Method of and apparatus for controlling amount of electron beam

Method of determining a display parameter in a picture display t

Method of determining the position of an electron beam in a shad

Non-destructive read-out device

Non-sequential raster scanning apparatus and method

Oblique streak tube

Optical pulse demodulator

Photomultiplier tube having reduced tube length

Pick-up tube having bias lighting and controls therefor

Production of correction signals in a color CRT system

Radar viewing device

Scanning area rotation device for an image pickup tube

Storage tube moving target detector

System for the display of luminous data with improved readabilit

Television display alignment system and method

Temperature compensation circuit for image intensifiers