GB473587A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB473587A GB473587A GB6962/37A GB696237A GB473587A GB 473587 A GB473587 A GB 473587A GB 6962/37 A GB6962/37 A GB 6962/37A GB 696237 A GB696237 A GB 696237A GB 473587 A GB473587 A GB 473587A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- layer
- discharge
- march
- partly
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
473,587. Glass manufacture. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 9, 1937, No. 6962. Convention date, March 12, 1936. Drawings to Specification. [Class 56] [Also in Groups XL and XX] The envelope of a discharge tube filled with gas or vapour is made at least partly of fluorescent glass which is coated on the side turned towards the discharge entirely or partly with a layer of material, such as boric or phosphoric acid, which is more resistant than the glass to the discharge and is transparent to the rays producing fluorescence in the glass. The deterioration of the fluorescent glass is reduced by the protective layer; life curves of lamps with and without the layer are shown and compared. Additional fluorescent material such as zinc silicate may be provided in or on the protective layer, for example, as an inner layer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE473587X | 1936-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB473587A true GB473587A (en) | 1937-10-15 |
Family
ID=6541596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6962/37A Expired GB473587A (en) | 1936-03-12 | 1937-03-09 | Improvements in or relating to electric discharge tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB473587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE759746C (en) * | 1940-01-28 | 1952-09-22 | Glaswerk Gust Fischer | Electric discharge tubes with luminescent walls and process for their manufacture |
-
1937
- 1937-03-09 GB GB6962/37A patent/GB473587A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE759746C (en) * | 1940-01-28 | 1952-09-22 | Glaswerk Gust Fischer | Electric discharge tubes with luminescent walls and process for their manufacture |
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