GB1299608A - Pyrosilicate phosphor and lamp - Google Patents
Pyrosilicate phosphor and lampInfo
- Publication number
- GB1299608A GB1299608A GB62662/69A GB6266269A GB1299608A GB 1299608 A GB1299608 A GB 1299608A GB 62662/69 A GB62662/69 A GB 62662/69A GB 6266269 A GB6266269 A GB 6266269A GB 1299608 A GB1299608 A GB 1299608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phosphor
- pyrosilicate
- lamp
- phosphors
- dec
- 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
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
1299608 Luminescent materials GTE SYLVANIA Inc 23 Dec 1969 [23 Dec 1968] 62662/69 Heading C4S A phosphor comprises Eu activated alkaline earth pyrosilicate containing Mg. The phosphors have a general formula where M is Ca, Sr and/or Ba; 2À25 # a # 1À75, 1À25 # b # 0À75 and 0À40 # c # 0À0004. A single phase phosphor is prepared by blending alkaline earth and Mg carbonates, SiO 2 and Eu 2 O 3 with NH 4 Cl flux using glass balls and firing in 80% N 2 , 20% H 2 saturated with water vapour. The phosphors are used in Hg discharge lamps.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US78602668A | 1968-12-23 | 1968-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1299608A true GB1299608A (en) | 1972-12-13 |
Family
ID=25137376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB62662/69A Expired GB1299608A (en) | 1968-12-23 | 1969-12-23 | Pyrosilicate phosphor and lamp |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1299608A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000033389A1 (en) * | 1998-11-30 | 2000-06-08 | General Electric Company | Light emitting device with phosphor having high luminous efficacy |
EP1816179A1 (en) * | 2006-02-02 | 2007-08-08 | Nichia Corporation | Phosphor and light emitting device using the same |
-
1969
- 1969-12-23 GB GB62662/69A patent/GB1299608A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000033389A1 (en) * | 1998-11-30 | 2000-06-08 | General Electric Company | Light emitting device with phosphor having high luminous efficacy |
US6429583B1 (en) | 1998-11-30 | 2002-08-06 | General Electric Company | Light emitting device with ba2mgsi2o7:eu2+, ba2sio4:eu2+, or (srxcay ba1-x-y)(a1zga1-z)2sr:eu2+phosphors |
JP2002531955A (en) * | 1998-11-30 | 2002-09-24 | ゼネラル・エレクトリック・カンパニイ | Light emitting device using phosphor with high visibility |
EP1816179A1 (en) * | 2006-02-02 | 2007-08-08 | Nichia Corporation | Phosphor and light emitting device using the same |
US7608202B2 (en) | 2006-02-02 | 2009-10-27 | Nichia Corporation | Phosphor and light emitting device using the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1458700A (en) | Low-pressure mercury vapour discharge lamp apparatus suitable for use in mixing and dispensing a multi- | |
GB1208594A (en) | Preparation of phosphors | |
GB1301850A (en) | ||
GB1177316A (en) | Fluorescent Phosphor | |
ES466086A1 (en) | Luminescent aluminates and mercury vapor discharge lamp containing the same | |
GB1170919A (en) | Phosphor Materials for Arc Discharge Devices. | |
GB1131991A (en) | Fluorescent phosphor activated by divalent europium | |
GB1261799A (en) | Orthophosphate phosphors | |
GB1299608A (en) | Pyrosilicate phosphor and lamp | |
GB1166221A (en) | Lithium and Rare-Earth Activated Alkaline-Earth Metal Pyrophosphate Phosphors. | |
GB1264422A (en) | ||
GB1197279A (en) | Luminescent Materials | |
JPS5535422A (en) | Fluorescent lamp | |
GB1205298A (en) | Luminescent materials | |
GB1192730A (en) | Luminescent Materials | |
GB1333835A (en) | Luminescent materials | |
GB1255025A (en) | Phosphors | |
GB1125180A (en) | Improvements in calcium halophosphate phosphors | |
JPS52117290A (en) | Fluorescent substance | |
GB1382530A (en) | Magnesium aluminate gallate phosphor | |
GB1535468A (en) | Low-pressure mercury vapour discharge lamp | |
JPS57174379A (en) | Fluorescent lamp | |
JPS5535423A (en) | Fluorescent lamp | |
JPS5210875A (en) | Luminous compositions | |
JPS52104481A (en) | Luminous composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
48R | Reference inserted (sect. 8/1949) | ||
PLNP | Patent lapsed through nonpayment of renewal fees |