US2103041A - Gaseous electric discharge lamp device - Google Patents

Gaseous electric discharge lamp device Download PDF

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Publication number
US2103041A
US2103041A US97278A US9727836A US2103041A US 2103041 A US2103041 A US 2103041A US 97278 A US97278 A US 97278A US 9727836 A US9727836 A US 9727836A US 2103041 A US2103041 A US 2103041A
Authority
US
United States
Prior art keywords
container
electrodes
appendage
discharge lamp
electric discharge
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
US97278A
Other languages
English (en)
Inventor
Rompe Robert
Thouret Wolfgang
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
Priority claimed from GB2605836A external-priority patent/GB476833A/en
Application granted granted Critical
Publication of US2103041A publication Critical patent/US2103041A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/32—Seals for leading-in conductors

Definitions

  • the containers of such devices are in the nature of capillary tubes and have an electrode comprising an electron emitting oxide material mounted at each end thereof which electrodes are separated a greater distance than the inner diameter of the tubular container.
  • the object of the present invention is to provide a vapor electric arc discharge lamp device of simple structure, capable ofoperating with a vapor pressure greater than 20 atmospheres and which has a long useful operating life.
  • Another object of the invention is to provide a vapor lamp useful as a light source in picture projecting apparatus. Still further objects and advantages attaching to the device and to its use and operation will be apparent to those skilled in the art from the following particular description.
  • the high pressure vapor lamp of the present invention comprises a spherical, or approximately spherical container of vitreous material, such as quartz, having a diameter of approximately 20 to mm.
  • the diameter of the appendage is greater than the distance between the most remote parts of the electrodes.
  • the sputtered particles of the electrode mapendage rather than on the walls of the container through which the light is transmitted.
  • the appendage is provided with a heat conservator, such as a mirror coating, to reduce the heat losses by radiation therefrom and thus to prevent the condensation of mercury vapor therein during the operation of the device.
  • the close spacing of picture projecting apparatus and makes possible the starting and operation of the lamp without the use of a high voltage transformer and on line voltages of approximately 220 v.
  • a small quantity of electron emitting oxide such as an alkaline earth oxide, is incorporated in the electrodes, but preferably the electrodes consist of tungsten.
  • FIG. 1 is a side elevational, partly sectional view of one embodiment of the invention.
  • Fig. 2 is a front elevational, partly sectional view of another embodiment of the invention.
  • a gaseous electric discharge device comprises an approximately spherical container I made of a vitreous material, such as quartz.
  • the diameter of said container I is approximately 30 mm.
  • Said container I has two solid electrodes I mounted at equal distances from the center of said container I, which electrodes 2 are separateda distance of about 3mm.
  • the electrodes 2 consist of a high melting point metal, such as tungsten, and, when desired, have a small quantity of an electron emitting material, such as an alkaline earth oxide, incorporated therein.
  • the electrodes 2 are supported by the current leads 3 which are hermetically sealed into the tubular appendages l of the.
  • Said container I has therein a'start ing gas, such as neon, at a pressure of approximately 5 mm. and a small quantity of vaporizable material 5, such as mercury, which can be device.
  • -Said container I has a domelike, protruding appendage 6 which has a diameter greater than the distance between the remote back surfaces of the electrodes 2.
  • the sputtered material from the electrodes! is carried up into the appendage 6 in the direction indicated by the dotted arrows in the drawing by the convection currents caused by the heat from the luminous arc discharge between said electrodes 2.
  • the sputtered electrode particles are deposited on the walls of the appendage 6 or if such deposition does not take place on the walls of the appendage 6 the sputtered particles fall to the bottom of the spherical container.
  • the side walls of th'e'container I. are
  • a wall 8 is interposed between the electrodes 2 and the part i of the container i, as illustrated in Fig. 2 of the drawing.
  • the wall 8 has a perforation Ill therein directly in line with the discharge path between said electrodes 2 and said wall 8 extendsfrom the appendage 6 to the bottom 9 of the spherical container I.
  • the wall 8 serves as an additional guiding and depositing surface for the sputtered particles of electrode material which are not deposited on the walls of the appendage 6. The light emitted by the arc discharge passes unobstructed through the perforation l0 and thrgugh the part I of the container I.
  • the appendage 6 is provided with a cylindrical skirt extending into the container i and terminating just above the electrodes 2.
  • the skirt has approximately the same diameter as said appendage 6.
  • This skirt serves the same purpose as the wall 8.
  • the appendage 6 is provided with 'a mirror coating l2, such as a silver coating, which radiates the heat emitted by the discharge back into the lamp to maintain the appendage 6 at a higher temperature than the condensation temperature of the mercury vapor during the operation of the device.
  • the seals 4 and seal-off tip l3 of the container I are also provided with a similar reflecting coating M or IE for the same purpose, when desired.
  • the entire container l is completely coated with a similar heat reflecting coating with the exception of a small opening in the direction in which light emission is desired.
  • a gaseous electric discharge lamp device comprising a spherical container, a gaseous atmosphere therein, electrodes and electrode leads sealed therein, said electrodes being separated a distance less than the diameter of said container and being mounted adjacent the center of said container, said electrode leads being substantially in line and being fused into opposite parts of said container, and a dome-like, protruding appendage in the wall of said container above said electrodes, the axis of said appendage being substantially normal to said electrode leads and the discharge path between said electrodes to prevent the formation of light absorbing electrically conducting deposits of sputtered electrode material at other parts of said container.
  • Agaseous electric discharge lamp device comprising a spherical container,agaseous atmosphere therein, electrodes and electrode leads sealed therein, said electrodes being separated a distance less than the diameter of said container and being mounted adjacent the center of said container, said electrode leads being substantially in line and being fused into opposite parts of said container, and a dome-like, protruding appendage in the wall of said container above said electrodes, the diameter of said appendage being greater than the distance between the remote surfaces of said electrodes, the axis of said appendage being substantially normal to said electrode leads and the discharge path between said electrodes to prevent the formation of light absorbing, electrically conducting deposits of sputtered electrode material at other parts of said container.
  • a gaseous electric discharge lamp device comprising a spherical container, a gaseous atmosphere therein, electrodes and electrode leads sealed therein, 'said electrodes being separated a distance less than the diameter of said container and being mounted adjacent the center of said container, said electrode leads being substantially in line and being fused into opposite parts of said container, 2.
  • the axis of said appendage being substantially normal to said electrode leads and the discharge path between said electrodes, the diameter of said appendage being greater than the distance between the remote surfaces of said electrodes and a cylindrical wall having the same diameter as said appendage extending from said appendage and terminating just above said electrodes, the axis of said wall and said appendage being normal to said electrode leads and the discharge path between said electrodes to prevent the formation of light absorbing, electrically conducting deposits of sputtered electrode material at other parts of said container.
  • a gaseous electric discharge lamp device comprising a spherical container, a gaseous atmosphere therein, electrodes sealed therein, said electrodes being separated a distance less than the diameter of said container and being mounted adjacent the center of said container, a dome-like protruding appendage in the wall of said container above said electrodes and a perforated wall extending from said appendage to the bottom of said container and interposed between said electrodes and the wall of said container to prevent the formation of light absorbing deposits of sputtered electrode material at other parts of said container.
  • ROBERT ROMPE ROBERT ROMPE. WOLFGANG THOURET.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
US97278A 1935-08-29 1936-08-21 Gaseous electric discharge lamp device Expired - Lifetime US2103041A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEP71723D DE646241C (de) 1935-08-29 1935-08-29 Elektrische Quecksilberdampfentladungslampe mit Edelgasgrundfuellung, deren Betriebsdampfdruck mehr als 20 Atmosphaeren betraegt
DE2135734X 1936-09-15
GB2605836A GB476833A (en) 1936-09-25 1936-09-25 Improvements in or relating to high-pressure metal-vapour electric discharge lamps
DE2135661X 1937-01-15

