ES463748A1 - Low-pressure mercury vapour discharge lamp - Google Patents

Low-pressure mercury vapour discharge lamp

Info

Publication number
ES463748A1
ES463748A1 ES463748A ES463748A ES463748A1 ES 463748 A1 ES463748 A1 ES 463748A1 ES 463748 A ES463748 A ES 463748A ES 463748 A ES463748 A ES 463748A ES 463748 A1 ES463748 A1 ES 463748A1
Authority
ES
Spain
Prior art keywords
low
pressure mercury
discharge lamp
amount
mercury vapour
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
Application number
ES463748A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES463748A1 publication Critical patent/ES463748A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Luminescent Compositions (AREA)

Abstract

Refinements introduced in a low-pressure mercury vapor discharge lamp having a hermetic, radiation-transmitting vacuum discharge pipe having a nominal length of 60-150 cm, an internal diameter of between 20 and 28 mm, and that it is designed to consume during operation a nominal power of 0.25-0.50 w per cm of length of the discharge tube, which tube contains an amount of mercury, an amount of rare gas and a luminescent layer comprising a trivalent europium-activated rare earth metal oxide that emits red luminescence, having a composition defined by the formula Ln2O3; pEu, where Ln represents at least one of the metals Y, Gd and Lu and where 0.01 <= p <= 0.20. (Machine-translation by Google Translate, not legally binding)
ES463748A 1976-11-02 1977-10-31 Low-pressure mercury vapour discharge lamp Expired ES463748A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7612158A NL7612158A (en) 1976-11-02 1976-11-02 LOW-PRESSURE MERCURY DISCHARGE LAMP.

Publications (1)

Publication Number Publication Date
ES463748A1 true ES463748A1 (en) 1978-06-16

Family

ID=19827158

Family Applications (1)

Application Number Title Priority Date Filing Date
ES463748A Expired ES463748A1 (en) 1976-11-02 1977-10-31 Low-pressure mercury vapour discharge lamp

Country Status (9)

Country Link
JP (1) JPS5358176A (en)
BE (1) BE860369A (en)
BR (1) BR7707264A (en)
DE (1) DE2747259C2 (en)
ES (1) ES463748A1 (en)
FR (1) FR2369680A1 (en)
GB (1) GB1565129A (en)
IT (1) IT1088175B (en)
NL (1) NL7612158A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3449258A (en) * 1965-07-22 1969-06-10 Westinghouse Electric Corp Method for preparing europium activated yttrium oxide and gadolinium oxide phosphors
CA971214A (en) * 1971-11-12 1975-07-15 Matsushita Electronics Corporation Fluorescent tube for lamp
NL164697C (en) * 1973-10-05 1981-01-15 Philips Nv LOW-PRESSURE MERCURY DISCHARGE LAMP.

Also Published As

Publication number Publication date
BE860369A (en) 1978-05-02
DE2747259A1 (en) 1978-05-03
JPS5358176A (en) 1978-05-25
GB1565129A (en) 1980-04-16
DE2747259C2 (en) 1982-10-07
BR7707264A (en) 1978-07-18
FR2369680A1 (en) 1978-05-26
FR2369680B1 (en) 1982-10-15
IT1088175B (en) 1985-06-10
NL7612158A (en) 1978-05-05

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19971103