GB652354A - Improvements in electron optical systems - Google Patents
Improvements in electron optical systemsInfo
- Publication number
- GB652354A GB652354A GB24066/46A GB2406646A GB652354A GB 652354 A GB652354 A GB 652354A GB 24066/46 A GB24066/46 A GB 24066/46A GB 2406646 A GB2406646 A GB 2406646A GB 652354 A GB652354 A GB 652354A
- Authority
- GB
- United Kingdom
- Prior art keywords
- multiplier
- emitting material
- fluorescent screen
- magnetic fields
- electron
- 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
- H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
- H01J31/506—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output tubes using secondary emission effect
Landscapes
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Abstract
652,354. Discharge apparatus. SOC. D'APPLICATIONS TELEPHONIQUES. Aug. 13, 1946, No. 24066. Convention date, Sept. 11, 1944. [Class 39 (i)] An electron optical system comprises a photo-cathode 1, electron-multiplying surfaces 5, 6, 7, 8, 9, and a fluorescent screen 10 in an exhausted tube comprising two chambers joined by a throttled part, which contains the multiplier. Magnetic means 3, 4, 11 disposed outside the tube produce intense magnetic fields with non-rectilinear lines of force. The multiplying surfaces are semi-transparent to electrons, and substantially impervious to ions and atoms preventing their movement from one chamber to another and may comprise a fine tissue of metallic wires coated with secondaryelectron-emitting material. The Specification as open to inspection under Sect. 91 also describes the use of aluminium or glass fibres coated with secondary emitting material as the multiplier surfaces, and may replace the fluorescent screen by a photographic plate or similar system. It also refers to coils producing the required magnetic fields. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR906922T | 1944-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB652354A true GB652354A (en) | 1951-04-25 |
Family
ID=9405954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24066/46A Expired GB652354A (en) | 1944-09-11 | 1946-08-13 | Improvements in electron optical systems |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR906922A (en) |
| GB (1) | GB652354A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2772368A (en) * | 1951-08-10 | 1956-11-27 | Perforating Guns Atlas Corp | High temperature scintillometer |
-
1944
- 1944-09-11 FR FR906922D patent/FR906922A/en not_active Expired
-
1946
- 1946-08-13 GB GB24066/46A patent/GB652354A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR906922A (en) | 1946-02-25 |
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