US3379916A - High-pressure vapour lamp containing indium, thallium and gallium halides - Google Patents

High-pressure vapour lamp containing indium, thallium and gallium halides Download PDF

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Publication number
US3379916A
US3379916A US494547A US49454765A US3379916A US 3379916 A US3379916 A US 3379916A US 494547 A US494547 A US 494547A US 49454765 A US49454765 A US 49454765A US 3379916 A US3379916 A US 3379916A
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US
United States
Prior art keywords
thallium
lamp
tube
halides
indium
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 - Lifetime
Application number
US494547A
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English (en)
Inventor
Delrieu Pierre
Taxil Andre
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.)
Claude Paz et Visseaux SA
Original Assignee
Claude Paz et Visseaux SA
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.)
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Publication date
Application filed by Claude Paz et Visseaux SA filed Critical Claude Paz et Visseaux SA
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Publication of US3379916A publication Critical patent/US3379916A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/82Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827Metal halide arc lamps
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/04Electrodes; Screens; Shields
    • H01J61/045Thermic screens or reflectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/12Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/12Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/18Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/38Devices for influencing the colour or wavelength of the light
    • H01J61/40Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00Gas-discharge or vapour-discharge lamps
    • H01J61/02Details
    • H01J61/38Devices for influencing the colour or wavelength of the light
    • H01J61/42Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
    • H01J61/44Devices characterised by the luminescent material

Definitions

  • the proportions of these substances in the gas of the discharge atmosphere under normal running or operating conditions may vary appreciably because of the variation of the cold point temperature due to variations in external conditions such as those of the line voltage and of the ambient temperature.
  • This temperature characteristic is found to vary from one lamp to another of the same manufacture, lbecause of small but inevitable deviations in their dimensions. It is also found to vary for the same lamp, depending on the supply voltage and the supply apparatus.
  • the spectral distribution of the radiation can be caused to vary, for example, in order to favour either the obtaining of blue light, or the obtaining of green light, or the obtaining of red and violet light, respectively by increasing the proportions of indium iodide, thallium iodide and gallium iodide.
  • the discharge vessel is advantageously equipped with tungsten electrodes comprising an addition of thorium in metallic form as an element which easily emits electrons.
  • This thorium may in addition contribute to the light emission by production of thorium iodide from iodide in excess, coming from the triiodide.
  • gallium iodide emitting red light of Wavelengths 6414 and 6397 A.
  • These violet radiations which are less efficient from the point of view of light production, can advantageously be employed for exciting a tluorescent material deposited in a bulb containing the mercury and iodides vapour tube.
  • This fluorescent material which must have good eiciency at the high temperature of the bulb, will for example be magnesium uorogermanate emitting red light or preferably strontium and optionally zinc orthophosphate activated with tin, an emitter of orange and yellow radiation and contributing to the balance of the light in the different parts of the spectrum.
  • FIGURES 1 and 2 show diagrammatically and by Way of example two lamps according to the invention.
  • the silica tube 1 is mounted axially in a cylindrical envelope 6 of hard glass in known manner by means of a metal support.
  • heat-insulating elements 4, 14 which are formed by a metal strip of polished nickel insulated from the end of the lamp by a thermal insulator, such as for example silica wool. This permits the heat losses through the ends of the tube to be greatly reduced, especially when these latter comprise flat pinched portions with a large area. In this way, a suciently high temperature, of the order of 600 C., is maintained at the cold point of the tube, thus avoiding the possible condensation of the products being used and permits a more rapid warming-up.
  • the bulbs 6 and 8 may be advantageous to form the bulbs 6 and 8 of slightly yellow glass or to deposit inside these bulbs a layer which is formed wholly or in part by a yellow pigment; in this way, a light is obtained which has a more accentuated component in the long wave lengths.
  • the lamps according to the invention have the above advantages, as well as a high e'iciency, without it being necessary to dissipate therefrom a high power, relatively to their dimensions; there are thus avoided the disadvantages of a high temperature due to a high load: rapid devitrification of the silica forming the wall of the tube, rapid destruction of the tube, more rapid physical and chemical phenomena and probably opaque metals deposition on the wall of the tube may be with a surface attack of the silica.

