Abstract: A color cathode ray tube of the in-line type has a pre-focusing lens part and a main lens part. The prefocusing lens part comprises a first (G1) and a second (G2) electrode, each having apertures for passing electron beams. The apertures in the second electrode comprise a first (G2A) and a second (G2B) aperture, each being substantially stigmatic. The diameters of the apertures are different and 1.5.ltoreq..O slashed.G2B/.O slashed.G2A.ltoreq.5.

Abstract: In a cathode-ray tube having a glass envelope portion, a gettering device (18) is urged against an internal wall portion of the glass envelope portion (2) by means of a resilient metal strip (19) connected to a component of the tube. The gettering device comprises a getter holder (30) in the form of an annular metal channel which is connected to the resilient metal strip (19) via a metal connection strip (32) and furthermore is kept, spaced from the wall portion by a metal support member (33). The support member is formed by a metal supporting arm (33) extending from the metal connection strip (32) which at its free end (34) is curved convexly with respect to the wall portion and contacts the wall portion in an area (35) situated centrally with respect to the annular channel (30). This arrangement enables the temperature of the support member at the area where it contacts the wall portion to be kept below 700.degree. C.