POST ACCELERATION TYPE CATHODE RAY TUBE WITH PERFORATED HOLLOW COLLECTOR ELECTRODE ADJACENT SHADOW MASK

摘要

In a post acceleration type cathode ray tube of the class comprising a panel, a fluorescent screen coated on the inner surface of the panel, a funnel, an auxiliary electrode formed on the inner surface of the funnel, an electrode maintained at an intermediate potential and positioned to face the fluorescent screen for transmitting an electron beam, and a secondary electron collector electrode disposed close to the auxiliary electrode, the secondary electron collector electrode is constructed to transmit the secondary electrons generated by the other electrodes of the tube.