Title: Rectangular beam laminar flow electron gun

Abstract: A laminar flow electron gun employing a narrow, elongated cathode for forming a rectangular beam and a plurality of electrodes having narrow, elongated apertures cooperating with said cathode to draw electrons from said cathode and operate on the electrons to focus the rectangular beam onto a target by providing a parallel flow region adjacent said cathode, followed by a divergent flow region, in turn, followed by a convergent flow or focusing region.

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Inventors: Bates, David J. (Los Altos, CA, US)
Silzars, Aris (Portland, OR, US)
Roberts, Lester A. (Palo Alto, CA, US)

Application Number: 535098
Filing Date: 1974-12-20
Publication_date: 1976-09-14
Assignee: Watkins-Johnson Company (Palo Alto, CA)
Primary Class(es): 313/453 315/15
Other Classes:
US Patent Ref:

2817033	Dec, 1957	Brewer	313/453.
2866126	Dec, 1958	Skellett	313/453.
2999182	Sep, 1961	Field	313/453.
3202864	Aug, 1965	Crowell	313/410.
3740607	Jun, 1973	Silzars et al.	313/453.
3881136	Apr, 1975	Scheele	313/453.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Blum, T. M.
Attorney: