GB997575A - Improvements in cathode ray tubes - Google Patents
Improvements in cathode ray tubesInfo
- Publication number
- GB997575A GB997575A GB3672962A GB3672962A GB997575A GB 997575 A GB997575 A GB 997575A GB 3672962 A GB3672962 A GB 3672962A GB 3672962 A GB3672962 A GB 3672962A GB 997575 A GB997575 A GB 997575A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polepieces
- stage
- sept
- electromagnet
- envelope
- 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
- H01J31/123—Flat display tubes
- H01J31/124—Flat display tubes using electron beam scanning
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Electron Sources, Ion Sources (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
997,575. Cathode-ray tubes. GENERAL ELECTRIC CO. Sept. 27, 1962 [Sept. 29, 1961], No. 36729/62. Heading H1D. In a flat cathode-ray tube the horizontal scanning system includes a first dynamic deflection stage 56, Fig. 9, which as shown, is an electromagnet with yoke 57, polepieces 59 and an energization coil 61, but which may comprise electrostatic deflection plates, and a second static deflection stage comprising a pair of polepieces 83 disposed on either side of the envelope and so shaped that the point of minimum beam cross-section 251 remains on a substantially horizontal line 252. The spacing between the polepieces 83 may vary along their lengths. The second stage magnet may be a permanent or electromagnet and its strength may be varied. The vertical scanning system comprises an array of conductors 116, 118, Fig. 4, interconnected by strip resistors 117, 121 and a conductive layer 126 on the phosphor screen 50. A conductive coating on the inside of the envelope in the vicinity of the scanning magnet 56, Fig. 9, is provided with window openings interconnected by slits to prevent the circulation of eddy currents. High resistance coatings may be provided in the window openings to prevent the building up of stray electrical charges. Specification 997,576 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14186361A | 1961-09-29 | 1961-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB997575A true GB997575A (en) | 1965-07-07 |
Family
ID=22497591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3672962A Expired GB997575A (en) | 1961-09-29 | 1962-09-27 | Improvements in cathode ray tubes |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1230927B (en) |
| ES (1) | ES281161A1 (en) |
| GB (1) | GB997575A (en) |
| NL (1) | NL283759A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE564397A (en) * | 1957-01-30 |
-
0
- NL NL283759D patent/NL283759A/xx unknown
-
1962
- 1962-09-27 GB GB3672962A patent/GB997575A/en not_active Expired
- 1962-09-28 DE DEG36033A patent/DE1230927B/en active Pending
- 1962-09-29 ES ES281161A patent/ES281161A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1230927B (en) | 1966-12-22 |
| NL283759A (en) | |
| ES281161A1 (en) | 1963-02-01 |
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