LASER RANGEFINDER WITH TEST HEAD Russian patent published in 2021 - IPC G01C3/08 G01S17/02 

FIELD: laser ranging.

SUBSTANCE: invention relates to laser ranging, to pulsed laser rangefinders and locators. A laser rangefinder with a test emitter, containing the main and test emitters of different power with triggering schemes, a photodetector channel including a photodetector with a lens, a threshold device connected at the output of the photodetector and connected at the output with a control circuit and a time interval meter, a laser diode, a cylindrical microlens with an aperture angle in the cross section of the microlens is installed in front of the emitting area, exceeding the maximum divergence of the laser beam at the output of the laser diode, and with a focal length providing the minimum ratio of the divergence of the beam after it, a microcollimator is introduced after the cylindrical microlens, providing the divergence at the output of the probe emitter.

EFFECT: ensuring a safe mode of operation of the photodetector while maintaining the required probability of reliable measurements in a wide range of ranges.

1 cl, 3 dwg