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

Child Classifications

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• H01J 31/121
• H01J 31/122
• H01J 31/123
• H01J 31/128
• H01J 31/14 Magic-eye or analogous tuning indicators
• H01J 31/15 with ray or beam selectively directed to luminescent anode segments
• H01J 31/16 with mask carrying a number of selectively displayable signs, e.g. charactron, numeroscope
• H01J 31/18 with image written by a ray or beam on a grid-like charge-accumulating screen, and with a ray or beam passing through and influenced by this screen before striking the luminescent screen, e.g. direct-view storage tube