GB1245387A - Improvements in or relating to image-converter electron tubes - Google Patents
Improvements in or relating to image-converter electron tubesInfo
- Publication number
- GB1245387A GB1245387A GB2954770A GB2954770A GB1245387A GB 1245387 A GB1245387 A GB 1245387A GB 2954770 A GB2954770 A GB 2954770A GB 2954770 A GB2954770 A GB 2954770A GB 1245387 A GB1245387 A GB 1245387A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- aperture
- frusto
- june
- image
- 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
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/36—Photoelectric screens; Charge-storage screens
- H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
Abstract
1,245,387. Image intensifier tubes. ALBISWERK ZURICH A.G. 18 June, 1970 [19 June, 1969], No. 29547/70. Heading H1D. An image intensifier tube comprising a luminescent screen (not shown) on which electrons from a photocathode 2 are focused by a lens 9 including a frusto-conical part 9b and a cylindrical part 9a provided with at least one aperture 10 for the insertion of a vaporizer during the deposition of the cathode, is characterized by the provision of a cylindrical screen 8 surrounding the electrode 9 to prevent external electric fields from penetrating the aperture 10. The screen 8 is provided with an aperture 11 for the insertion of a vaporizer through the envelope at 7 and may include a second diametrically opposed aperture. The end of the screen 8 may be rolled over at 12, or the space between the two cylinders may be closed off by a ring welded to both of them; the end of the frusto-conical portion 9b should be welded to the screen 8. Cathode potential is extended as far as the lens via cylinders 4 and 5, the cylinder 4 being fused to the glass envelope portion 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH936869A CH493933A (en) | 1969-06-19 | 1969-06-19 | Image converter tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1245387A true GB1245387A (en) | 1971-09-08 |
Family
ID=4351254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2954770A Expired GB1245387A (en) | 1969-06-19 | 1970-06-18 | Improvements in or relating to image-converter electron tubes |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT313382B (en) |
| BE (1) | BE752172A (en) |
| CH (1) | CH493933A (en) |
| DE (1) | DE2027321B2 (en) |
| DK (1) | DK122359B (en) |
| FR (1) | FR2052750A5 (en) |
| GB (1) | GB1245387A (en) |
| NL (1) | NL7005438A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH656937A5 (en) * | 1982-09-24 | 1986-07-31 | Superpart Ag | EXHAUST PIPE ADAPTER. |
-
1969
- 1969-06-19 CH CH936869A patent/CH493933A/en not_active IP Right Cessation
-
1970
- 1970-04-10 AT AT332170A patent/AT313382B/en active
- 1970-04-15 NL NL7005438A patent/NL7005438A/xx unknown
- 1970-04-27 DK DK210870A patent/DK122359B/en unknown
- 1970-06-03 DE DE19702027321 patent/DE2027321B2/en active Granted
- 1970-06-17 FR FR7022365A patent/FR2052750A5/fr not_active Expired
- 1970-06-18 BE BE752172D patent/BE752172A/en unknown
- 1970-06-18 GB GB2954770A patent/GB1245387A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2027321A1 (en) | 1970-12-23 |
| NL7005438A (en) | 1970-12-22 |
| CH493933A (en) | 1970-07-15 |
| DE2027321B2 (en) | 1973-11-22 |
| AT313382B (en) | 1974-02-11 |
| BE752172A (en) | 1970-12-01 |
| FR2052750A5 (en) | 1971-04-09 |
| DK122359B (en) | 1972-02-21 |
| DE2027321C3 (en) | 1974-06-20 |
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