GB454348A - Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layer - Google Patents
Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layerInfo
- Publication number
- GB454348A GB454348A GB2289/36A GB228936A GB454348A GB 454348 A GB454348 A GB 454348A GB 2289/36 A GB2289/36 A GB 2289/36A GB 228936 A GB228936 A GB 228936A GB 454348 A GB454348 A GB 454348A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluorescent layer
- red
- discharge tube
- improved device
- vapour 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
- C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/33—Special shape of cross-section, e.g. for producing cool spot
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
A high-pressure mercury vapour lamp of the kind described in Specification 431,451, [Group XL], is used with a fluorescent layer on the cap of the lantern the layer consisting of Rhodamine B. This is dissolved in a condensation product obtained by heating 3 mol. symmetric dimethylglycol and 2 mol. of citric acid for 3 hours at 150 DEG C. and then 3 hours at 180 DEG C. After cooling down 4 kgs. of this product is dissolved in 4 kgs. acetone in which mixture 10 grs. of the rhodamine is dispersed, this mixture being then applied to the cap.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEN37928A DE655233C (en) | 1935-03-21 | 1935-03-21 | Electric high-pressure mercury vapor discharge tubes with glow electrode (s), especially for emitting rays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB454348A true GB454348A (en) | 1936-09-29 |
Family
ID=25943644
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2289/36A Expired GB454348A (en) | 1935-03-21 | 1936-01-24 | Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layer |
GB6855/36A Expired GB448685A (en) | 1935-03-21 | 1936-03-06 | Improvements in or relating to mercury-vapour electric discharge tubes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB6855/36A Expired GB448685A (en) | 1935-03-21 | 1936-03-06 | Improvements in or relating to mercury-vapour electric discharge tubes |
Country Status (4)
Country | Link |
---|---|
US (1) | US2094695A (en) |
DE (2) | DE655233C (en) |
FR (1) | FR803058A (en) |
GB (2) | GB454348A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10957827B2 (en) | 2004-05-07 | 2021-03-23 | Bruce H. Baretz | Light emitting diode |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2682006A (en) * | 1950-03-22 | 1954-06-22 | Scopicon Inc | Means for preventing external coating of water-cooled electric lamps |
US20020145875A1 (en) * | 2001-04-10 | 2002-10-10 | Perkinelmer Optoelectronics N.C., Inc. | Compact water-cooled multi-kilowatt lamp |
-
1935
- 1935-03-21 DE DEN37928A patent/DE655233C/en not_active Expired
- 1935-03-21 DE DEN37926A patent/DE667160C/en not_active Expired
-
1936
- 1936-01-24 GB GB2289/36A patent/GB454348A/en not_active Expired
- 1936-03-06 GB GB6855/36A patent/GB448685A/en not_active Expired
- 1936-03-09 FR FR803058D patent/FR803058A/en not_active Expired
- 1936-04-10 US US73746A patent/US2094695A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10957827B2 (en) | 2004-05-07 | 2021-03-23 | Bruce H. Baretz | Light emitting diode |
US11158768B2 (en) | 2004-05-07 | 2021-10-26 | Bruce H. Baretz | Vacuum light emitting diode |
Also Published As
Publication number | Publication date |
---|---|
DE667160C (en) | 1938-11-05 |
GB448685A (en) | 1936-06-12 |
DE655233C (en) | 1938-01-12 |
US2094695A (en) | 1937-10-05 |
FR803058A (en) | 1936-09-22 |
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