Importance

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Abstract

The IIT of the present invention consists of the following parts arranged in series along the optical axis of the IIT in the direction from the target being observed to the viewer's eye: a fiber-glass plate having a flat side facing the object and a concave side facing the viewer, a thin-film coating applied onto the concave surface of the fiber-glass plate which functions as a photo-cathode, an anode made in the form of a truncated cone with the narrow side facing the photo-cathode, and a flat luminescent screen made of glass with a luminescent coating. Unique parts of the IIT of the invention are a specially profiled and dimensioned anode and shutter electrode. The anode and the shutter electrode have specific relationships between the diameters and lengths of the portions from which this parts are composed. The aforementioned specific relationships between the dimensions and shapes make it possible for the IIT to achieve the maximal resolution capacity and the coefficient of shuttering in pulse mode of operation along with the minimal electrical capacitance of the shutter electrode and with the minimal shutter electrode voltage. The characteristics achieved in the IIT of the present invention are unattainable with the use of known IITs of similar type or generation.

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First Claim