CPC Subgroup
H01J 31/28 with electron ray scanning the image screen
Full Title
Cathode ray tubes; Electron beam tubes (H01J25/00, H01J33/00, H01J35/00, H01J37/00 take precedence; details of cathode ray tubes or of electron beam tubes H01J29/00) > 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 (tubes without defined electron beams and having a light ray scanning photo-emissive screen H01J40/20) > with electron ray scanning the image screen
5 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H01J 31/30 having regulation of screen potential at anode potential, e.g. iconoscope
- H01J 31/34 having regulation of screen potential at cathode potential, e.g. orthicon
- H01J 31/40 having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode, i.e. having "triode action"