METHOD AND DEVICE WITH ADVANCED CORRECTION IN AN OPTICAL SYSTEM WITH CLOSED-LOOP FEEDBACK Russian patent published in 2022 - IPC G02B26/08 H04N5/351 

FIELD: optical equipment.

SUBSTANCE: invention can be used to correct the angles of inclination of the wavefront in adaptive optical systems used in astronomy, vision systems in a turbulent atmosphere, when controlling a laser beam in scanning systems. A method is described with advanced correction in an optical system with closed feedback containing a video camera, a control unit for X, Y coordinates and a deflector mirror, in which the position of the received image passed through a turbulent atmosphere is recorded in uniform cycles of N frames of the current cycle, the image displacement trajectory is calculated, determined by the change in the angles of inclination of the wavefront, and the expected displacement of the image position is set on the first frame of the next cycle, the calculated signal is sent to the deflector, which sets the angle of rotation of the correction mirror so that at the moment of the next first frame of the next cycle, the position of the image coincides with the position of the image on the matrix of the video camera in all the first information frames of the previous cycles.

EFFECT: increase in accuracy and elimination of the delay time of the correction signal relative to the current state of the atmosphere.

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