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CPC Subgroup
H01J 3/12

Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses (H01J3/02, H01J3/04 take precedence)

Full Title

Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps > Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses (H01J3/02, H01J3/04 take precedence)