Document Type and Number:
Japanese Patent JPS4864870
Kind Code:
A
Abstract:
An image intensifier tube comprising a phosphor screen and a photocathode is provided with a wire mesh adjacent the phosphor screen. This provides an equipotential surface and allows the main part of the focusing of electrons from the photocathode to be carried out in a relatively weak electric field. This leads to a reduction in the length of the tube.
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Application Number:
JP11722872A
Publication Date:
September 07, 1973
Filing Date:
November 24, 1972
Export Citation:
International Classes:
H01J31/50; (IPC1-7): H01J31/50