Method and device for operating and focusing tomographic...

Details Method and device for operating and focusing tomographic... Method and device for operating and focusing tomographic...

H - Electricity

01

J

358/11.1

H01J 35/14 (2006.01) H01J 35/24 (2006.01) H01J 35/26 (2006.01)

Patent

CA 1223091

ABSTRACT OF DISCLOSURE A method and a device for operating and focusing a tomo- graphic x-ray unit using an electron beam and embodying at least one electron gun, an anode at which the gun is aimed as well as the x-ray detectors needed to produce a tomographic images of fast-moving objects. It is par- ticularly characteristic of this invention that an electron beam emitted by an electron gun is roughly deflected at a hole in the focusing plate which, by means of focusing field lines, draws the electrons into the hole, focuses and accelerates the electron beam which strikes the surface of the anode, generating an x-ray source, and that the focusing hole is moved in regard to the anode to generate a series of x-ray sources needed to produce a "layerwise" tomographic image of the object under examination.

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