Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

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 or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes

CPC:

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 or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

Child Classifications

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H01J 31/12 with luminescent screen +4 CPC IPC+CPC Available in IPC and CPC
H01J 31/20 for displaying images or patterns in two or more colours +2 CPC IPC+CPC Available in IPC and CPC
H01J 31/22 for stereoscopic displays IPC+CPC Available in IPC and CPC
H01J 31/24 with screen acting as light valve by shutter operation, e.g. eidophor IPC+CPC Available in IPC and CPC