COMPACT LIDAR Russian patent published in 2021 - IPC G01S17/00 

FIELD: radar technology.

SUBSTANCE: invention relates to lidars with laser radiation control without moving parts with the ability to control the intensity, frequency, phase characteristics and direction of light radiation and can be used in a number of special areas: optical location, robotic complexes, automotive industry, aircraft construction, unmanned aviation, obstacle collision warning systems, cartography and navigation, space geodesy, machine vision systems, construction, mining, underwater vision systems, in the study of the atmosphere, mine clearance and rescue of people at sea and on land. Essence: the compact lidar additionally contains an electro-optical converter containing a cubic beam splitter and a modulator, and the cubic beam splitter is perpendicular to the first optical axis with the first face, and the second face parallel to the first face is facing the modulator, and the laser emitter, cubic beam splitter and modulator are located on the first optical axis, and the beam splitting line of the cubic beam splitter is located at 45 degrees to the first optical axis, and the laser emitter, electro-optical converter are located on the first optical axis, in this case, the output optical system and the cubic beam splitter are located on the second optical axis perpendicular to the first optical axis, and the second optical axis passes through the center of the third face of the cubic beam splitter facing the output optical system, and the driver is electrically connected to the laser emitter, the control unit is electrically connected to an electro-optical converter, a digital computer and a synchronization unit, and the laser emitter contains a pulsed laser source and a collimator located on the first optical axis, perpendicular to the first face of the cubic beam splitter, and the modulator contains a transparent dielectric substrate, one of the sides of which is perpendicular to the first optical axis, and its other side is in series optically in contact with a transparent electrically conductive layer, with a gel-like layer, with a gap and with a three-layer structure, and the surface of the electrode system facing the gap is covered with a dielectric mirror, and the electrode system is electrically in contact with the control unit, while the electrode system contains a conductive matrix grid of dielectric cells. The output optical system contains adaptive optics optically directed at the object of observation, while the receiving optical-electronic path is optically directed at the object of observation and contains a lens, a band-pass optical filter, a photodetector element, a matching electronic path, a recording electronic circuit, and the lens, a band-pass optical filter and a photodetector element are located on the same optical axis, and the photodetector element is electrically connected to the matching electronic path, while the matching electronic path is electrically connected to the recording electronic circuit, while the recording electronic circuit is electrically connected to the digital computer, while the digital computer is electrically connected to the driver and the synchronization unit.

EFFECT: invention provides an extension of the scope of application, reducing the dimensions of the lidar.

1 cl, 12 dwg