ADAPTIVE OPTIC SYSTEM FOR FOCUSING COHERENT RADIATION ONTO ELONGATED OBJECT Russian patent published in 1994 - IPC

FIELD: quantum radio engineering. SUBSTANCE: adaptation process is performed with account of as power and information characteristics of reflected field, as well as with using of the first three harmonics of modulating frequencies when forming signals in wavefront corrector 2. Array intensity photodetector 7 is introduced for the purpose, which has K sensitive elements, as well as K log amplifiers 9 and K-input adder 10. Each unit 8 has additionally sync detectors 12 and 13, low frequency amplifiers 16 and 17, by-two frequency multipliers 18 and by-three frequency multiplier 19. Adder 20 has four inputs. EFFECT: maximal level of signal at the plane of elongated object. 5 dwg