GB588295A - Improvements in fluorescent products and methods of preparation thereof - Google Patents
Improvements in fluorescent products and methods of preparation thereofInfo
- Publication number
- GB588295A GB588295A GB8086/44A GB808644A GB588295A GB 588295 A GB588295 A GB 588295A GB 8086/44 A GB8086/44 A GB 8086/44A GB 808644 A GB808644 A GB 808644A GB 588295 A GB588295 A GB 588295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coefficients
- varying
- mixture
- silicate
- beryllium
- 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
- 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
- H01J29/187—Luminescent screens screens with more than one luminescent material (as mixtures for the treatment of the screens)
Landscapes
- Luminescent Compositions (AREA)
Abstract
5 88 ,2 9 5 . Luminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. April 29, 1944, No. 8086. Convention date, Dec. 8, 1942. Drawings to Specification. [Class 39 (i)] A mixture of luminescent to give white light is prepared by selecting phosphors with trichromatic coefficients, each of winch is located on the same straight line substantially tangential to the locus of the trichromatic coefficients of black body radiation between temperatures of 2575‹ C. and 6227‹ C. An example is a mixture of manganese activated zinc beryllium silicate with silver activated zinc sulphide. The coefficients of the silicate can be adjusted by varying the ratio of zinc to beryllium and by varying the firing time and activator concentration. The sulphide coefficients can be varied by choice of activators, their concentration and firing time and temperature. As the area of a powder exposed to the bombardment of an electron beam is affected by the particle size, if coarse powder is used for a particular component, a greater amount should be used than if fine powder were employed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US588295XA | 1942-12-08 | 1942-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB588295A true GB588295A (en) | 1947-05-20 |
Family
ID=22019183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8086/44A Expired GB588295A (en) | 1942-12-08 | 1944-04-29 | Improvements in fluorescent products and methods of preparation thereof |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB588295A (en) |
-
1944
- 1944-04-29 GB GB8086/44A patent/GB588295A/en not_active Expired
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