GB467692A - Improvements in or relating to electric discharge lamps - Google Patents
Improvements in or relating to electric discharge lampsInfo
- Publication number
- GB467692A GB467692A GB799136A GB799136A GB467692A GB 467692 A GB467692 A GB 467692A GB 799136 A GB799136 A GB 799136A GB 799136 A GB799136 A GB 799136A GB 467692 A GB467692 A GB 467692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- light
- neon
- luminescent material
- violet
- 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
-
- 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
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Discharge Lamp (AREA)
Abstract
467,692. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent Treuhand-Ges. f³r Elektrische Gl³hlampen) March 17, 1936, No. 7991. [Class 39 (i)] [Also in Group XI] An electric discharge lamp comprises means for exciting the neon spectrum by the passage of a discharge through a filling mainly or wholly of neon, luminescent material excited by the discharge to emit visible light and a coloured light filter located in the path to the observer of the light from both the discharge and the luminescent material, the filter being adapted to transmit a substantial proportion of red neon light. Preferably the discharge is pure neon at 1-5 mms. pressure, the luminescent material, for example calcium tungstate, emits blue light, and the filter is bright blue, for example a blue glass envelope on the inner surface of which the calcium tungstate is coated. The resulting light is then violet. The luminescent material may be in the form of letters. Cold or thermionic electrodes may be employed. The prior use, for producing violet light, of a helium discharge in a violet envelope or of a neon discharge continually supplied with hydrogen, is referred to and the use of neonmercury mixtures emitting an appreciable mercury spectrum is disclaimed. Specifications 276,018, [Class 39 (i)], 362,885, and 457,486 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB799136A GB467692A (en) | 1936-03-17 | 1936-03-17 | Improvements in or relating to electric discharge lamps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB799136A GB467692A (en) | 1936-03-17 | 1936-03-17 | Improvements in or relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB467692A true GB467692A (en) | 1937-06-22 |
Family
ID=9843662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB799136A Expired GB467692A (en) | 1936-03-17 | 1936-03-17 | Improvements in or relating to electric discharge lamps |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB467692A (en) |
-
1936
- 1936-03-17 GB GB799136A patent/GB467692A/en not_active Expired
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