Publications (1)

Publication Number Publication Date
US2103041A true US2103041A (en) 1937-12-21

Family

ID=32045958

Family Applications (3)

Application Number Title Priority Date Filing Date
US97278A Expired - Lifetime US2103041A (en) 1935-08-29 1936-08-21 Gaseous electric discharge lamp device
US120066A Expired - Lifetime US2135661A (en) 1935-08-29 1937-01-11 Gaseous electric discharge device
US163700A Expired - Lifetime US2135734A (en) 1935-08-29 1937-09-13 Gaseous electric discharge device

Family Applications After (2)

Application Number Title Priority Date Filing Date
US120066A Expired - Lifetime US2135661A (en) 1935-08-29 1937-01-11 Gaseous electric discharge device
US163700A Expired - Lifetime US2135734A (en) 1935-08-29 1937-09-13 Gaseous electric discharge device

Country Status (5)

Country Link
US (3) US2103041A (enrdf_load_stackoverflow)
DE (1) DE646241C (enrdf_load_stackoverflow)
FR (2) FR810098A (enrdf_load_stackoverflow)
GB (3) GB456608A (enrdf_load_stackoverflow)
NL (1) NL48532C (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567491A (en) * 1943-12-29 1951-09-11 Mitchell John Wesley Luminous discharge tube
US2939985A (en) * 1957-10-09 1960-06-07 Philips Corp Low-pressure mercury vapour discharge tube
US3293493A (en) * 1963-09-25 1966-12-20 Gen Electric Light source for color synthesis

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875687C (de) * 1938-10-05 1953-05-04 Electricitaets Ges Sanitas M B Anordnung zum Betrieb einer Hochdruck-Quecksilberdampflampe mit Gas-Grundfuellung, durch die Entladung aufgeheizten, nicht aktivierten Gluehkathoden und langgestrecktem Lichtbogen
US2545884A (en) * 1946-01-18 1951-03-20 Gen Electric High-pressure mercury vapor electric discharge lamp
US2518944A (en) * 1948-02-13 1950-08-15 Gen Electric Electric discharge device seal
US2716713A (en) * 1950-03-22 1955-08-30 Gen Electric Cold electrode pulse lamp structure
US2707247A (en) * 1951-06-05 1955-04-26 Hanovia Chemical & Mfg Co Vapor electric discharge lamp
GB835183A (en) * 1957-05-07 1960-05-18 Philips Electrical Ind Ltd Improvements in or relating to low-pressure mercury vapour discharge tubes
US3219870A (en) * 1963-06-14 1965-11-23 Gen Electric High pressure discharge lamps seal and base
US4202999A (en) * 1978-04-11 1980-05-13 General Electric Company Fused silica lamp envelope and seal
DE2833896A1 (de) * 1978-08-02 1980-02-21 Patra Patent Treuhand Einschmelzung fuer stromzufuehrungen bei elektrischen lampen
GB2105904B (en) * 1981-09-04 1985-10-23 Emi Plc Thorn High pressure discharge lamps
US5312472A (en) * 1992-09-23 1994-05-17 Spectra-Physics Lasers, Inc. Method for manufacturing resonant cavity for laser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567491A (en) * 1943-12-29 1951-09-11 Mitchell John Wesley Luminous discharge tube
US2939985A (en) * 1957-10-09 1960-06-07 Philips Corp Low-pressure mercury vapour discharge tube
US3293493A (en) * 1963-09-25 1966-12-20 Gen Electric Light source for color synthesis

Also Published As

Publication number Publication date
GB456608A (en) 1936-11-12
GB478368A (en) 1938-01-18
US2135661A (en) 1938-11-08
GB468643A (en) 1937-07-09
DE646241C (de) 1937-06-14
FR48790E (fr) 1938-06-23
NL48532C (enrdf_load_stackoverflow) 1940-06-15
US2135734A (en) 1938-11-08
FR810098A (fr) 1937-03-15

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