US2241968A - Light source - Google Patents

Light source Download PDF

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Publication number
US2241968A
US2241968A US280334A US28033439A US2241968A US 2241968 A US2241968 A US 2241968A US 280334 A US280334 A US 280334A US 28033439 A US28033439 A US 28033439A US 2241968 A US2241968 A US 2241968A
Authority
US
United States
Prior art keywords
container
envelope
discharge
electrodes
light source
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
US280334A
Other languages
English (en)
Inventor
Chauncey G Suits
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 to US280334A priority Critical patent/US2241968A/en
Priority to GB10668/40A priority patent/GB539691A/en
Priority to FR866729D priority patent/FR866729A/fr
Application granted granted Critical
Publication of US2241968A publication Critical patent/US2241968A/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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr

Definitions

  • 'I'he present invention comprises an improved light source and has for its oblect the provision of a device of the luminous discharge type which is capable of highly efficient operation.
  • Y be utilized by employing either nitrogen or argon at a pressure of from thirty to several hundred atmospheres as an operating medium for an arctype discharge in a light-transmitting container. A particular structure by which this may be done is illustrated in Fig. 1.
  • an elongated envelope I0 which is preferably constituted of a light-permeable vitreous material such as fused quai-tz. It is provided at its ends with enlarged portions il, I2 which respectively enclose aligned discharge. electrodes Il, Il.
  • Electrodes may appropriately consist ofl tungsten or an equivalent refractory metal.
  • the envelope is provided with a special tubulation I8.
  • This is preferably constituted of a metal such as a nickel, iron, cobalt alloy which can be fused directly to glass.
  • the tubulation is joined to the main body of the envelope by means of a graded glass seal whose presence is indicated by the variable cross-hatching applied at I9. I have found that a ⁇ tubulation of the character described may be sealed od by welding even u nder pressures as high as several hundred 'atmospheres.
  • having its tip in close proximity to the electrode I4.
  • a discharge device suitable for projection purposes, which comprises a heavy metallic envelope 30 which serves to confine thedischarge space.
  • This envelope is provided with an opening 3
  • the window may consist of glass or quartz and is hermetically sealed to the envelope wall by means of a flanged collar 33 having one edge thereof fused into the body of the window. The other edge of the collar 33 may be integrally fused to or welding thereto.
  • each of the plugs referred to is constituted of fusible vitreous material (e. g. glass) and is provided with a. shaft portion which extends outwardly through the envelope wall.
  • a gas-tight connection between the plug 39 and the end Wall of the envelope is l provided by means of a anged collar 43 which is sealed at its respective edges to the plug and A to the envelope.
  • a functionally similar collar 45 is provided in connection with the plug I0.
  • a clamping ring 41 which is secured to the envelope by means of bolts 48, protects the collar 45 from the shearing eiects of the pressure existing within the envelope.
  • the discharge referred to may be of high-luminous efficiency
  • argon or nitrogen at high pressure i. e. thirty to several hundred atmospheres
  • This tubulation may be peri manently connected with a source of high pressure gas or may be sealed oi after gas has once been introduced into the envelope interior. Where the tubulation is left open, it may in some cases be used advantageously to effect a temporary reduction in the gas pressure in the envelope to increase the ease of starting a discharge.
  • An auxiliary electrode is also provided for employment in this connection.
  • an external cooling jacket is provided in connection with the outer surface of the envelope 30.
  • 'I'his jacket is formed by means of a shell 52 which is somewhat spaced from the envelope so as to provide a. chamber 53 for the circulation of cooling fluid.
  • Such uid may be passed through the chamber by means of appropriate inlet and outlet connections, indicated rei I Letters Patent of the United states is:
  • a light source comprising a metallic container of relatively small cross-section in relation to its length., metallic end-walls closing the extremities of said container, and having restricted openings therein, relatively massive bodies of vitreous material within the container and abutting against the said end-walls thereof. said bodies extending over substantially the entire cross-section of the container and being hermetically joined to the container, conductors extending through said end-wall openings and sealed through said bodies of vitreous material, spaced electrodes respectively supported by said conductors, an operating atmosphere for the electrod comprising a light-producing gas at a pressure in excess of about thirty atmospheres, and a. light-permeable window provided in the lateral wall of the container in position to permit passage therethrough of light generated by a discharge between said electrodes.
  • a light source comprising a metallic container of relatively small cross-section in relation to its length, electrodes within said container, metallic end-walls closing the extremities of said container, at least one of said end-walls having a restricted opening therein, a relatively massive body of -vitreous material within the container and abutting against the said one of said end-walls, said body extending over a substantial portion of the entire cross-section of the container and having metallic means peripherally sealed thereto for hermetcally joining the body to the Wall of the container, a conductor extending through said end-wall Aopening and sealed through said body of vitreous material, said container being connected to one of said electrodes, an operating atmosphere within the container comprising a light-produing gas at a pressure in excess of abou't thirty atmospheres, and a light-permeable window provided in the lateral wall of the container in position to permit passagev therethrough of light generated by a discharge between said electrodes.
  • a light source comprising a metallic container of relatively small cross-section in relation to its length, electrodes within said container, metallic end-walls closing the extremities of said container, at least one of said endwalls having an opening therein, .a body of vitreous material within 'the container and abutting against the said one of said end-walls, an annular collar having an inner edge thereof ernbedded in said body and hermetically joined at its other edge to the wall of the container, a conductor extending through said end-wall opening and sealed through said body of vitreous material, said conductor being connected with one of said electrodes, an operating atmosphere within the container comprising a light-producing gas at a high pressure, and a light-permeable window provided in the wall of the container in position to permit passage therethrough of light generated by a discharge between said electrodes.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)
US280334A 1939-06-21 1939-06-21 Light source Expired - Lifetime US2241968A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US280334A US2241968A (en) 1939-06-21 1939-06-21 Light source
GB10668/40A GB539691A (en) 1939-06-21 1940-06-21 Improvements in and relating to electric discharge devices
FR866729D FR866729A (fr) 1939-06-21 1940-08-12 Nouvelles lampes à décharge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US280334A US2241968A (en) 1939-06-21 1939-06-21 Light source

