H01J31/30 - CPC Classification

Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored; Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope

• H01J31/32 » Tubes with image amplification section, e.g. image-iconoscope, supericonoscope 0