GB448685A - Improvements in or relating to mercury-vapour electric discharge tubes - Google Patents

Improvements in or relating to mercury-vapour electric discharge tubes

Info

Publication number
GB448685A
GB448685A GB6855/36A GB685536A GB448685A GB 448685 A GB448685 A GB 448685A GB 6855/36 A GB6855/36 A GB 6855/36A GB 685536 A GB685536 A GB 685536A GB 448685 A GB448685 A GB 448685A
Authority
GB
United Kingdom
Prior art keywords
mercury
vapour
pressure
relating
march
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
GB6855/36A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB448685A publication Critical patent/GB448685A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • 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
    • H01J61/822—High-pressure mercury lamps

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamp (AREA)

Abstract

448,685. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. March 6,1936, No. 6855. Convention date, March 20, 1935. Drawings to Specification. [Class 39 (i)] In high-pressure, mercury-vapour, discharge lamps such as described in Specifications 431,450, 431,451, and 431,923 wherein the vapour pressure exceeds 10 atmospheres when the lamp is in use, the electrodes have a coating of electron emissive material consisting wholly or mainly of strontium oxide. The electrodes consist of a tungsten core wire on which a thinner tungsten wire is helically wound, the emissive coating being placed thereon. In addition to mercury, the tube contains neon at a pressure of 6 cms. at ordinary temperatures. The envelope is of material and the leading-in arrangements are as described in Specification 431,923.
GB6855/36A 1935-03-21 1936-03-06 Improvements in or relating to mercury-vapour electric discharge tubes Expired GB448685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN37928A DE655233C (en) 1935-03-21 1935-03-21 Electric high-pressure mercury vapor discharge tubes with glow electrode (s), especially for emitting rays

Publications (1)

Publication Number Publication Date
GB448685A true GB448685A (en) 1936-06-12

Family

ID=25943644

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2289/36A Expired GB454348A (en) 1935-03-21 1936-01-24 Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layer
GB6855/36A Expired GB448685A (en) 1935-03-21 1936-03-06 Improvements in or relating to mercury-vapour electric discharge tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2289/36A Expired GB454348A (en) 1935-03-21 1936-01-24 Improved device comprising an electric mercury-vapour discharge tube and a red-fluorescent layer

Country Status (4)

Country Link
US (1) US2094695A (en)
DE (2) DE655233C (en)
FR (1) FR803058A (en)
GB (2) GB454348A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2682006A (en) * 1950-03-22 1954-06-22 Scopicon Inc Means for preventing external coating of water-cooled electric lamps
US20020145875A1 (en) * 2001-04-10 2002-10-10 Perkinelmer Optoelectronics N.C., Inc. Compact water-cooled multi-kilowatt lamp
US11158768B2 (en) 2004-05-07 2021-10-26 Bruce H. Baretz Vacuum light emitting diode

Also Published As

Publication number Publication date
US2094695A (en) 1937-10-05
DE655233C (en) 1938-01-12
FR803058A (en) 1936-09-22
DE667160C (en) 1938-11-05
GB454348A (en) 1936-09-29

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