Abstract An electron gun assembly of the three gun, in-line type. The three guns each including a plurality of electrode elements are rigidly attached to four support rods or glass beads by a mounting means comprising four metal straps which connect each of the outer gun elements to two support rods and the center gun elements to all four support rods. A first group of four L-shaped metal tabs are imbedded in the ends of the support rods, and two mounting bars are each connected at both ends to two of the tabs for the purpose of making electrical connections to the gun heater elements. A second group of U-shaped metal tabs are also imbedded in the ends of the support rods to permit a mechanical connection of a stem component whereby the gun electrode elements are isolated from forces applied to the stem. A convergence assembly is self-registering with respect to the gun assembly by the alignment of precision holes in the base of the convergence assembly with cutouts provided in a flange on the center gun electrode. A plurality of slots are provided in the wall of the convergence assembly which permit self-registering of pole piece elements positioned inside the assembly.
In an electron gun assembly including a plurality of electron gun means arrayed in a common plane, the gun means including a plurality of terminal accelerating electrodes having openings therein for allowing the passage of electron beams therethrough: convergence means having a plurality of first apertures formed therein for registering with ones of the openings in the electrodes, said convergence means further having second, smaller apertures formed on either side of an inner one of said first apertures; and flange means extending laterally from that electrode associated with said inner one of said first apertures, said flange having cutouts in the periphery thereof, said cutouts being shaped to register with and conform to at least a part of said second, smaller apertures when the openings of the electrodes are properly registered with said first apertures.
Claim 2
Dependent Claim
135 words
In an electron gun assembly including a plurality of electron gun means arrayed in a common plane, the gun means including a plurality of terminal accelerating electrodes having openings therein for allowing the passage of electron beams therethrough: convergence means having a plurality of first apertures formed therein for registering with ones of the openings in the electrodes, said convergence means further having second, smaller apertures formed on either side of an inner one of said first apertures; and flange means extending laterally from that electrode associated with said inner one of said first apertures, said flange having cutouts in the periphery thereof, said cutouts being shaped to register with and conform to at least a part of said second, smaller apertures when the openings of the electrodes are properly registered with said first apertures.
Claim 3
Dependent Claim
43 words
The invention as defined in claim 1 wherein three gun means and three terminal accelerating electrodes are provided, said flange means being on the center one of said three electrodes abutting the surface of the convergence means in which said apertures are formed.
Claim 4
Dependent Claim
29 words
The invention as defined in claim 1 wherein said cutouts each have a further cutout portion extending inwardly of said flange means for relieving mechanical stresses in said flange.