GB672004A - Improvements in or relating to electron-optical image converter tubes - Google Patents
Improvements in or relating to electron-optical image converter tubesInfo
- Publication number
- GB672004A GB672004A GB28548/50A GB2854850A GB672004A GB 672004 A GB672004 A GB 672004A GB 28548/50 A GB28548/50 A GB 28548/50A GB 2854850 A GB2854850 A GB 2854850A GB 672004 A GB672004 A GB 672004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- tube
- electron
- cathode
- image converter
- 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/32—Fiducial marks and measuring scales within the optical system
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2231/00—Cathode ray tubes or electron beam tubes
- H01J2231/50—Imaging and conversion tubes
- H01J2231/50005—Imaging and conversion tubes characterised by form of illumination
- H01J2231/5001—Photons
- H01J2231/50015—Light
- H01J2231/50026—Infrared
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
672,004. image converter tubes. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 22, 1950 [Nov. 25, 1949], No. 28548/50. Class 39(i). In an electron-optical image converter tube the support of the photo-electrically active layer of the cathode also supports a layer adapted to be projected electron-optically on to the projection screen as a reference mark. As shown, the glass portion 2 is coated intern. ally with a thin but opaque aluminium layer 4, a window being formed by placing a mask on the inner wall 2 during the application of the layer. The mask has an aperture consisting of four slits forming a small cross, the point of intersection of which is in the axis of the tube, thus providing a cross 14 on the wall of the tube. A second very thin transparent layer 7 of silver activated by means of oxygen and caesium vapour extends over the layer 4 and forms a photo-electric cathode. The re-entrant portion of the tube carries a fluorescent screen 9 and an anode 10, the cathode-rays passing through an aperture 12 and being focused to produce an image on the screen 9.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL285928X | 1949-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB672004A true GB672004A (en) | 1952-05-14 |
Family
ID=19782511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB28548/50A Expired GB672004A (en) | 1949-11-25 | 1950-11-22 | Improvements in or relating to electron-optical image converter tubes |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2613330A (en) |
| BE (1) | BE499549A (en) |
| CH (1) | CH285928A (en) |
| DE (1) | DE832646C (en) |
| FR (1) | FR1028305A (en) |
| GB (1) | GB672004A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL77916C (en) * | 1950-10-30 | |||
| US2774909A (en) * | 1951-08-09 | 1956-12-18 | Hartford Nat Bank & Trust Co | Television pick-up tube comprising electrostatic electron-optical means |
| NL164251B (en) * | 1951-09-26 | Union Carbide Corp | PROCESS OF INCREASING THE MOL RATIO FROM SIO & 012 TO AL & 012O & 013 IN A CRYSTALLINE ALUMINO SILICATE ZEOLITE. | |
| DE924252C (en) * | 1953-04-20 | 1955-03-14 | Licentia Gmbh | Blind landing procedure for fired approach lines and runways |
| US2794140A (en) * | 1953-11-20 | 1957-05-28 | Rca Corp | Phototubes |
| US2878406A (en) * | 1954-07-23 | 1959-03-17 | Bergson Gustav | Photoelectric tube |
| US2922048A (en) * | 1958-08-14 | 1960-01-19 | Neel W Glass | High current coaxial photomultiplier tube |
| US3588570A (en) * | 1968-04-29 | 1971-06-28 | Westinghouse Electric Corp | Masked photocathode structure with a masked,patterned layer of titanium oxide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB499869A (en) * | 1937-06-26 | 1939-01-26 | Hans Gerhard Lubszynski | Improvements in or relating to electron discharge devices |
-
0
- BE BE499549D patent/BE499549A/xx unknown
-
1950
- 1950-11-04 US US194074A patent/US2613330A/en not_active Expired - Lifetime
- 1950-11-22 GB GB28548/50A patent/GB672004A/en not_active Expired
- 1950-11-22 DE DEN3143A patent/DE832646C/en not_active Expired
- 1950-11-23 FR FR1028305D patent/FR1028305A/en not_active Expired
- 1950-11-23 CH CH285928D patent/CH285928A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE499549A (en) | |
| FR1028305A (en) | 1953-05-21 |
| US2613330A (en) | 1952-10-07 |
| DE832646C (en) | 1952-02-28 |
| CH285928A (en) | 1952-09-30 |
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