FIELD: electricity.
SUBSTANCE: input window for vacuum photoelectronic proximity devices is designed as a bowl-shaped, composite, comprising cone-shaped lateral part with a step ledge from the side of the smaller diameter, and a flat bottom having a step ledge along the edge connected by means of adjunction of the respective step ledges to each other, and the connection is fixed by indium sealing.
EFFECT: simplification of technology of manufacturing of an input opening, including for photocathodes on the basis of heteroepitaxial structures, providing of considerable coefficient of strengthening of photoelectronic proximity devices at improvement of their electric durability and increase of penetrative voltage.
2 dwg
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