ELECTRO-OPTICAL CONVERTER Russian patent published in 2008 - IPC H01J31/50 

FIELD: physics, optics.

SUBSTANCE: invention relates to the electronic equipment, in particular, to electro-optical image converters intended for spectral conversion, scaling, amplification, and temporal analysis of optical signals. The technical effect is achieved by the following: the distinguishing feature of the converter containing a flat photocathode, a focusing electrode, an anode, an electronic beam sweeping system, and a luminescent screen placed into a vacuum enclosure and located along the optical axis, is that a correction electrode in the form of a diaphragm with axially symmetric round opening is inserted into the space between the photocathode and the focusing electrode; the geometrical dimensions of the converter components are selected so as to meet the following ratios: 0.1≤l₁/l₂≤0.25; 1.25≤d₁/d_k≤1.83; 8≤(d₁-d_k)/l₁≤13; 5.4≤L/d_k≤6.8; 0.4≤D/L≤0.6 where: d_k is the operating diameter of the cathode, d₁ is the diameter of the correction electrode diaphragm opening, h is the distance between the photocathode and the diaphragm, l₂ is the distance between the diaphragm and the anode, L is the distance from the photocathode to the screen, D is the focusing electrode diameter.

EFFECT: decrease in image distortion and dimensions of electro-optical image converter.

2 cl, 3 dwg, 3 tbl