GB872607A - Improvements in and relating to cathode ray tube apparatus and systems - Google Patents
Improvements in and relating to cathode ray tube apparatus and systemsInfo
- Publication number
- GB872607A GB872607A GB37640/57A GB3764057A GB872607A GB 872607 A GB872607 A GB 872607A GB 37640/57 A GB37640/57 A GB 37640/57A GB 3764057 A GB3764057 A GB 3764057A GB 872607 A GB872607 A GB 872607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- radiation
- strips
- tube
- green
- layer
- 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
- 230000005855 radiation Effects 0.000 abstract 10
- -1 magnesium activated zinc orthosilicate Chemical class 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- ZOIVSVWBENBHNT-UHFFFAOYSA-N dizinc;silicate Chemical class [Zn+2].[Zn+2].[O-][Si]([O-])([O-])[O-] ZOIVSVWBENBHNT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052732 germanium Inorganic materials 0.000 abstract 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 238000001228 spectrum Methods 0.000 abstract 1
- RNWHGQJWIACOKP-UHFFFAOYSA-N zinc;oxygen(2-) Chemical class [O-2].[Zn+2] RNWHGQJWIACOKP-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/22—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information
- H04N9/24—Picture reproducers using cathode ray tubes using the same beam for more than one primary colour information using means, integral with, or external to, the tube, for producing signal indicating instantaneous beam position
-
- 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
- H01J29/18—Luminescent screens
- H01J29/26—Luminescent screens with superimposed luminescent layers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Luminescent Compositions (AREA)
- Radiation-Therapy Devices (AREA)
Abstract
872,607. Cathode-ray tubes. PHILCO CORPORATION. Dec. 3, 1957 [Dec. 3, 1956], No. 37640/57. Class 39(1). A cathode-ray tube has a luminescent screen provided with portions emitting radiations of two different ranges of wavelengths and with a covering layer deposited on these portions for reflecting radiation of one range of wavelengths while transmitting radiation of the other range of wavelengths. In a colour television tube the green strips 44 are also indexing strips emitting ultra-violet or infra-red radiation. This radiation is transmitted through the layer 50 to a photocell 65 controlling the indexing system. A window 70 is provided in the wall of the tube for the emergence of the radiation. Anode layer 34 may be constituted to reflect the radiation as described in Specification 822,017. The glass face plate 60 of the tube may also be constructed to reflect the radiation. For emitting ultra-violet radiation the green strips, e.g. of magnesium activated zinc orthosilicate; may include unactivated zinc orthosilicate which also serves to balance the light output of the green strips relative to that of the blue and red strips as described in Specification 753,452. Alternatively there may be used activated zinc oxide which has two peaks of emission, one in the green region of the spectrum and the other near the ultra-violet region. Layer 50 may be of silver. For emitting infra-red radiation, the green strips may include manganese activated magnesium silicate. Layer 50 then consists of silicon, or germanium. Indexing material may be placed in the spaces between the colour phosphors instead of in one of the phosphor strips. The invention may also be applied to a monochrome tube in which indexing signals are used to stabilise the linearity of sweep.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US625734A US2923846A (en) | 1956-12-03 | 1956-12-03 | Electrical systems |
| FR816838A FR1248229A (en) | 1956-12-03 | 1960-01-27 | Cathode ray tubes for color television receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB872607A true GB872607A (en) | 1961-07-12 |
Family
ID=26184931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37640/57A Expired GB872607A (en) | 1956-12-03 | 1957-12-03 | Improvements in and relating to cathode ray tube apparatus and systems |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2923846A (en) |
| DE (1) | DE1230453B (en) |
| FR (1) | FR1248229A (en) |
| GB (1) | GB872607A (en) |
| NL (1) | NL247954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3152042C2 (en) * | 1980-05-29 | 1989-01-05 | Mitsubishi Denki K.K., Tokio/Tokyo, Jp |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3177389A (en) * | 1961-03-30 | 1965-04-06 | Rca Corp | Color-kinescopes of the line-screen sensing variety |
| US3164744A (en) * | 1961-05-23 | 1965-01-05 | Rca Corp | Color tube beam indexing with ultra-violet rays |
| US3280250A (en) * | 1962-06-01 | 1966-10-18 | Scope Inc | Color television receiver including means for scanning the same horizontal lines during consecutive fields |
| GB1175698A (en) * | 1965-12-27 | 1969-12-23 | Sony Corp | Colour Cathode Ray Tube |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2633547A (en) * | 1950-06-30 | 1953-03-31 | Rca Corp | Two-sided electron-sensitive screen |
| US2951113A (en) * | 1954-05-27 | 1960-08-30 | Itt | Color television receiver |
| US2737608A (en) * | 1954-11-29 | 1956-03-06 | Rca Corp | Color image reproduction apparatus |
| US2774908A (en) * | 1955-03-30 | 1956-12-18 | Rca Corp | Cathode-ray tubes of the feed-back variety |
-
1956
- 1956-12-03 US US625734A patent/US2923846A/en not_active Expired - Lifetime
-
1957
- 1957-12-03 GB GB37640/57A patent/GB872607A/en not_active Expired
-
1960
- 1960-01-27 FR FR816838A patent/FR1248229A/en not_active Expired
- 1960-02-01 NL NL247954D patent/NL247954A/nl unknown
- 1960-02-01 DE DEP24359A patent/DE1230453B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3152042C2 (en) * | 1980-05-29 | 1989-01-05 | Mitsubishi Denki K.K., Tokio/Tokyo, Jp |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1230453B (en) | 1966-12-15 |
| FR1248229A (en) | 1960-12-09 |
| US2923846A (en) | 1960-02-02 |
| NL247954A (en) | 1964-03-10 |
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