical lenses are able to move parallel to the axis of the lens to the maximum distance δz so that the conditions ; , where ΔY_max and ΔX_max are the tolerances for the transverse ΔY and longitudinal ΔX values of the deviations of the radiating area image from the focus of the lens.

EFFECT: ensuring accurate alignment of radiation beams of two or more lasers with compactness and simplicity of the device.

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