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  • Discharge Lamp (AREA)
US494547A 1964-11-25 1965-10-11 High-pressure vapour lamp containing indium, thallium and gallium halides Expired - Lifetime US3379916A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR996238A FR1423911A (fr) 1964-11-25 1964-11-25 Lampe à vapeur de mercure sous haute pression
FR32083 1965-09-21

Publications (1)

Publication Number Publication Date
US3379916A true US3379916A (en) 1968-04-23

Family

ID=26166251

Family Applications (1)

Application Number Title Priority Date Filing Date
US494547A Expired - Lifetime US3379916A (en) 1964-11-25 1965-10-11 High-pressure vapour lamp containing indium, thallium and gallium halides

Country Status (6)

Country Link
US (1) US3379916A (enrdf_load_stackoverflow)
BE (1) BE671014A (enrdf_load_stackoverflow)
CH (1) CH452698A (enrdf_load_stackoverflow)
DE (1) DE1489527B2 (enrdf_load_stackoverflow)
FR (2) FR1423911A (enrdf_load_stackoverflow)
GB (1) GB1060350A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450925A (en) * 1967-03-17 1969-06-17 Gen Electric Mercury bismuth halide photochemical arc lamp light sources
US3521111A (en) * 1965-10-01 1970-07-21 Mitsubishi Electric Corp Discharge lamp having a fill including mercury and gallium iodide
US3555338A (en) * 1967-03-10 1971-01-12 Sylvania Electric Prod Incandescent lamp
US3662203A (en) * 1969-05-20 1972-05-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure saturated metal vapor, preferably sodium or metal halide vapor discharge lamp
US4499396A (en) * 1982-08-18 1985-02-12 Gte Products Corporation Metal halide arc discharge lamp with means for suppressing convection currents within the outer envelope and methods of operating same
US4580989A (en) * 1982-08-18 1986-04-08 Gte Products Corporation Metal halide arc discharge lamp with means for suppressing convection currents within the outer envelope and methods of operating and constructing same
US4581557A (en) * 1979-01-02 1986-04-08 General Electric Company Stabilized high intensity discharge lamp
JPH04506317A (ja) * 1990-08-13 1992-11-05 ウエルチ アリン,インコーポレイテッド 歯科用材料硬化用の電灯および装置
WO2002103748A1 (en) * 2001-06-19 2002-12-27 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp with a mercury-free gas filling

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2115977A (en) * 1982-03-01 1983-09-14 Gen Electric High efficacy fluorescent/arc discharge light source
CA1316666C (en) * 1987-10-22 1993-04-27 Robert E. Duthie, Jr. Sterilization method and apparatus
US5864210A (en) * 1995-08-24 1999-01-26 Matsushita Electric Industrial Co., Ltd. Electrodeless hid lamp and electrodeless hid lamp system using the same
US7161303B2 (en) * 2003-09-08 2007-01-09 Lg Electronics, Inc. Plasma lighting system and bulb therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234421A (en) * 1961-01-23 1966-02-08 Gen Electric Metallic halide electric discharge lamps
US3259777A (en) * 1961-05-09 1966-07-05 Gen Electric Metal halide vapor discharge lamp with near molten tip electrodes
US3274415A (en) * 1963-12-31 1966-09-20 Sylvania Electric Prod Gaseous discharge lamp with a reduced and unreduced actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3234421A (en) * 1961-01-23 1966-02-08 Gen Electric Metallic halide electric discharge lamps
US3259777A (en) * 1961-05-09 1966-07-05 Gen Electric Metal halide vapor discharge lamp with near molten tip electrodes
US3274415A (en) * 1963-12-31 1966-09-20 Sylvania Electric Prod Gaseous discharge lamp with a reduced and unreduced actuator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521111A (en) * 1965-10-01 1970-07-21 Mitsubishi Electric Corp Discharge lamp having a fill including mercury and gallium iodide
US3555338A (en) * 1967-03-10 1971-01-12 Sylvania Electric Prod Incandescent lamp
US3450925A (en) * 1967-03-17 1969-06-17 Gen Electric Mercury bismuth halide photochemical arc lamp light sources
US3662203A (en) * 1969-05-20 1972-05-09 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure saturated metal vapor, preferably sodium or metal halide vapor discharge lamp
US4581557A (en) * 1979-01-02 1986-04-08 General Electric Company Stabilized high intensity discharge lamp
US4499396A (en) * 1982-08-18 1985-02-12 Gte Products Corporation Metal halide arc discharge lamp with means for suppressing convection currents within the outer envelope and methods of operating same
US4580989A (en) * 1982-08-18 1986-04-08 Gte Products Corporation Metal halide arc discharge lamp with means for suppressing convection currents within the outer envelope and methods of operating and constructing same
JPH04506317A (ja) * 1990-08-13 1992-11-05 ウエルチ アリン,インコーポレイテッド 歯科用材料硬化用の電灯および装置
US5184044A (en) * 1990-08-13 1993-02-02 Welch Allyn, Inc. Dental curing lamp
WO2002103748A1 (en) * 2001-06-19 2002-12-27 Koninklijke Philips Electronics N.V. Low-pressure gas discharge lamp with a mercury-free gas filling

Also Published As

Publication number Publication date
BE671014A (enrdf_load_stackoverflow) 1966-04-15
GB1060350A (en) 1967-03-01
FR1423911A (fr) 1966-01-07
DE1489527A1 (de) 1970-07-23
CH452698A (fr) 1968-03-15
DE1489527B2 (de) 1976-08-19
FR88772E (enrdf_load_stackoverflow) 1967-06-07

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