GB1316803A - High intensity arc lamp - Google Patents

High intensity arc lamp

Info

Publication number
GB1316803A
GB1316803A GB1316803DA GB1316803A GB 1316803 A GB1316803 A GB 1316803A GB 1316803D A GB1316803D A GB 1316803DA GB 1316803 A GB1316803 A GB 1316803A
Authority
GB
United Kingdom
Prior art keywords
buffer
electrodes
emitter
merit
spectral bands
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
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
Original Assignee
General Electric Co
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 filed Critical General Electric Co
Publication of GB1316803A publication Critical patent/GB1316803A/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
    • H01J61/02—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
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/045—Thermic screens or reflectors
    • 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
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent

Abstract

1316803 Metal-vapour lamps GENERAL ELECTRIC CO 20 May 1970 [7 July 1969] 24504/70 Heading H1D A discharge lamp providing radiation concentrated in the blue, green and red spectral bands has a filling including an inert starting gas at a pressure of a low torr, at least one metal halide emitter providing radiation in the selected spectral bands selected from TlI, ScI 3 , CaI 2 , CsI, DyI 3 , NaI, SnI 3 , LaI 3 , LiI and BaI 2 , and at least one metal halide buffer serving to increase the energy input to the arc and augment the radiation from the emitter selected from SbI 3 , AsI 3 , BiI 3 , InI 3 , ZnI 2 , CdI 2 and PbI 2 , the buffer having a figure of merit, i.e. molecular weight x vapour pressure at 600‹ C. Î number of halogen atoms in the molecule x 10<SP>-4</SP>, greater than 1, and the emitter having a figure of merit not greater than 1 and an ionization potential less than that of the buffer. Mercury may be present as a secondary buffer. Electrodes 2, 2<SP>1</SP> each comprise a double layer tungsten helix 6 wrapped around a tungsten core wire 7 connected to a lead 3 by a molybdenum foil 4. The electrodes may be activated by thorium oxide but are preferably unactivated. Quartz heat shields 8 extending to the tips of the electrodes are packed with quartz fibres 9.
GB1316803D 1969-07-07 1970-05-20 High intensity arc lamp Expired GB1316803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86373269A 1969-07-07 1969-07-07

Publications (1)

Publication Number Publication Date
GB1316803A true GB1316803A (en) 1973-05-16

Family

ID=25341662

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1316803D Expired GB1316803A (en) 1969-07-07 1970-05-20 High intensity arc lamp

Country Status (5)

Country Link
JP (1) JPS4917471B1 (en)
BE (1) BE752890A (en)
DE (1) DE2031449C3 (en)
FR (1) FR2054299A5 (en)
GB (1) GB1316803A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057093A1 (en) * 1981-01-23 1982-08-04 North American Philips Lighting Corporation High intensity discharge lamps
GB2237927A (en) * 1989-11-08 1991-05-15 Matsushita Electric Works Ltd High intensity discharge lamp
US5256940A (en) * 1989-11-08 1993-10-26 Matsushita Electric Works, Ltd. High intensity discharge lamp device
EP0883160A1 (en) * 1997-06-06 1998-12-09 Toshiba Lighting & Technology Corporation Mercury-free metal halide discharge lamp, lighting device for such a lamp, and illuminating apparatus using such a lamp
WO2005088673A2 (en) * 2004-03-08 2005-09-22 Koninklijke Philips Electronics N.V. Vehicle headlamp
US7683549B2 (en) 2005-06-02 2010-03-23 Osram Gesellschaft Mit Beschraenkter Haftung Metal halide lamp with fill comprising lead halide
EP2959941A4 (en) * 2013-02-22 2016-03-23 Panasonic Ip Man Co Ltd Body hair luminescence aesthetic device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7203720A (en) * 1972-03-20 1973-09-24
JPS50126351U (en) * 1974-03-28 1975-10-16
DE2456757C2 (en) * 1974-11-30 1983-06-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Metal halide high pressure gas discharge lamp
GB1585861A (en) * 1976-08-18 1981-03-11 Thorn Emi Ltd Metal halide lamps
DE3044184A1 (en) * 1980-11-24 1982-06-16 Mutzhas Maximilian F DEVICE FOR PHOTOTHERAPEUTIC TREATMENT OF HYPERBILIRUBINAEMIA
US4992700A (en) * 1989-03-10 1991-02-12 General Electric Company Reprographic metal halide lamps having high blue emission
JP2970993B2 (en) * 1994-04-20 1999-11-02 ウシオ電機株式会社 Short arc metal halide lamp
DE10101508A1 (en) * 2001-01-12 2002-08-01 Philips Corp Intellectual Pty High pressure gas discharge lamp for vehicle head lamps, includes proportion of indium iodide or thallium iodide determining color coordinates of light produced
DE10307067B8 (en) * 2003-02-19 2005-01-13 Sli Lichtsysteme Gmbh Metal halide lamp

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0057093A1 (en) * 1981-01-23 1982-08-04 North American Philips Lighting Corporation High intensity discharge lamps
GB2237927A (en) * 1989-11-08 1991-05-15 Matsushita Electric Works Ltd High intensity discharge lamp
US5256940A (en) * 1989-11-08 1993-10-26 Matsushita Electric Works, Ltd. High intensity discharge lamp device
GB2237927B (en) * 1989-11-08 1994-09-21 Matsushita Electric Works Ltd High intensity discharge lamp device
US6528946B2 (en) 1997-06-06 2003-03-04 Harison Toshiba Lighting Corp. Compact-type metal halide discharge lamp
US6353289B1 (en) 1997-06-06 2002-03-05 Harison Toshiba Lighting Corp. Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp
EP0883160A1 (en) * 1997-06-06 1998-12-09 Toshiba Lighting & Technology Corporation Mercury-free metal halide discharge lamp, lighting device for such a lamp, and illuminating apparatus using such a lamp
US6873109B2 (en) 1997-06-06 2005-03-29 Harison Toshiba Lighting Corporation Metal halide discharge lamp, lighting device for metal halide discharge lamp, and illuminating apparatus using metal halide discharge lamp
US7057349B2 (en) 1997-06-06 2006-06-06 Harison Toshiba Lighting Corporation Lightening device for metal halide discharge lamp
WO2005088673A2 (en) * 2004-03-08 2005-09-22 Koninklijke Philips Electronics N.V. Vehicle headlamp
WO2005088673A3 (en) * 2004-03-08 2006-08-17 Koninkl Philips Electronics Nv Vehicle headlamp
US7683549B2 (en) 2005-06-02 2010-03-23 Osram Gesellschaft Mit Beschraenkter Haftung Metal halide lamp with fill comprising lead halide
EP2959941A4 (en) * 2013-02-22 2016-03-23 Panasonic Ip Man Co Ltd Body hair luminescence aesthetic device
US10137310B2 (en) 2013-02-22 2018-11-27 Panasonic Intellectual Property Management Co., Ltd. Body hair luminescence aesthetic device

Also Published As

Publication number Publication date
BE752890A (en) 1971-01-04
DE2031449C3 (en) 1975-07-17
DE2031449B2 (en) 1974-12-05
DE2031449A1 (en) 1971-01-28
FR2054299A5 (en) 1971-04-16
JPS4917471B1 (en) 1974-05-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees