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GB737913A - Improvements in or relating to high pressure mercury vapour electric discharge lamps - Google Patents

Improvements in or relating to high pressure mercury vapour electric discharge lamps

Info

Publication number
GB737913A
GB737913A GB1308051A GB1308051A GB737913A GB 737913 A GB737913 A GB 737913A GB 1308051 A GB1308051 A GB 1308051A GB 1308051 A GB1308051 A GB 1308051A GB 737913 A GB737913 A GB 737913A
Authority
GB
United Kingdom
Prior art keywords
screen
lamp
outer jacket
luminescent material
jacket
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
GB1308051A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1308051A priority Critical patent/GB737913A/en
Priority to FR1057594D priority patent/FR1057594A/en
Publication of GB737913A publication Critical patent/GB737913A/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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/822—High-pressure mercury lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/34—Double-wall vessels or containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space

Landscapes

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

Abstract

737,913. Luminescent materials. GENERAL ELECTRIC CO., Ltd., and JENKINS, H. G. June 3, 1952 [June 1, 1951], No. 13080/51. Drawings to Specification. Class 39 (1). A high-pressure mercury vapour electric discharge lamp having the envelope mounted within a sealed glass outer jacket has luminescent material, having an optimum working temperature not less than 120‹ C. and an efficiency at 200‹ C. greater than that at room temperature, coated on a surface of at least one screen mounted within the outer jacket and spaced from both the lamp envelope and the outer jacket, the arrangement being such that in normal operation of the lamp the screen attains a temperature of not less than 200‹ C. Luminescent materials referred to are magnesium germanate or fluorogermanate activated by manganese, magnesium arsenate activated by manganese and barium strontium lithium silicates activated by cerium with or without manganese as described in Specification 737,914. The screen carrying the luminescent material may consist of a transparent or translucent vitreous hollow cylinder surrounding the inner envelope and the outer jacket can be of an opal or other diffusing nature, such as silica coated, and so designed that in normal operation of the lamp the mean temperature of the surface of the jacket does not exceed 150‹ C. The outer jacket can be provided with a coating of a luminescent material, e;g. blue fluorescing zinc sulphide, which has a lower operating temperature than the luminescent material on the screen and which is excited by long-wave ultra-violet radiation passing through the screen. The outer glass jacket may be spherical and may contain a filling of oxygen at less than atmospheric pressure and the inner lamp envelope may be a cylindrical quartz bulb containing a filling of mercury and argon. The lamp is operated with the axis of the cylindrical screen carrying the luminescent material vertical so as not to prevent the circulation of convection currents in the gas in the outer jacket. Auxiliary electrode starting means are provided.
GB1308051A 1951-06-01 1951-06-01 Improvements in or relating to high pressure mercury vapour electric discharge lamps Expired GB737913A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1308051A GB737913A (en) 1951-06-01 1951-06-01 Improvements in or relating to high pressure mercury vapour electric discharge lamps
FR1057594D FR1057594A (en) 1951-06-01 1952-05-31 Mercury vapor lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1308051A GB737913A (en) 1951-06-01 1951-06-01 Improvements in or relating to high pressure mercury vapour electric discharge lamps

Publications (1)

Publication Number Publication Date
GB737913A true GB737913A (en) 1955-10-05

Family

ID=10016444

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1308051A Expired GB737913A (en) 1951-06-01 1951-06-01 Improvements in or relating to high pressure mercury vapour electric discharge lamps

Country Status (2)

Country Link
FR (1) FR1057594A (en)
GB (1) GB737913A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250934A (en) * 1963-11-22 1966-05-10 Sylvania Electric Prod Electric discharge device having heat conserving shields and sleeve
US5270608A (en) * 1991-10-31 1993-12-14 Williamson Glen P Metal halide arc discharge lamp assembly
WO2000021117A1 (en) * 1998-10-02 2000-04-13 Koninklijke Philips Electronics N.V. Metal halide lamp with stem mounted support frame for arc tube shield
WO2000075958A1 (en) * 1999-06-02 2000-12-14 Koninklijke Philips Electronics N.V. Metal halide lamp with protective sleeve
WO2001024223A1 (en) * 1999-09-24 2001-04-05 Koninklijke Philips Electronics N.V. Metal halide lamp with arc tube secured to frame by clips passing through protective sleeve
WO2006035324A2 (en) * 2004-09-27 2006-04-06 Koninklijke Philips Electronics N.V. Lamp with protective sleeve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1239970A (en) * 1984-12-28 1988-08-02 Francis R. Koza Metal halide lamp with arc tube shield support
CA1305995C (en) * 1987-08-28 1992-08-04 William M. Keeffe Double-enveloped lamp having a shield surrounding a light-source capsule within a thick-walled outer envelope
US5493167A (en) * 1994-05-03 1996-02-20 General Electric Company Lamp assembly with shroud employing insulator support stops

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250934A (en) * 1963-11-22 1966-05-10 Sylvania Electric Prod Electric discharge device having heat conserving shields and sleeve
US5270608A (en) * 1991-10-31 1993-12-14 Williamson Glen P Metal halide arc discharge lamp assembly
WO2000021117A1 (en) * 1998-10-02 2000-04-13 Koninklijke Philips Electronics N.V. Metal halide lamp with stem mounted support frame for arc tube shield
WO2000075958A1 (en) * 1999-06-02 2000-12-14 Koninklijke Philips Electronics N.V. Metal halide lamp with protective sleeve
US6329742B1 (en) 1999-06-02 2001-12-11 Philips Electronics North America Corp. Metal halide lamp with metal frame supporting a protective sleeve
WO2001024223A1 (en) * 1999-09-24 2001-04-05 Koninklijke Philips Electronics N.V. Metal halide lamp with arc tube secured to frame by clips passing through protective sleeve
WO2006035324A2 (en) * 2004-09-27 2006-04-06 Koninklijke Philips Electronics N.V. Lamp with protective sleeve
WO2006035324A3 (en) * 2004-09-27 2006-07-13 Koninkl Philips Electronics Nv Lamp with protective sleeve
JP2008515142A (en) * 2004-09-27 2008-05-08 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ lamp
US7851982B2 (en) 2004-09-27 2010-12-14 Koninklijke Philips Electronics N.V. Lamp

Also Published As

Publication number Publication date
FR1057594A (en) 1954-03-09

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