GB1319850A - Image intensifiers and the like - Google Patents
Image intensifiers and the likeInfo
- Publication number
- GB1319850A GB1319850A GB5481770A GB1319850DA GB1319850A GB 1319850 A GB1319850 A GB 1319850A GB 5481770 A GB5481770 A GB 5481770A GB 1319850D A GB1319850D A GB 1319850DA GB 1319850 A GB1319850 A GB 1319850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- meniscus
- channel
- aluminium
- membrane
- 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
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
- H01J43/18—Electrode arrangements using essentially more than one dynode
- H01J43/24—Dynodes having potential gradient along their surfaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
Landscapes
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Printing Plates And Materials Therefor (AREA)
Abstract
1319850 Electrode processing MULLARD Ltd 28 Sept 1971 [18 Nov 1970] 54817/70 Heading H1D A membrane obturating the end of each channel of a channel electron multiplier is formed by allowing a liquid to form a meniscus at the mouth of each channel, solidifying the meniscus to form a temporary support on which the membrane is formed, and removing the temporary support. The liquid may be solidified by freezing or it may contain a dispersion of fine particles which are caused to emerge from the liquid and form a surface film by physical means, such as heat, ultrasonics or electrical treatment, or by chemical means such as adding electrolytes or surfactants or charging the pH value. The membrane is preferably of aluminium and may form an input electrode or may be applied after a separate input electrode has been formed. In one process the liquid is an emulsion of poly-2-ethoxyethyl methacrylate in water, the solids content being 0À6%. A channel plate is dipped into the emulsion so that the liquid rises by capillary action and the plate is then inverted over an infra-red lamp the heat from which causes the emulsion particles to form a solid plastic film over the exposed meniscus surface. After drying out the liquid remaining in the channels, the plate is located on a table which rotates in an evacuated chamber whilst a 500Š layer of aluminium is evaporated over the plastic film, and the latter is removed by baking. If a non-reflecting black layer is required, a second aluminium layer can be evaporated through an inert gas on to the first aluminium layer. If the channels have a diameter of less than 100 microns, the process of infra-red heating causes the meniscus to withdraw from the end, and this can be prevented by supporting a mesh 0À5-1 mm above the top surface and filling this space with water to provide a reservoir.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5481770 | 1970-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1319850A true GB1319850A (en) | 1973-06-13 |
Family
ID=10472163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5481770A Expired GB1319850A (en) | 1970-11-18 | 1970-11-18 | Image intensifiers and the like |
Country Status (4)
Country | Link |
---|---|
US (1) | US3781979A (en) |
DE (1) | DE2156546A1 (en) |
FR (1) | FR2114744A5 (en) |
GB (1) | GB1319850A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6681648B1 (en) * | 2001-04-04 | 2004-01-27 | The Regents Of The University Of California | Meniscus membranes for separations |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA788057A (en) * | 1968-06-18 | Adams John | Image intensifier | |
CA617300A (en) * | 1956-12-26 | 1961-03-28 | Wargo Peter | Long-life rugged storage structure for electronic tubes |
US3005125A (en) * | 1957-12-05 | 1961-10-17 | Sylvania Electric Prod | Display screen |
US3197662A (en) * | 1960-03-11 | 1965-07-27 | Westinghouse Electric Corp | Transmissive spongy secondary emitter |
US3243642A (en) * | 1962-10-30 | 1966-03-29 | Radames K H Gebel | Image intensifier |
GB1090406A (en) * | 1963-08-19 | 1967-11-08 | Mullard Ltd | Improvements in or relating to image intensifiers and the like |
US3319318A (en) * | 1964-02-24 | 1967-05-16 | Stanford Research Inst | Thin gas tight window assembly |
US3562894A (en) * | 1967-06-21 | 1971-02-16 | Weston Instruments Inc | Method of making electron multiplier wafer |
GB1175599A (en) * | 1967-11-28 | 1969-12-23 | Mullard Ltd | Improvements in or relating to Image Intensifiers and the like |
GB1216497A (en) * | 1968-06-18 | 1970-12-23 | Mullard Ltd | Improvements in or relating to electron multiplier and like devices |
-
1970
- 1970-11-18 GB GB5481770A patent/GB1319850A/en not_active Expired
-
1971
- 1971-11-08 US US00196289A patent/US3781979A/en not_active Expired - Lifetime
- 1971-11-15 DE DE19712156546 patent/DE2156546A1/en active Pending
- 1971-11-16 FR FR7140941A patent/FR2114744A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2114744A5 (en) | 1972-06-30 |
DE2156546A1 (en) | 1972-05-31 |
US3781979A (en) | 1974-01-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |