公开(公告)号：US3895253A

公开(公告)日：1975-07-15

申请号：US40872073

申请日：1973-10-23

Applicant: ZENITH RADIO CORP

Inventor： SCHWARTZ JAMES W ,  CHIODI WAYNE R ,  ROWE WILLIAM A ,  WILSON IVA M

IPC: H01J29/48 ,  H01J29/50 ,  H01J29/62

CPC classification number: H01J29/503

Abstract: A color cathode ray tube includes an in-line or delta cluster of electron guns each having an improved electron focus lens. The electron lens provides reduced spherical aberration when compared with prior art electrostatic lenses having similar diameter. The lens establishes an essentially saddle-shaped axial potential distribution V0. A plurality of coaxially and contiguously disposed electrodes have a distribution of potentials applied thereto which is highest on the end electrodes and lowest on an intermediate electrode, decreasing gradually from both end electrodes to said intermediate electrode. The lens provides an axially continuously active, stray-field isolated focusing field.

Abstract translation: 一种彩色阴极射线管包括一个具有改进的电子聚焦透镜的电子枪的直列或三角形簇。 与现有技术的具有相似直径的静电透镜相比，电子透镜提供减小的球面像差。 镜头基本上形成鞍形的轴向电位分布V0。 多个同轴且连续布置的电极具有施加到其上的电位分布，其在端电极上最高并且在中间电极上最低，从两端电极逐渐减小到所述中间电极。 透镜提供轴向连续活动的杂散场隔离聚焦场。