Publications (1)

Publication Number Publication Date
US2241968A true US2241968A (en) 1941-05-13

Family

ID=23072641

Family Applications (1)

Application Number Title Priority Date Filing Date
US280334A Expired - Lifetime US2241968A (en) 1939-06-21 1939-06-21 Light source

Country Status (3)

Country Link
US (1) US2241968A (fr)
FR (1) FR866729A (fr)
GB (1) GB539691A (fr)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2432051A (en) * 1944-05-19 1947-12-02 Vang Alfred Mercury tube and circuit therefor
US2456854A (en) * 1943-06-19 1948-12-21 Westinghouse Electric Corp High-pressure modulator tube
US2625671A (en) * 1949-07-19 1953-01-13 Krefft Hermann Eduard Electrical discharge lamp
US2654043A (en) * 1948-02-27 1953-09-29 Westinghouse Electric Corp Discharge lamp, method of operating, and method of making
US2675496A (en) * 1949-08-31 1954-04-13 Westinghouse Electric Corp High-pressure discharge lamp and seal therefor
US2727187A (en) * 1950-03-03 1955-12-13 Gen Electric Electric discharge lamp
US2728877A (en) * 1951-06-19 1955-12-27 Heinz F Fischer Apparatus for obtaining extremely high temperatures
US2774013A (en) * 1949-04-07 1956-12-11 Gen Electric Electric discharge lamp
US2900552A (en) * 1955-05-19 1959-08-18 Willis A Pennow Gaseous electric discharge lamp
US2974249A (en) * 1958-01-28 1961-03-07 Duro Test Corp Xenon short arc lamps
US2985787A (en) * 1958-11-19 1961-05-23 British Thomson Houston Co Ltd Electric discharge lamps
US3067357A (en) * 1960-09-21 1962-12-04 Gen Electric Electric discharge lamp electrode
US3304457A (en) * 1961-09-21 1967-02-14 Trw Inc High intensity light source
US3515935A (en) * 1967-05-31 1970-06-02 Us Navy Triggered spark transmitter device
US3581140A (en) * 1968-06-11 1971-05-25 Varo High intensity light source with integral radiant-energy-coupling apparatus
US3727525A (en) * 1968-06-29 1973-04-17 O Takeuchi Device for making phosphor screen for color picture tubes
US3729643A (en) * 1970-04-03 1973-04-24 Matsushita Electronics Corp Mercury vapor discharge lamp with radiation plane in envelope
US3780328A (en) * 1971-12-30 1973-12-18 Electronic Control & Surveilla Lighting unit for use underwater and in wet environment
US4612582A (en) * 1983-06-03 1986-09-16 Electronic Systems Products Inc. Liquid cooled cathode ray tube assembly for video image projection systems
US4770310A (en) * 1983-07-05 1988-09-13 Futaba Denshi Kogyo K.K. Casing for display device
US4877991A (en) * 1987-12-21 1989-10-31 Colterjohn Jr Walter L Optical radiation source
EP4174909A4 (fr) * 2020-12-21 2024-10-16 Hamamatsu Photonics K K Enceinte émettant de la lumière et dispositif source de lumière

