Two-stage image intensifier

Details Two-stage image intensifier Two-stage image intensifier

H - Electricity

01

J

313/73

H01J 40/00 (2006.01) H01J 29/38 (2006.01) H01J 29/92 (2006.01) H01J 31/50 (2006.01)

Patent

CA 1122641

ABSTRACT A panel shaped, proximity type, multi-stage x-ray image intensifier tube for medical x-ray diagnostic use having all linear components and yet a high brightness gain, the tube being comprised of a rugged metallic tube envelope, all inwardly concave, metallic input window, a full size output display screen, a planar, activated alkali-halide scintillator photocathode screen, a fiberoptic plate between the scintillator- photocathode screen and the output display screen, the plate having an intermediate display screen on one flat side facing the scintillator-photocathode screen and a second photocathode on the otherside, which faces the output display screen, an- with the scintillator-photocathode screen and the fiberoptic plate being suspended on insulators within the envelope and in between the input window and the output screen. Separate, high, negative electrostatic potentials are applied between the scintillator-photocathode screen and the intermediate display screen and between the second photocathode and the output display screen. The tube can be used in a direct view, photo- fluorographic mode, in a radiographich camera system and with a remote view T.V. system.

323050

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