METHOD FOR INCREASING STABILITY OF A FORMED IMAGE IN NIGHT VISION DEVICES AND A DEVICE FOR REALIZING SAID Russian patent published in 2020 - IPC H01J31/50 H01J29/46 

FIELD: instrument engineering.

SUBSTANCE: invention relates to night vision equipment, and more specifically to a method of increasing image formation stability with a night vision device (NVD), an electronic optical converter (EOC) with a power circuit, EOC power supply circuit, as well as to NVD device, EOC with power supply circuit, EOC power supply circuits implementing proposed method. Disclosed is a method for increasing stability of a formed image in night vision devices, which is intended to optimize supply of pulse voltages to a microchannel plate (MCP) and a photocathode. Supply of pulse voltage only to the photocathode does not require generation of a control signal which is required when pulse voltages are supplied to the MCP. Pulse control signal, which is used to generate pulse voltage on MCP, in each operating cycle must be free from interference. If the control pulse signal is unstable, then the pulse voltage on the MCP in each operating cycle will be unstable, which leads to instability of the image observed by the operator. In pulse power supply sources frequency of full cycle is in range from 30 to 200 Hz, and frequency of converter is in range of 16,000÷25,000 Hz, therefore capacity used to generate control signal, will be charged more than 100 times during one operating cycle, Ie capacity will be charged not monotonously but with small jumps, which leads to instability of trailing edge of control pulse and to instability of image observed by operator. Disclosed is generation of control signal which is free from noise by any known method, analogue, analogue-digital, digital or any combination thereof, which ensures stability of formed image.

EFFECT: in compliance with this method, night vision devices are proposed.

6 cl, 2 dwg