GB1232154A - - Google Patents
Info
- Publication number
- GB1232154A GB1232154A GB1232154DA GB1232154A GB 1232154 A GB1232154 A GB 1232154A GB 1232154D A GB1232154D A GB 1232154DA GB 1232154 A GB1232154 A GB 1232154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaping
- mesh
- lens
- plate
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J31/00—Cathode ray tubes; Electron beam tubes
- H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
- H01J31/10—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes
- H01J31/12—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen
- H01J31/16—Image or pattern display tubes, i.e. having electrical input and optical output; Flying-spot tubes for scanning purposes with luminescent screen with mask carrying a number of selectively displayable signs, e.g. charactron, numeroscope
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Electron Beam Exposure (AREA)
Abstract
1,232,154. Cathode-ray tubes. STROMBERG DATAGRAPHIX Inc. 4 Aug., 1969 [19 Aug., 1968], No. 38863/69. Heading H1D. A shaped-beam cathode-ray tube comprises a beam-shaping plate 13, a beam-trimming plate 16 and a mesh 18 adjacent the trimming plate for dividing the beam and producing uniform intensity over the beam-trimming aperture 17. The beam passes through an Einzel lens consisting of annular electrodes 24, 27 maintained at the same positive potential and separated by a tube 26 maintained at earth potential. The potentials applied to the lens and to focusing electrode 23 determine the cross-section of the beam at the mesh 18 and trimming plate 17, both of which are within the tube 26. By means of deflection electrodes 29, 31 the beam is directed through one of a number of shaped apertures 14 in the shaping plate 13 and thence directed by a further lens 32, 52, 62, deflection electrodes 33, 34 and deflection yoke 36 on to a screen 12. The lens 32, 52, 62 is adjusted to image one of the shaping apertures 14 on the screen. The effect of the mesh 18 is to produce uniform intensity of the beam at the operative shaping aperture 14 with a sharp cut-off at the edge of the aperture. The electrodes 23, 24, 27 are adjusted so that the mesh is not imaged in the plane of the shaping apertures 14.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75360168A | 1968-08-19 | 1968-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1232154A true GB1232154A (en) | 1971-05-19 |
Family
ID=25031353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1232154D Expired GB1232154A (en) | 1968-08-19 | 1969-08-04 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3579014A (en) |
| DE (1) | DE1942147A1 (en) |
| FR (1) | FR2015886A1 (en) |
| GB (1) | GB1232154A (en) |
| NL (1) | NL6912535A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2076589B (en) * | 1980-05-19 | 1985-03-06 | Hughes Aircraft Co | Electron-beam shaping apparatus |
| US20020089277A1 (en) * | 2001-01-11 | 2002-07-11 | Thomas Skupien | Beam forming region having an array of emitting areas |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE513449A (en) * | 1951-08-11 | |||
| US2824250A (en) * | 1955-05-12 | 1958-02-18 | Gen Dynamics Corp | Cathode ray apparatus utilizing convergence means |
| US2877369A (en) * | 1955-06-02 | 1959-03-10 | Rca Corp | Electron beam tube |
| US2939982A (en) * | 1957-10-02 | 1960-06-07 | Gen Dynamics Corp | Cathode ray tube apparatus |
| US3049641A (en) * | 1959-05-08 | 1962-08-14 | Gen Electric | High transconductance cathode ray tube |
| US3143681A (en) * | 1959-12-07 | 1964-08-04 | Gen Electric | Spiral electrostatic electron lens |
| US3151270A (en) * | 1961-03-31 | 1964-09-29 | Bell Telephone Labor Inc | Electron ribbon beam encoder tube with beam tilt control |
| US3143685A (en) * | 1961-07-24 | 1964-08-04 | Multi Tron Lab Inc | Character display cathode ray tube |
| US3354335A (en) * | 1964-11-02 | 1967-11-21 | Stromberg Carlson Corp | Electron gun construction for shapedbeam cathode-ray tubes providing variable beam size |
-
1968
- 1968-08-19 US US753601A patent/US3579014A/en not_active Expired - Lifetime
-
1969
- 1969-08-04 GB GB1232154D patent/GB1232154A/en not_active Expired
- 1969-08-12 FR FR6927665A patent/FR2015886A1/fr not_active Withdrawn
- 1969-08-18 NL NL6912535A patent/NL6912535A/xx unknown
- 1969-08-19 DE DE19691942147 patent/DE1942147A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2015886A1 (en) | 1970-04-30 |
| US3579014A (en) | 1971-05-18 |
| NL6912535A (en) | 1970-02-23 |
| DE1942147A1 (en) | 1970-03-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |