Brightness intensifier tube comprising seals.

摘要

A brightness intensifier tube (1) is composed of a cylindrical sleeve portion (2) comprising supporting faces acting as reference surfaces for an entrance window and an exit (10) screen (16) so that a vacuumtight tube with exactly positioned parts can be formed by way of seals provided by application of a single compressive load. Because electrodes of an electron optical imaging system (22) are supported by the windows or the sleeve portion (2) in an exactly positioned fashion, assembly produces exact positioning of the electrode system in the tube. <IMAGE>