DIFFRACTION LIDAR Russian patent published in 2019 - IPC G01S17/02 G01S7/481 

FIELD: optics; instrument engineering.

SUBSTANCE: invention relates to the field of optical instrument engineering and relates to the diffraction lidar. Lidar includes laser emitter, control unit, transmission optical path, opto-electronic receiving path, digital calculator and information consumer. Transmission optical path includes horizontal modulator, a horizontal phase filter and adaptive optics. Horizontal modulator comprises transparent electrically conductive layer applied on the first dielectric transparent substrate, covered with transparent gel-like layer, and the linear transparent horizontal electrodes system arranged on the second dielectric transparent substrate in the same plane. Electrodes are with the clearance placed above the gel-like layer and are electrically connected to the control unit via the signals sources. Phase filter contains opening, which aperture is at least equal to the predetermined range of the laser radiation diffraction after the horizontal modulator plus the first orders. Receiving opto-electronic path includes lens, band-pass optical filter and photodetector.

EFFECT: technical result consists in increasing the laser radiation using efficiency and increasing the lidar speed.

5 cl, 12 dwg