GB595330A - Television transmitting apparatus - Google Patents
Television transmitting apparatusInfo
- Publication number
- GB595330A GB595330A GB2496/45A GB249645A GB595330A GB 595330 A GB595330 A GB 595330A GB 2496/45 A GB2496/45 A GB 2496/45A GB 249645 A GB249645 A GB 249645A GB 595330 A GB595330 A GB 595330A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mosaic
- sensitive
- red
- light
- blue
- 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
- 239000011521 glass Substances 0.000 abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052787 antimony Inorganic materials 0.000 abstract 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
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
- H01J29/39—Charge-storage screens
- H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
-
- 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
- H01J31/26—Image pick-up tubes having an input of visible light and electric output
- H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
- H01J31/40—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode, i.e. having "triode action"
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Abstract
595,330. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 31, 1945, No. 2496. Convention date, Oct. 23, 1942. [Class 39 (i)] In a cathode-ray tube for television transmission the target, Fig. 2, comprises an insulating foundation 19 backed by a signal plate 21 and supporting two photoelectric mosaics capacitatively separated from the signal plate, one 31 being sensitive to long wavelength light and the other 29 to light of shorter wavelength. In the form described, mosaic 31 is of blue-sensitive caesiated antimony particles on the surface of a thin glass sheet 19 backed by a transparent platinum film 21 and there are disposed in recesses 27 in the glass sheet patches 29 of caesiated silver mosaic or continuous film which collectively comprise a red or infra-red sensitive mosaic nearer than 31 to the signal plated In use, Fig. 1, preferably in a tube such as described in Specification 542,219 in which scanning is effected by a low-velocity electron beam to reduce 'secondary emission, the optical image of a picture-object 15, which is illuminated with bluish light, creates a charge image on the mosaic 31. The composite mosaic 29 is continuously irradiated with constant red light 33 and the escape of photo-electrons from the patches 29 to a collector is controlled by the positive field of the charge on the mosaic 31 to a degree depending on the local brightness of the blue picture. Thus the charge image built up on the red-sensitive mosaic is a replica of that on the blue-sensitive mosaic but of greater intensity to a degree depending on the intensity of the red lighting. The combined charge images are scanned to develop picture signals and discharge the mosaics. Specification 542,332 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US463066A US2401786A (en) | 1942-10-23 | 1942-10-23 | Television transmitting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB595330A true GB595330A (en) | 1947-12-02 |
Family
ID=23838732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2496/45A Expired GB595330A (en) | 1942-10-23 | 1945-01-31 | Television transmitting apparatus |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2401786A (en) |
| GB (1) | GB595330A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2617073A (en) * | 1947-01-10 | 1952-11-04 | Andrew V Haeff | Signal integrating tube for radar |
| US2544754A (en) * | 1947-12-04 | 1951-03-13 | Bell Telephone Labor Inc | Electron camera tube |
| BE486171A (en) * | 1948-01-29 | |||
| US2550316A (en) * | 1949-01-29 | 1951-04-24 | Remington Rand Inc | Image storage device |
| US2773992A (en) * | 1953-06-17 | 1956-12-11 | Itt | Display amplifier and method of making same |
| US3358171A (en) * | 1962-12-28 | 1967-12-12 | Tokyo Shibaura Electric Co | Bistable writing type storage tube wherein metal sections are disposed in the respective wires of the target mesh |
| US3398317A (en) * | 1965-01-12 | 1968-08-20 | Stanford Research Inst | Information storage tube |
-
1942
- 1942-10-23 US US463066A patent/US2401786A/en not_active Expired - Lifetime
-
1945
- 1945-01-31 GB GB2496/45A patent/GB595330A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2401786A (en) | 1946-06-11 |
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