PYROVIDICON FUNCTIONING METHOD Russian patent published in 2008 - IPC H04N5/33 

FIELD: heat vision, in particular, application of pyrovidicons, possible use in devices for observing space.

SUBSTANCE: in accordance to the method, by means of deflection system, scanning pattern is formed, which covers the target of pyrovidicon. Raw scanning of each frame is performed by performing two alternating operations. During first operation, raw-wise reading of heat image signal from the target is performed during direct and reverse movement of beam of identical duration across the whole scanning pattern. During second operation, across whole scanning pattern, raw-wise generation of pedestal charge is performed during direct or reverse movement of beam of identical duration, where electronic beam is defocused and its current is increased up to level, which ensures compensation of charge on current row and adjacent rows, introduced by the beam during reading.

EFFECT: increased image quality, which is achieved due to increased signal to noise ratio and resolution capacity in terms of temperature.