GB853070A - Improvements in or relating to the manufacture of electron discharge tubes having a photo-conductive target - Google Patents
Improvements in or relating to the manufacture of electron discharge tubes having a photo-conductive targetInfo
- Publication number
- GB853070A GB853070A GB15652/58A GB1565258A GB853070A GB 853070 A GB853070 A GB 853070A GB 15652/58 A GB15652/58 A GB 15652/58A GB 1565258 A GB1565258 A GB 1565258A GB 853070 A GB853070 A GB 853070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- evaporator
- envelope
- electrode assembly
- moved
- 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
- 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
- H01J9/233—Manufacture of photoelectric screens or charge-storage screens
Abstract
853,070. Television pick-up tubes. MULLARD Ltd. Dec. 11, 1958 [May 15, 1958], No. 15652/58. Class 39(1). A method of manufacturing a discharge device, such as a Vidicon television camera, which comprises an envelope terminating at one end in a window 4, Fig. 2, which carries a photoconductive target 52 and at the other end in a foot 27 from which the electrode structure is supported, includes the steps of providing an elongated tube 1 having an end portion 2 which is to constitute the envelope of the device and a further portion having a side arm 10 ; inserting the electrode structure 23 secured to the foot 27 within the tube with the foot remote from the window 4 ; and providing within the tube between the electrode structure and the window an evaporator 43 containing a supply of photo-conductive material such as antimony trisulphide. After evaporating this material to form the target layer the evaporator is withdrawn into the side arm, the electrode assembly is moved into its final position, the foot is sealed to the envelope 2 and the remainder of the elongated tube is separated from the envelope. As shown, the electrode assembly is supported by a socket 31 cemented to iron block 37 which is moved by means of annular magnet 45. During formation of the target layer in argon at low pressure, the evaporator 43 is supported 4À5 cms. from window 4 by a wire 42 having its end located in a socket 41 formed on the collector anode 23 and is heated by coil 50, the upper part of the tube being surrounded by a cooling jacket 46 and a ring 49 being provided to protect the fernicoring seal 3 from overheating. The evaporator and wire support may be lifted out of socket 41 by means of fork 15 secured to steel block 13 which is moved along the side arm by magnet 16. Prior to the formation of the target layer the electrode assembly may be moved into the end portion 2 of the tube, the evaporator being located in the side arm, and degassed by means of a cylindrical oven located about the tube. A liquid air trap 5 is provided to prevent grease vapour from the cone seal 7, connecting tube 1 to vacuum pump 9, from reaching the electrodes. When the electrode assembly has been moved into its final position, with collector mesh 25 2À5 mms. from the target spring contacts 34 press against platinum contacts to which voltages may be applied for activating the cathode of electron gun 24. After separating the envelope 2 from the remainder of tube 1, exhaust tube 28 may be connected to a vacuum pump via a tube containing a metal ball and the seal 29 broken by moving this ball by external magnetic means to enable the device to be finally evacuated. The evaporator may be of a kind described in Specification 853,101 and may alternatively, be supported on a disc 81, Fig. 12, lying across the end of anode 23. The lower portion of tube 1 may be of larger cr oss-section than portion 2 and the electrode terminals 30 may be connected to insulated segments of block 83, this block sliding on supply wires 84 so that electrical contact with the electrodes is possible for any position of the electrode assembly.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL239171D NL239171A (en) | 1958-05-15 | ||
GB15652/58A GB853070A (en) | 1958-05-15 | 1958-05-15 | Improvements in or relating to the manufacture of electron discharge tubes having a photo-conductive target |
US812641A US3084010A (en) | 1958-05-15 | 1959-05-12 | Manufacture of electron discharge tubes having a photo-conductive target |
DEN16703A DE1163463B (en) | 1958-05-15 | 1959-05-12 | Process for the manufacture of an electron beam scanning tube with a vapor-deposited, photoconductive target plate and arrangement for carrying out this process |
FR794674A FR1226800A (en) | 1958-05-15 | 1959-05-14 | Improvements in the manufacture of electronic discharge tubes fitted with a photoconductive target |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB15652/58A GB853070A (en) | 1958-05-15 | 1958-05-15 | Improvements in or relating to the manufacture of electron discharge tubes having a photo-conductive target |
Publications (1)
Publication Number | Publication Date |
---|---|
GB853070A true GB853070A (en) | 1960-11-02 |
Family
ID=10062991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15652/58A Expired GB853070A (en) | 1958-05-15 | 1958-05-15 | Improvements in or relating to the manufacture of electron discharge tubes having a photo-conductive target |
Country Status (5)
Country | Link |
---|---|
US (1) | US3084010A (en) |
DE (1) | DE1163463B (en) |
FR (1) | FR1226800A (en) |
GB (1) | GB853070A (en) |
NL (1) | NL239171A (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 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1143536A (en) * | 1965-02-23 | |||
US4530854A (en) * | 1982-09-23 | 1985-07-23 | Honeywell Inc. | Focusing device for external flashing of getters |
US4595375A (en) * | 1982-11-24 | 1986-06-17 | Hamamatsu Photonics Kabushiki Kaisha | Imaging and streaking tubes, and methods for fabricating the imaging and streaking tubes |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL61104C (en) * | ||||
US2733115A (en) * | 1956-01-31 | Apparatus for evaporating chemicals | ||
FR938487A (en) * | 1945-10-06 | 1948-09-16 | Emi Ltd | Deposit of material on a support through a cover |
US2667600A (en) * | 1950-10-02 | 1954-01-26 | Cathodeon Ltd | Television pickup tube |
US2744808A (en) * | 1952-08-27 | 1956-05-08 | Rca Corp | Apparatus for evaporating chemicals |
US2809087A (en) * | 1955-11-09 | 1957-10-08 | Rca Corp | Preparation of porous photoconductive layers |
-
0
- NL NL239171D patent/NL239171A/xx unknown
-
1958
- 1958-05-15 GB GB15652/58A patent/GB853070A/en not_active Expired
-
1959
- 1959-05-12 DE DEN16703A patent/DE1163463B/en active Pending
- 1959-05-12 US US812641A patent/US3084010A/en not_active Expired - Lifetime
- 1959-05-14 FR FR794674A patent/FR1226800A/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 |
---|---|
US3084010A (en) | 1963-04-02 |
NL239171A (en) | |
FR1226800A (en) | 1960-08-16 |
DE1163463B (en) | 1964-02-20 |
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