Arrangements for focusing or reflecting ray or beam

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group > Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement > Arrangements for focusing or reflecting ray or beam

CPC:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00 > Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement > Arrangements for focusing or reflecting ray or beam

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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H01J 29/585 CPC only CPC only
H01J 29/60 Mirrors IPC+CPC Available in IPC and CPC
H01J 29/62 Electrostatic lenses +2 CPC IPC+CPC Available in IPC and CPC
H01J 29/64 Magnetic lenses IPC+CPC Available in IPC and CPC