GB493298A - Improvements in electric lamps comprising combinations of electric discharge devices with materials excited to luminescence by the radiation from the discharge therein - Google Patents
Improvements in electric lamps comprising combinations of electric discharge devices with materials excited to luminescence by the radiation from the discharge thereinInfo
- Publication number
- GB493298A GB493298A GB963337A GB963337A GB493298A GB 493298 A GB493298 A GB 493298A GB 963337 A GB963337 A GB 963337A GB 963337 A GB963337 A GB 963337A GB 493298 A GB493298 A GB 493298A
- Authority
- GB
- United Kingdom
- Prior art keywords
- efficiency
- layer
- electric
- bulb
- discharge
- 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)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
493,298. Discharge lamps. GENERAL ELECTRIC CO., Ltd., RANDALL, J. T., and RYDE, J. W. April 5, 1937, No. 9633. [Class 39 (i)] [Also in Group XX] A high-pressure mercury-vapour lamp having an envelope of quartz or other glass transmitting radiations between 2,200 and 4000Š is enclosed within a glass bulb carrying on its inner surface a layer comprising at least two luminescent materials mainly excited by radiations of different wavelength, whereby the efficiency of the lamp is at least 15 per cent greater than in the absence of the layer. In an example, an 80 watt lamp having an efficiency of 38 lumens/watt is mounted in a bulb 110 cms. in diameter which is coated with a mixture of equal parts by weight of zinc orthosilicate and zinc sulphide, both luminescing green, at a surface density of 0À02 gram. /cm<2> . The bulb may be slightly frosted. If desired the layer may include luminescent material emitting red light for colour correction, but the prescribed increase in efficiency must be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB963337A GB493298A (en) | 1937-04-05 | 1937-04-05 | Improvements in electric lamps comprising combinations of electric discharge devices with materials excited to luminescence by the radiation from the discharge therein |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB963337A GB493298A (en) | 1937-04-05 | 1937-04-05 | Improvements in electric lamps comprising combinations of electric discharge devices with materials excited to luminescence by the radiation from the discharge therein |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493298A true GB493298A (en) | 1938-10-05 |
Family
ID=9875751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB963337A Expired GB493298A (en) | 1937-04-05 | 1937-04-05 | Improvements in electric lamps comprising combinations of electric discharge devices with materials excited to luminescence by the radiation from the discharge therein |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493298A (en) |
-
1937
- 1937-04-05 GB GB963337A patent/GB493298A/en not_active Expired
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