METHOD AND SYSTEM FOR PROTECTION OF OPTICAL COMMUNICATION CHANNEL IN SPACE OPTICAL COMMUNICATION SYSTEMS FROM FLASHING WITH POINT AND EXTENDED LIGHT SOURCES Russian patent published in 2021 - IPC G02B23/00 B64G1/36 

FIELD: optics.

SUBSTANCE: method is comprised of stages wherein an optical laser communication channel is installed, the optical emission is focused by a receiving telescope covered with a highly selective frequency filter with flexible panels of adjustable curvature installed thereon by means of hinge joints controlled by feedback signals from a CCD matrix, the focused emission is divided by a beam splitter into two beams: to the modulator and to the highly sensitive CCD matrix, one pixel of the modulator corresponds with each pixel or group of pixels of the CCD matrix, the signal from the pixels of the CCD matrix is directed to the spatial selection control unit setting the voltage at the pixels of the modulator. If no voltage is applied to the pixels of the modulator, all the radiation reflected from the modulator reaches the detector of the optical communication channel, if the maximum possible voltage is applied to the pixels of the modulator, the radiation therefrom does not reach the detector, if the illumination level at a certain pixel of the CCD matrix exceeds the specified level, a high voltage is applied to the corresponding pixel of the modulator and the radiation therefrom does not reach the detector.

EFFECT: ensured possibility of suppressing flashing without introducing stricter requirements for angular accuracy of the guidance and containment system of the optical communication channel.

10 cl, 3 dwg