GB1236199A - A method of manufacturing pick-up tubes - Google Patents
A method of manufacturing pick-up tubesInfo
- Publication number
- GB1236199A GB1236199A GB3199669A GB3199669A GB1236199A GB 1236199 A GB1236199 A GB 1236199A GB 3199669 A GB3199669 A GB 3199669A GB 3199669 A GB3199669 A GB 3199669A GB 1236199 A GB1236199 A GB 1236199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- target
- faceplate
- photocathode
- tube body
- tube
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000000919 ceramic Substances 0.000 abstract 3
- 239000003513 alkali Substances 0.000 abstract 2
- 239000011888 foil Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 239000012300 argon atmosphere Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 229910052738 indium Inorganic materials 0.000 abstract 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 abstract 1
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 abstract 1
- 239000012212 insulator Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 229910000679 solder Inorganic materials 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
1,236,199. Pick up tubes; processing. FERNSEH G.m.b.H. 25 June, 1969 [27 June, 1968], No. 31996/69. Heading H1D. A method of manufacturing a pick up tube (e.g. SEC type) including a photocathode and target spaced sufficiently that, without focusing, a 1: 1 image is formed on the target under a high accelerating voltage, comprises introducing the faceplate 15 into an auxiliary vessel 32 to which the tube body 31 including the target assembly (7) (Fig. 2, not shown) in its final position and the tube foot carrying the electron gun 24 is sealed to form a hermetic enclosure. The faceplate is displaceable toward the tube body and the vessel contains an alkali generator 33 which may be displaceable magnetically, and a displaceable vapourizer 34 for the photocathode base layer (e.g. Sb or Ag-Bi) the vapourizer being displaced to a position between the faceplate and tube body for deposition in vacuum, the alkali generator activated, the faceplate displaced by magnetic or bellow techniques for instance and sealed to the tube body, the auxiliary vessel then being removed. The faceplate may be sealed by low melting point solder such as indium or indium-tin. During both evaporation processes, oxygen may be introduced to increase the photocathode sensitivity. Screening plate 34<SP>1</SP> or a loosely fitting plate covering the open end tube may be provided. The target may be a support of transparent Al foil upon a collodion skin soldered to a mesh foil, upon which a porous SEC coating (e.g. KC1) may be evaporated in an argon atmosphere. The target assembly may include target (7) (Fig. 2, not shown) suppressor mesh (8) and field mesh (9), soldered to flange rings (7a) (8a) (9a) respectively, and mounted on ceramic rings (10) (11) (12). Each electrode may have a contact strip bent round the ceramic ring and bearing against a wall contact. A spring on ring (7a) ensures the prescribed spacing between photocathode and target. Alternatively a low capacitance target assembly may include piles of ceramic insulators (36) (Fig. 4, not shown) aligned with wires (37) which may serve as electrical contacts. Reference is made to TV tubes for colour reproduction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681762490 DE1762490A1 (en) | 1968-06-27 | 1968-06-27 | Process for the manufacture of image pick-up tubes and image pick-up tubes manufactured by this method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236199A true GB1236199A (en) | 1971-06-23 |
Family
ID=5697035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3199669A Expired GB1236199A (en) | 1968-06-27 | 1969-06-25 | A method of manufacturing pick-up tubes |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1762490A1 (en) |
| GB (1) | GB1236199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2192485A (en) * | 1986-06-03 | 1988-01-13 | Philips Nv | Method of manufacturing a photomultiplier tube having a proximity multiplier element |
-
1968
- 1968-06-27 DE DE19681762490 patent/DE1762490A1/en active Pending
-
1969
- 1969-06-25 GB GB3199669A patent/GB1236199A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2192485A (en) * | 1986-06-03 | 1988-01-13 | Philips Nv | Method of manufacturing a photomultiplier tube having a proximity multiplier element |
| GB2192485B (en) * | 1986-06-03 | 1990-02-14 | Philips Nv | Method of manufacturing a photomultiplier tube having a proximity multiplier element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1762490A1 (en) | 1970-08-20 |
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