H - Electricity – 01 – J
Patent
H - Electricity
01
J
95/44
H01J 31/28 (2006.01) H01J 31/50 (2006.01) H05H 1/00 (2006.01)
Patent
CA 1110896
Abstract of the Disclosure Proximity focused streak tube having a photocathode for converting photon images from a source into photoelec- trons. A phosphorous screen is provided for receiving the photoelectrons. The photocathode and the screen define a longitudinal tube axis. A channel plate is provided having a plurality of substantially parallel bores that are disposed in close proximity to the photocathode so that the bores in the channel plate are inclined at an angle with respect to the longitudinal tube axis. A voltage source supplies a voltage difference between the photocathode and the channel plate to cause electrons to be extracted from the photocathode and to be accelerated through the bores in the channel plate. The bores in the channel plate are inclined at an angle in such a manner so that there cannot be a direct feedthrough of x-rays to the phosphorous screen and also preventing a direct feedthrough of visible light. First and second spaced apart beam electrodes are disposed between the channel plate and the phosphorus screen. A voltage are asymmetric of the tube axis to compensate for the inclination of the channel plate with respect to the tube axis.
311467
Lieber Albert J.
Sutphin Howard D.
General Engineering & Applied Research Inc.
Smart & Biggar
LandOfFree
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