公开(公告)号：EP0754348B1

公开(公告)日：2004-01-14

申请号：EP95936717.8

申请日：1995-11-27

申请人： Koninklijke Philips Electronics N.V.

发明人： ADRIAANSE, Jan, Peter ,  BOHLANDER, Johannes, Hendricus ,  VAN DER POEL, Willibrordus, Adrianus, Johannes,

IPC分类号： H01J29/56 ,  H01J29/50

CPC分类号： H01J29/503 ,  H01J2229/4858 ,  H01J2229/4862 ,  H01J2229/4868 ,  H01J2229/4879 ,  H01J2229/4886 ,  H01J2229/4896

摘要： A colour display tube comprises an in-line electron gun for generating three co-planar electron beams having a mean lens comprising a first and second lens electrode for producing a focusing lens field for focusing the electron beams. At least one of said lens electrodes has a correction element for tuning the astigmatism of the lens field. The correction element comprises three co-linear apertures for passing the electron beams, the outer apertures of which are funnel-shaped, the wide end of the funnel-shape being directed away from the centre aperture.

公开(公告)号：EP0719445B1

公开(公告)日：1998-11-11

申请号：EP95915979.9

申请日：1995-05-05

申请人： Koninklijke Philips Electronics N.V.

发明人： STIL, Lambert, Johannes ,  BOHLANDER, Johannes, Hendricus ,  SPANJER, Tjerk, Gerrit ,  LOS, Abraham, Adrianus ,  PENNINGS, Antonius, Jacob

IPC分类号： H01J29/00

CPC分类号： H01J29/503 ,  H01J29/51 ,  H01J2229/4872 ,  H01J2229/4875 ,  H01J2229/4879

摘要： A colour cathode ray tube comprising an in-line electron gun having a main lens with recessed apertures. The main lens is formed by two electrodes. These electrodes have outer edges and recessed apertures which allow passage of three in-line electron beams and which are arranged at a distance d1 and d2, respectively, from said outer edges. The outermost apertures are asymmetric. The difference d1-d2 and the asymmetry of the outermost apertures is such that both the beam displacement and the core haze asymmetry are minimal.

公开(公告)号：EP0755569B1

公开(公告)日：1999-07-21

申请号：EP96900158.5

申请日：1996-01-22

申请人： Koninklijke Philips Electronics N.V.

发明人： SPANJER, Tjerk, Gerrit ,  STIL, Lambert, Johannes ,  BOHLANDER, Johannes, Hendricus ,  LOS, Abraham, Adrianus

IPC分类号： H01J29/56 ,  H01J29/50

CPC分类号： H01J29/503 ,  H01J2229/4868 ,  H01J2229/4872 ,  H01J2229/4875

摘要： An in-line electron gun comprises main lens electrodes. Said main lens electrodes have a common aperture and, at a distance from the common aperture, three in-line apertures in a plate-shaped part. The outer apertures extend, viewed in a direction transverse to the plate-shaped part, beyond the common aperture.