GB495549A - Improvements in or relating to electric gas-discharge lamps - Google Patents
Improvements in or relating to electric gas-discharge lampsInfo
- Publication number
- GB495549A GB495549A GB11113/38A GB1111338A GB495549A GB 495549 A GB495549 A GB 495549A GB 11113/38 A GB11113/38 A GB 11113/38A GB 1111338 A GB1111338 A GB 1111338A GB 495549 A GB495549 A GB 495549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamp
- luminescent
- layer
- luminescent glass
- rays
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
495,549. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 11, 1938, No. 11113. Convention date, April 13, 1937. Drawings to Specification. [Class 39 (i)] [Also in Groups XI and XX] The ultra-violet rays from a discharge lamp the majority of which are below 3300 Š, are caused to strike first a luminescent powder layer which absorbs 30 to 70 per cent of the rays to which it is responsive, and then fall upon a luminescent glass layer which responds to the same rays. The powder layer may be made thin while at the same time absorption losses in the luminescent glass are reduced. A lamp with a filling of mercury and neonargon mixture at 10 mms. pressure has an envelope of copper-activated luminescent glass, coated internally with a layer of willemite which absorbs 60 per cent of radiation below 3300 Š. Magnesium vapour may be used. Alternatively, the luminescent powder may be coated on the outside of the lamp, while the luminescent glass forms a further envelope surrounding the lamp. Specification 473,587 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE495549X | 1937-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB495549A true GB495549A (en) | 1938-11-15 |
Family
ID=6544908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11113/38A Expired GB495549A (en) | 1937-04-13 | 1938-04-11 | Improvements in or relating to electric gas-discharge lamps |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT155865B (en) |
| DK (1) | DK60157C (en) |
| FR (1) | FR836515A (en) |
| GB (1) | GB495549A (en) |
-
1938
- 1938-04-09 DK DK60157D patent/DK60157C/en active
- 1938-04-11 GB GB11113/38A patent/GB495549A/en not_active Expired
- 1938-04-12 FR FR836515D patent/FR836515A/en not_active Expired
- 1938-04-13 AT AT155865D patent/AT155865B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| DK60157C (en) | 1942-09-21 |
| FR836515A (en) | 1939-01-19 |
| AT155865B (en) | 1939-04-11 |
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