U.S. Philips Corporation

Laurens H Jonk

Johannes K Colditz

Henricus M De Vrieze

Willem H Diemer

August L Simons

Engelbertus Rongen

Johannes W Scheuermann

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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Heerlen, Netherlands

Laurens H Jonk