Patent ID: 9202661
Filing Date: 2015-12-01
Classification: G21K,H01J,Y10T

Abstract:
1. An electron beam device having a tubular body of elongate shape with an electron exit window extending in the longitudinal direction of the tubular body, said tubular body at least partly forming a vacuum chamber, said vacuum chamber comprising therein a cathode comprising a cathode housing having an elongate shape, and at least one electron generating filament and a control grid both extending along the elongate shape of the cathode housing wherein the control grid and the cathode housing are attached to each other wherein longitudinal end portions of either the control grid or the cathode housing are bent in a direction towards each other to form bulge-like shapes for the formation of electron beam shaping electrodes, and wherein free edges of the longitudinal end portions of either the control grid or the cathode housing face an outside surface of the control grid.