Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1992-10-13
1994-07-12
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
313524, H01V 4014
Patent
active
053291166
ABSTRACT:
An exit section of an X-ray image intensifier tube, including an the exit phosphor screen, exit window and basic optical system, is optimized so as to achieve a high light yield, low optical aberration and a high resolution. The exit window notably has a pre-compensation geometry for curvature of the image plane of the basic optical system, or the exit window an interference filter, or the exit phosphor layer contains a layer of a comparatively slow phosphor in addition to a layer of a customary phosphor in order to achieve noise-suppressing image integration.
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Colditz Johannes K. E.
De Vrieze Henricus M.
Diemer Willem H.
Jonk Laurens H. J.
Rongen Engelbertus
Nelms David C.
Slobod Jack D.
U.S. Philips Corporation
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