METHOD OF FORMING LASER RASTER Russian patent published in 2014 - IPC G02B26/10 G01S17/00 G02F1/33 

FIELD: physics, optics.

SUBSTANCE: invention relates to instrument-making and is intended for forming laser raster of control systems, laser aiming devices and can be used in controlling, landing and docking aircraft, guiding ships through complex shipping channels, detecting optoelectronic devices from "flare" and remote control of robotic devices. The method of forming laser raster is based on successive diffraction of a laser beam at two acoustooptical deflectors mounted in series and turned by 90 degrees relative to each other, where high-frequency control signals f₁(t) and f₂(t) are transmitted to the control inputs of said deflectors and where the laws of variation of said signals are given in the form of linear variation of control frequencies, and the number N of rows or (and) columns is selected as an integer value based on the condition N=k·T_c/τ, where k=1.0-2.5, T_c is the row formation time, τ is the time constant of the deflector, calculated as τ=d₀/ν, d₀ is the light aperture of the deflectors, ν is the acoustic wave speed.

EFFECT: high uniformity of laser raster intensity, high information value of the laser system and enabling the turning of laser raster about its centre.

6 dwg