Improved electron gun for the beam-indexing color-television display

Improved gun design has considerably increased the brightness of the 110°-25 in beam-indexing color display (triplet pitch ≈ 1.2 mm). Without dynamic correction for deflection errors the color reproduction in normal picture material is now satisfactory up to peak currents of about 2.5 mA (against 1.5 mA for the old gun).