JPS57137382A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPS57137382A JPS57137382A JP2391981A JP2391981A JPS57137382A JP S57137382 A JPS57137382 A JP S57137382A JP 2391981 A JP2391981 A JP 2391981A JP 2391981 A JP2391981 A JP 2391981A JP S57137382 A JPS57137382 A JP S57137382A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- activated
- rare earth
- expressed
- fluorescent
- 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.)
- Pending
Links
Abstract
PURPOSE: A fluorescent lamp, prepared by forming a fluorescent substance layer containing a rare earth oxide fluorescent substance activated with Eu and a rare earth silicate fluorescent substance activated with Tb and an alkaline earth metallic halophosphate fluorescent substance activated with Eu on a specific glass tube, and having improved lamp efficiency.
CONSTITUTION: A fluorescent substance layer containing a rare earth oxide fluorescent substance, activated with Eu, and expressed by formulaI(Ln is Y, Gd or Lu), a rare earth silicate fluorescent substance, activated with Tb, and expressed by formula II (Ln is La or Y; x and y are as follows: 0.25≤x≤1; 0.005≤y≤0.4) and an alkaline earth metallic halophosphate fluorescent substance, activated with Eu, and expressed by formula III (Ma is simple Ca or Ba or two or more elements including further Sr ; Mb is Ca, Ba or Sr; X is F, Cl or Br) is formed on the inner surface of a glass tube having the inside diameter of 21W30mm to give the aimed fluorescent lamp.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2391981A JPS57137382A (en) | 1981-02-20 | 1981-02-20 | Fluorescent lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2391981A JPS57137382A (en) | 1981-02-20 | 1981-02-20 | Fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57137382A true JPS57137382A (en) | 1982-08-24 |
Family
ID=12123908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2391981A Pending JPS57137382A (en) | 1981-02-20 | 1981-02-20 | Fluorescent lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57137382A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622444A (en) * | 1985-06-27 | 1987-01-08 | Matsushita Electronics Corp | Fluorescent lamp |
-
1981
- 1981-02-20 JP JP2391981A patent/JPS57137382A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622444A (en) * | 1985-06-27 | 1987-01-08 | Matsushita Electronics Corp | Fluorescent lamp |
JPH0582015B2 (en) * | 1985-06-27 | 1993-11-17 | Matsushita Electronics Corp |
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