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2456854A (en) * 1943-06-19 1948-12-21 Westinghouse Electric Corp High-pressure modulator tube
US2432051A (en) * 1944-05-19 1947-12-02 Vang Alfred Mercury tube and circuit therefor
US2654043A (en) * 1948-02-27 1953-09-29 Westinghouse Electric Corp Discharge lamp, method of operating, and method of making
US2774013A (en) * 1949-04-07 1956-12-11 Gen Electric Electric discharge lamp
US2625671A (en) * 1949-07-19 1953-01-13 Krefft Hermann Eduard Electrical discharge lamp
US2675496A (en) * 1949-08-31 1954-04-13 Westinghouse Electric Corp High-pressure discharge lamp and seal therefor
US2727187A (en) * 1950-03-03 1955-12-13 Gen Electric Electric discharge lamp
US2728877A (en) * 1951-06-19 1955-12-27 Heinz F Fischer Apparatus for obtaining extremely high temperatures
US2900552A (en) * 1955-05-19 1959-08-18 Willis A Pennow Gaseous electric discharge lamp
US2974249A (en) * 1958-01-28 1961-03-07 Duro Test Corp Xenon short arc lamps
US2985787A (en) * 1958-11-19 1961-05-23 British Thomson Houston Co Ltd Electric discharge lamps
US3067357A (en) * 1960-09-21 1962-12-04 Gen Electric Electric discharge lamp electrode
US3304457A (en) * 1961-09-21 1967-02-14 Trw Inc High intensity light source
US3515935A (en) * 1967-05-31 1970-06-02 Us Navy Triggered spark transmitter device
US3581140A (en) * 1968-06-11 1971-05-25 Varo High intensity light source with integral radiant-energy-coupling apparatus
US3727525A (en) * 1968-06-29 1973-04-17 O Takeuchi Device for making phosphor screen for color picture tubes
US3729643A (en) * 1970-04-03 1973-04-24 Matsushita Electronics Corp Mercury vapor discharge lamp with radiation plane in envelope
US3780328A (en) * 1971-12-30 1973-12-18 Electronic Control & Surveilla Lighting unit for use underwater and in wet environment
US4612582A (en) * 1983-06-03 1986-09-16 Electronic Systems Products Inc. Liquid cooled cathode ray tube assembly for video image projection systems
US4770310A (en) * 1983-07-05 1988-09-13 Futaba Denshi Kogyo K.K. Casing for display device
US4877991A (en) * 1987-12-21 1989-10-31 Colterjohn Jr Walter L Optical radiation source
EP4174909A4 (fr) * 2020-12-21 2024-10-16 Hamamatsu Photonics K K Enceinte émettant de la lumière et dispositif source de lumière

Also Published As

Publication number Publication date
FR866729A (fr) 1941-08-30
GB539691A (en) 1941-09-19

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