ACOUSTOOPTICAL RECEIVER-FREQUENCY METER Russian patent published in 2000 - IPC

FIELD: radio measuring equipment, applicable as a radio-frequency meter of radio signal parameters. SUBSTANCE: acoustooptical frequency meter, containing successively arranged in light a laser, collimator, acoustooptical deflector, the first integrating lens with focal distance F₂, rule of photodiodes with their arrangement period p and length of each photodiode l, additionally uses a laser radiation forming unit with a rectangular distribution of intensity of extent d and the second integrating lens with focal distance F₁, which is located at distance F₁ both from the laser radiation forming unit and from the acoustooptical deflector, connected between the collimator and acoustooptical deflector; the geometrical parameters of the receiver-frequency meter: F₁, F₂, d, l and p are interrelated by relation: . EFFECT: enhanced resolution in frequency. 4 dwg