Cathode-ray tube with deflection amplification and post-deflection acceleration专利检索-四极管电子零件及设备专利检索查询-专利查询网

Cathode-ray tube with deflection amplification and post-deflection acceleration

阅读：609发布：2021-12-23

专利汇可以提供Cathode-ray tube with deflection amplification and post-deflection acceleration专利检索，专利查询，专利分析的服务。并且In a cathode-ray tube that includes a slotted post-deflection acceleration electrode and, upstream thereof, an adjacent quadrupolar lens for deflection amplification, in order to correct image distortion, there are provided two slotted correcting electrodes disposed at either side of said quadrupolar lens. The correcting electrode situated between the secondary acceleration electrode and the quadrupolar lens is at the same potential as the secondary acceleration electrode, while the correcting electrode upstream of said quadrupolar lens has a slot with a configuration similar, but oriented perpendicularly to that of the slot provided in the post-deflection acceleration electrode.，下面是Cathode-ray tube with deflection amplification and post-deflection acceleration专利的具体信息内容。

权利要求

1. In a cathode-ray tube of the known type that includes (a) an evacuated envelope, (b) an electron gun at one end of the envelope for emitting an electron beam, (c) a fluorescent screen at the other end of the envelope to be excited by the electrons of said beam, (d) a horizontal deflection system in the path of said electron beam, (e) a quadrupolar lens disposed in said path after said horizontal deflection system for amplifying the horizontal deflection of said electron beam, (f) a vertical deflection system in said path, (g) a quadrupolar lens disposed in said path after said vertical deflection system for amplifying the vertical deflection of said electron beam, one of said quadrupolar lenses being closer to said screen than the other, (h) a conductive coating forming part of a post-deflection acceleration system and lining the internal wall of said envelope from said screen to the quadrupolar lens closer to said screen and (i) a spherical cup-shaped post-deflection acceleration electrode forming part of said post-deflection acceleration system and at least partially surrounding the quadrupolar lens closer to said screen, said spherical cup-shaped electrode being provided with a slot, the configuration of which has an elongated outline formed of two opposite, arcuate, inwardly concave short sides and two opposite arcuate, inwardly convex long sides, and through which said electron beam passes subsequent to passing through the last-named quadrupolar lens, the improvement comprising A. a first planar disc-shaped electrode disposed in said path immediately before the quadrupolar lens closer to said screen and being provided with a slot having substantially the same configuration as that of the slot provided in said postdeflection acceleration electrode, the median plane of said slot in said post-deflection acceleration electrode and the median plane of said slot in said first planar disc-shaped electrode being at right angles with respect to one another and B. a second planar disc-shaped electrode disposed in said path between the last-named quadrupolar lens and the slot of said post-deflection acceleration electrode, said second planar disc-shaped electrode having an opening for the passage of said electron beam, said opening being symmetrical with respect to the directions of the vertical and horizontal scanning.

2. An improvement as defined in claim 1, wherein adjacent sides of said slot meet substantially in right angles.

3. An improvement as defined in claim 1, wherein the slot provided in said first planar disc-shaped electrode has arcuately rounded corners.

4. An improvement as defined in claim 1, wherein the opening provided in said second planar disc-shaped electrode has a circular configuration.

5. An improvement as defined in claim 1, wherein the opening provided in said second planar disc-shaped electrode has a configuration of a distorted rectangle having arcuate, inwardly concave sides and corners.

6. An improvement as defined in claim 1, including means for applying the same potential to said post-deflection acceleration electrode and to said second planar disc-shaped electrode and means for applying a potential to said first planar disc-shaped electrode other than that applied to said second planar disc-shaped electrode.

说明书全文

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Cathode-ray tube with deflection amplification and post-deflection acceleration

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