Shadow casting electron-beam system

Details Shadow casting electron-beam system Shadow casting electron-beam system

1980-04-07

1982-05-25

Anderson, Bruce C.

Radiant energy

With charged particle beam deflection or focussing

With target means

2504922, G01K 108, H01J 3700

Patent

active

043318754

ABSTRACT:
Disclosed is an electron-beam system comprised of an iris having an aperture of predetermined shape; a cathode for emitting electrons from an area which is substantially smaller than the aperture; a lens system for directing the emitted electrons along a path through the aperture to form a magnified image of the aperture; and a target for the electrons which is placed along the path of the aperture's demagnified shadow.

REFERENCES:
patent: 4140913 (1979-02-01), Anger et al.
patent: 4198569 (1980-04-01), Takayama

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