Screens for shielding; Guides for influencing the discharge; Masks interposed in the electron stream

Full Title

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Screens for shielding; Guides for influencing the discharge; Masks interposed in the electron stream