FIELD: electric elements.
SUBSTANCE: invention relates to creation of vacuum photoelectronic devices. In the method of making an input window for electron-optical converters, which includes grinding the inner end of the workpiece of the input window with an abrasive with a grain size of 23-64 mcm at a tool rotation speed of 10-300 rpm and a processing temperature of 18-27 °C. Polishing of the inner end of the inlet window is carried out by fire polishing, for which the polished workpiece of the inlet window is placed into the furnace with its outer end facing downwards, heating and holding above the Littleton temperature until the inner end surface roughness Ra≤0.02 is obtained. Further, the workpiece is annealed to relieve thermal stresses, the outer end of the workpiece is ground and polished.
EFFECT: high sensitivity of the photocathode and longer service life of the EOC.
2 cl, 3 dwg
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