PULSED LASER LOCATION SYSTEM Russian patent published in 2020 - IPC G01S17/00 G02B6/04 

FIELD: optics; location.

SUBSTANCE: invention relates to optical location. Pulse laser location system comprises a pulsed laser, an output optical system of a transmitting channel, a photodetector for detecting the moment of the laser pulse, a one-dimensional scanning device, an optical lens of the photodetector, a computing device, an array of photodetectors including K photodetectors, as well as a fiber-optic bundle comprising K fibers. Fibers on one side are faced by their ends to corresponding photodetectors of array of photodetectors, and on the other side fibers of the bundles are mounted in a single row line of K fibers, ends of which face the output of the optical lens of the photodetector and are located in its focal plane. Output of the photodetector for detecting the moment of emission of the laser pulse is connected to the input of synchronization of the computing device. Laser synchronization input is connected to computer clock output, and outputs of K photoreceivers of photodetector array are connected to measuring inputs of computer range. Output optical system of the transmitting channel includes diffraction optics, which forms at the output of the transmitting channel a fan from K lying in one plane of collimated laser beams with divergence ϕ, angular distance between adjacent beams Ω and total opening angle of fan equal to Ω(K-1)+ϕ. Axis of rotation of the one-coordinate scanning device and larger size of the single-row line of K fibers in the focal plane of the optical lens of the photodetector device are parallel to the opening plane of the fan, and diameter of optical fiber core in bundle d and distance between centers of optic fiber ends Δ is selected from conditions d/F≥ϕ, Δ/F = Ω, where F is focal distance of lens.

EFFECT: technical result consists in enabling the possibility of achieving an angular scanning step which is greater than the angular size of the scanned beam without loss of energy of the probing radiation.

1 cl, 1 dwg