EP 0224786 B1 19900228 - X-RAY EMITTER
Title (en)
X-RAY EMITTER
Publication
Application
Priority
DE 3542127 A 19851128
Abstract (en)
[origin: US4819260A] An x-radiator has a rotating anode on which electrons emitted by a thermionic cathode are incident to produce an x-ray beam. The electron stream is incident on the anode at a focal spot. The focal spot on the anode is prevented from migrating laterally from a selected point by a magnetic field generated by a coil acting on the electron stream. The position of the emitted x-ray beam is monitored by a detector, and upon a change in position of the x-ray beam, corresponding to a migration of the focal spot, the detector supplies a signal to a control unit for the coil which adjusts the magnetic field to maintain the electron stream at the desired focal spot.
IPC 1-7
IPC 8 full level
H01J 35/10 (2006.01); H01J 35/14 (2006.01); H01J 35/30 (2006.01); H05G 1/26 (2006.01); H05G 1/52 (2006.01)
CPC (source: EP US)
H01J 35/153 (2019.04 - EP US); H01J 35/305 (2013.01 - EP US); H05G 1/26 (2013.01 - EP US); H05G 1/52 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR LI
DOCDB simple family (publication)
EP 0224786 A1 19870610; EP 0224786 B1 19900228; DE 3542127 A1 19870604; DE 3669233 D1 19900405; JP H0334828 Y2 19910724; JP S6292554 U 19870613; US 4819260 A 19890404
DOCDB simple family (application)
EP 86115942 A 19861117; DE 3542127 A 19851128; DE 3669233 T 19861117; JP 18038786 U 19861121; US 23137088 A 19880812