Electron collimator
AssigneeU. S. Philips Corporation
InventorsGeoffrey Maximilian Lawrence Claridge, Brian Sydney Driver, Timothy Robert Jarvis
Life of this patent
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Abstract
An electron collimator is formed by two pairs of multi-leaved corner plates which are capable of simultaneous movement to alter the dimension of the collimator in two dimensions. In a preferred embodiment each corner shaped plate has two leaves which interleave with the leaves of an adjoining corner plate.
Claims5
An electron beam collimating device, comprising an open ended structure having a substantially rectangular shape, said structure comprising four wall portions of which at least parts are substantially electron impermeable, said wall portions being interlaced with and movable relative to each other and defining a passageway for said beam, each of said wall portions comprising first and second wall structures angularly disposed with respect to each other.
Dependencies are inferred from the claim text.