JPS57195785A - Fluorescent substance - Google Patents
Fluorescent substanceInfo
- Publication number
- JPS57195785A JPS57195785A JP8086781A JP8086781A JPS57195785A JP S57195785 A JPS57195785 A JP S57195785A JP 8086781 A JP8086781 A JP 8086781A JP 8086781 A JP8086781 A JP 8086781A JP S57195785 A JPS57195785 A JP S57195785A
- Authority
- JP
- Japan
- Prior art keywords
- fluorescent substance
- rare earth
- ray
- activated
- luminescent
- 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
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: A fluorescent substance with a high luminescent efficiency at a high temp. emitting red light by means of UV ray, which is prepd. by adding a trace of Ge to an Eu-activated rare earth oxide fluorescent substance.
CONSTITUTION: Oxides of elements or raw material salts reading oxidizable by heating, each constituting the purpose fluorescent substance, are weighed in a determined proportion, mixed in a ball mill, etc., and fired at 1,000W1,500°C for 2W5hr to obtain an Eu-activated red light-emitting rare earth fluorescent material of the formula (wherein Ln is Y and/or Gd; 0<x≤0.01; 0.005≤y≤0.2).
EFFECT: It is possible for the fluorescent substance to effectively absorb UV ray emitted from the luminescent tube of a high-voltage mercury vapor lamp and to increase luminescent power because absorptioon spectrum extends to a longer wavelength region of UV ray than with a conventional Eu-activated rare earth oxide fluorescent material.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8086781A JPS57195785A (en) | 1981-05-29 | 1981-05-29 | Fluorescent substance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8086781A JPS57195785A (en) | 1981-05-29 | 1981-05-29 | Fluorescent substance |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57195785A true JPS57195785A (en) | 1982-12-01 |
Family
ID=13730288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8086781A Pending JPS57195785A (en) | 1981-05-29 | 1981-05-29 | Fluorescent substance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57195785A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012526184A (en) * | 2009-05-11 | 2012-10-25 | 海洋王照明科技股▲ふん▼有限公司 | Full-color luminescent material and preparation method thereof |
-
1981
- 1981-05-29 JP JP8086781A patent/JPS57195785A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012526184A (en) * | 2009-05-11 | 2012-10-25 | 海洋王照明科技股▲ふん▼有限公司 | Full-color luminescent material and preparation method thereof |
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