JPS57137382A - Fluorescent lamp - Google Patents

Fluorescent lamp

Info

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
Application number
JP2391981A
Other languages
Japanese (ja)
Inventor
Katsuo Murakami
Tadashi Yanagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2391981A priority Critical patent/JPS57137382A/en
Publication of JPS57137382A publication Critical patent/JPS57137382A/en
Pending legal-status Critical Current

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
JP2391981A 1981-02-20 1981-02-20 Fluorescent lamp Pending JPS57137382A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS622444A (en) * 1985-06-27 1987-01-08 Matsushita Electronics Corp Fluorescent lamp

Cited By (2)

* Cited by examiner, † Cited by third party
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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