CA2017818A1 - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
CA2017818A1
CA2017818A1 CA2017818A CA2017818A CA2017818A1 CA 2017818 A1 CA2017818 A1 CA 2017818A1 CA 2017818 A CA2017818 A CA 2017818A CA 2017818 A CA2017818 A CA 2017818A CA 2017818 A1 CA2017818 A1 CA 2017818A1
Authority
CA
Canada
Prior art keywords
halides
halide lamp
metal halide
luminous tube
see
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.)
Granted
Application number
CA2017818A
Other languages
French (fr)
Other versions
CA2017818C (en
Inventor
Masao Niijima
Akira Urushihara
Shinya Suzuki
Kazushi Tominaga
Kyoichi Maseki
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.)
Iwasaki Denki KK
Original Assignee
Iwasaki Denki KK
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 Iwasaki Denki KK filed Critical Iwasaki Denki KK
Publication of CA2017818A1 publication Critical patent/CA2017818A1/en
Application granted granted Critical
Publication of CA2017818C publication Critical patent/CA2017818C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • 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
    • H01J61/827—Metal halide arc lamps

Abstract

A metal halide lamp of the present invention comprises a luminous tube alone without any outer bulb, the luminous tube containing metal halides such as neodymium halides (NdX3), dysprosium halides (DyX3) and cesium halides (CsX) in a total amount by mole of 1 x 10-6 to 8 x 10-6 mol/cc and the following molar ratios:

(see fig.I) (see fig.II) as well as rare gas serving as starting auxiliary gas and mercury serving as buffer gas. This structure permits a predetermined vapor pressure of the metal halides sealed in the luminous tube to be obtained without increasing the wall load, as well as the formation of a metal halide lamp having a long life and good color characteristics.
CA002017818A 1989-05-31 1990-05-30 Metal halide lamp Expired - Fee Related CA2017818C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP13595089 1989-05-31
JP135950/1989 1989-05-31
JP307490/1989 1989-11-29
JP30749089 1989-11-29

Publications (2)

Publication Number Publication Date
CA2017818A1 true CA2017818A1 (en) 1990-11-30
CA2017818C CA2017818C (en) 1998-02-24

Family

ID=26469672

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002017818A Expired - Fee Related CA2017818C (en) 1989-05-31 1990-05-30 Metal halide lamp

Country Status (5)

Country Link
US (1) US5220244A (en)
EP (1) EP0400980B1 (en)
JP (1) JP2650463B2 (en)
CA (1) CA2017818C (en)
DE (1) DE69015700T2 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013039A1 (en) * 1990-04-24 1991-10-31 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP
CA2090360A1 (en) * 1992-03-03 1993-09-04 Michael J. Shea Metal iodide lamp
DE4310539A1 (en) * 1993-03-31 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Metal halide high-pressure discharge lamp for installation in optical systems
EP0634780B1 (en) * 1993-07-13 1997-01-08 Matsushita Electric Industrial Co., Ltd. Metal halide discharge lamp, illumination optical apparatus, and image display system
DE69514710T2 (en) * 1994-05-12 2000-09-28 Iwasaki Electric Co Ltd Metal halide lamp
US5594302A (en) * 1995-08-22 1997-01-14 Lamptech Ltd. Metal halide lamp including iron and molybdenum
US5831388A (en) * 1995-08-23 1998-11-03 Patent-Truehand-Gesellschaftfuer Elektrische Gluelampen Mbh Rare earth metal halide lamp including niobium
TW339447B (en) * 1995-10-20 1998-09-01 Matsushita Electric Ind Co Ltd Metal halide lamp
JP3201278B2 (en) * 1996-08-28 2001-08-20 ウシオ電機株式会社 Metal halide lamp
JPH1083798A (en) 1996-09-06 1998-03-31 Matsushita Electric Ind Co Ltd Metal halide lamp
US20060255741A1 (en) * 1997-06-06 2006-11-16 Harison Toshiba Lighting Corporation Lightening device for metal halide discharge lamp
CN1235260C (en) * 2001-03-30 2006-01-04 松下电器产业株式会社 Metal halide lamp for car headlight
EP1525606A2 (en) * 2002-07-17 2005-04-27 Koninklijke Philips Electronics N.V. Metal halide lamp
US6812644B2 (en) * 2003-02-04 2004-11-02 Osram Sylvania Inc. Reduced mercury ceramic metal halide lamp
DE102004024063A1 (en) * 2004-05-13 2005-12-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH High pressure discharge lamp
US7486026B2 (en) * 2006-11-09 2009-02-03 General Electric Company Discharge lamp with high color temperature
WO2008129466A2 (en) * 2007-04-20 2008-10-30 Koninklijke Philips Electronics N.V. Metal halide lamp comprising a shaped ceramic discharge vessel
US7893619B2 (en) * 2008-07-25 2011-02-22 General Electric Company High intensity discharge lamp

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319119A (en) * 1965-10-22 1967-05-09 Hewlett Packard Co Metal vapor spectral lamp with mercury and a metal halide at subatmospheric pressure
US3334261A (en) * 1965-10-24 1967-08-01 Sylvania Electric Prod High pressure discharge device having a fill including iodine mercury and at least one rare earth metal
BE754499A (en) * 1969-08-08 1971-01-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HIGH PRESSURE DISCHARGE LAMP, MERCURY VAPOR WITH METAL HALOGENIDE ADDITIVE
US3786297A (en) * 1972-04-13 1974-01-15 Westinghouse Electric Corp Discharge lamp which incorporates cerium and cesium halides and a high mercury loading
US3798487A (en) * 1972-07-21 1974-03-19 Westinghouse Electric Corp Discharge lamp which incorporates divalent cerium halide and cesium halide and a high mercury loading
JPS5228233B2 (en) * 1972-08-30 1977-07-25
DE2655167C2 (en) * 1976-12-06 1986-12-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München High pressure discharge lamp with metal halides
US4161672A (en) * 1977-07-05 1979-07-17 General Electric Company High pressure metal vapor discharge lamps of improved efficacy
JPS5422973A (en) * 1977-07-22 1979-02-21 Iwasaki Electric Co Ltd Metal vapor discharge lamp
JPS5426081A (en) * 1977-07-30 1979-02-27 Iwasaki Electric Co Ltd Self-ballast discharge lamp
US4206387A (en) * 1978-09-11 1980-06-03 Gte Laboratories Incorporated Electrodeless light source having rare earth molecular continua
JPS5963653A (en) * 1982-10-04 1984-04-11 Toshiba Corp Short-arc metal halide lamp
US4801846A (en) * 1986-12-19 1989-01-31 Gte Laboratories Incorporated Rare earth halide light source with enhanced red emission
GB8707670D0 (en) * 1987-03-31 1987-05-07 Emi Plc Thorn Ceramic metal halide lamps
US4935668A (en) * 1988-02-18 1990-06-19 General Electric Company Metal halide lamp having vacuum shroud for improved performance
US4978884A (en) * 1988-05-19 1990-12-18 U.S. Phillips Corporation Metal halide discharge lamp having low color temperature and improved color rendition
US5101134A (en) * 1990-09-26 1992-03-31 Gte Products Corporation Low wattage metal halide capsule shape

Also Published As

Publication number Publication date
JPH03219546A (en) 1991-09-26
JP2650463B2 (en) 1997-09-03
US5220244A (en) 1993-06-15
EP0400980A2 (en) 1990-12-05
DE69015700D1 (en) 1995-02-16
CA2017818C (en) 1998-02-24
DE69015700T2 (en) 1995-05-11
EP0400980A3 (en) 1991-07-31
EP0400980B1 (en) 1995-01-04

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed