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GB1008339A - Improvements in high-pressure mercury discharge lamps - Google Patents

Improvements in high-pressure mercury discharge lamps

Info

Publication number
GB1008339A
GB1008339A GB16721/63A GB1672163A GB1008339A GB 1008339 A GB1008339 A GB 1008339A GB 16721/63 A GB16721/63 A GB 16721/63A GB 1672163 A GB1672163 A GB 1672163A GB 1008339 A GB1008339 A GB 1008339A
Authority
GB
United Kingdom
Prior art keywords
mercury
thallium
indium
sodium
weight
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
GB16721/63A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1008339A publication Critical patent/GB1008339A/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
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • 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
    • 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
    • H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
    • 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
    • H01J61/827—Metal halide arc lamps

Landscapes

  • Discharge Lamp (AREA)

Abstract

1,008,339. Metal-vapour lamps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 29, 1963 [May 2, 1962], No. 16721/63. Drawings to Specification. Heading H1D. A high-pressure mercury discharge lamp comprises a closed discharge vessel containing a rare gas, mercury, thallium, indium, sodium and iodine, the quantity of thallium being from 1.75 to 6.00% by weight of the quantity of mercury, the quantity of indium being from 0À10 to 2.50% by weight of the quantity of mercury, the quantity of sodium being larger than the quantity which would evaporate during normal operation of the lamp, the quantity of iodine being not less than the sum of the stoichiometric equivalents of the thallium, indium and sodium, and the quantity of iodine being less than the sum of the stoichiometric equivalents of the mercury, thallium, indium and sodium. The quantity of thallium is preferably from 3.50 to 5.50% by weight of the quantity of mercury, and the quantity of indium from 0À50 to 1.50% by weight of the quantity of mercury which is preferably between 5 and 20 mg. per cm. of arc length. The discharge vessel is mounted in an evacuated envelope containing a getter, e.g. of barium, and provided on at least one side with a thin infra-red reflecting layer of tin oxide having a resistance of between 30 and 60 ohms per square. The metal fillings may be present initially as iodides, or the iodides may be formed during operation of the lamp.
GB16721/63A 1962-05-02 1963-04-29 Improvements in high-pressure mercury discharge lamps Expired GB1008339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL277954 1962-05-02

Publications (1)

Publication Number Publication Date
GB1008339A true GB1008339A (en) 1965-10-27

Family

ID=19753797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16721/63A Expired GB1008339A (en) 1962-05-02 1963-04-29 Improvements in high-pressure mercury discharge lamps

Country Status (8)

Country Link
BE (1) BE631755A (en)
CH (1) CH424981A (en)
DE (1) DE1489406C3 (en)
DK (1) DK103575C (en)
ES (1) ES287553A1 (en)
GB (1) GB1008339A (en)
NL (2) NL137797C (en)
OA (1) OA00836A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715622A (en) * 1970-06-26 1973-02-06 Thorn Electrical Ind Ltd Metal-halide discharge lamps
EP0183248A2 (en) * 1984-11-29 1986-06-04 General Electric Company High pressure sodium iodide arc lamp with excess iodine
GB2420220A (en) * 2004-11-10 2006-05-17 Gen Electric Ceramic metal halide lamps

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3424935A (en) * 1965-04-19 1969-01-28 Sylvania Electric Prod Harness construction for metal arc type lamp
US3384775A (en) * 1965-05-06 1968-05-21 Gen Electric Mercury metal halide discharge lamp having iodine present in stoichiometric proportions with respect to the reactive metals
US3398312A (en) * 1965-11-24 1968-08-20 Westinghouse Electric Corp High pressure vapor discharge lamp having a fill including sodium iodide and a free metal
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

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715622A (en) * 1970-06-26 1973-02-06 Thorn Electrical Ind Ltd Metal-halide discharge lamps
EP0183248A2 (en) * 1984-11-29 1986-06-04 General Electric Company High pressure sodium iodide arc lamp with excess iodine
EP0183248A3 (en) * 1984-11-29 1988-10-05 General Electric Company High pressure sodium iodide arc lamp with excess iodine
GB2420220A (en) * 2004-11-10 2006-05-17 Gen Electric Ceramic metal halide lamps
US7514874B2 (en) 2004-11-10 2009-04-07 General Electric Company Ceramic metal halide lamp with specific halide dosage to mercury weight ratio
GB2420220B (en) * 2004-11-10 2009-10-14 Gen Electric Ceramic metal halide lamps

Also Published As

Publication number Publication date
OA00836A (en) 1967-11-15
NL277954A (en)
DE1489406A1 (en) 1969-03-20
DE1489406C3 (en) 1979-05-23
ES287553A1 (en) 1963-07-16
CH424981A (en) 1966-11-30
DE1489406B2 (en) 1973-07-05
DK103575C (en) 1966-01-24
NL137797C (en)
BE631755A (en)

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