GB507037A - - Google Patents
Info
- Publication number
- GB507037A GB507037A GB507037DA GB507037A GB 507037 A GB507037 A GB 507037A GB 507037D A GB507037D A GB 507037DA GB 507037 A GB507037 A GB 507037A
- Authority
- GB
- United Kingdom
- Prior art keywords
- luminescent
- filter
- light
- passing
- absorbing
- 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.)
- Active
Links
Landscapes
- Optical Filters (AREA)
- Luminescent Compositions (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
Abstract
507,037. Luminescent screens. SIEMENS-REINIGER-WERKE AKT.-GES. Oct. 11, 1938, No. 29448. Convention date, Dec. 4, 1937. Addition to 426,789. Drawings to Specification. [Class 39 (i)] The luminescent screen described in the parent Specification which is provided with a filter passing some of the fluorescent light and absorbing light deleterious to the luminescent coating is modified by the use of a filter, passing all visible light and absorbing part at least of the ultraviolet light especially the long-wave ultraviolet. A suitable filter comprises a thin layer of cellulose acetate con - taining #-umbelliferone-acetate. The filter dye may also be incorporated in the binding material of the luminescent layer.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB507037A true GB507037A (en) |
Family
ID=1747626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB507037D Active GB507037A (en) |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB507037A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2419177A (en) * | 1944-12-09 | 1947-04-15 | Du Mont Allen B Lab Inc | Cathode-ray tube coating |
| US2428792A (en) * | 1945-06-28 | 1947-10-14 | George H Evans | Illumination system |
| US2436847A (en) * | 1940-05-10 | 1948-03-02 | Int Standard Electric Corp | Cathode-ray tube and visual indicating system for apparatus including cathode-ray tube |
| US2653109A (en) * | 1942-08-21 | 1953-09-22 | Joseph L Switzer | Light-responsive fluorescent media |
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0
- GB GB507037D patent/GB507037A/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2436847A (en) * | 1940-05-10 | 1948-03-02 | Int Standard Electric Corp | Cathode-ray tube and visual indicating system for apparatus including cathode-ray tube |
| US2653109A (en) * | 1942-08-21 | 1953-09-22 | Joseph L Switzer | Light-responsive fluorescent media |
| US2419177A (en) * | 1944-12-09 | 1947-04-15 | Du Mont Allen B Lab Inc | Cathode-ray tube coating |
| US2428792A (en) * | 1945-06-28 | 1947-10-14 | George H Evans | Illumination system |
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