GB1205844A - Improvements in photochemically useful arc lamps - Google Patents

Improvements in photochemically useful arc lamps

Info

Publication number
GB1205844A
GB1205844A GB02280/68A GB1228068A GB1205844A GB 1205844 A GB1205844 A GB 1205844A GB 02280/68 A GB02280/68 A GB 02280/68A GB 1228068 A GB1228068 A GB 1228068A GB 1205844 A GB1205844 A GB 1205844A
Authority
GB
United Kingdom
Prior art keywords
vapour
mercury
halide
photochemically
envelope
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
GB02280/68A
Inventor
Peter Dexter Johnson
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
Publication of GB1205844A publication Critical patent/GB1205844A/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

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1,205,844. Metal-vapour lamps. GENERAL ELECTRIC CO. 13 March, 1968 [17 March, 1967], No. 12280/68. Heading H1D. A vapour arc photochemically useful light source comprises a U.V. transmissive envelope 3 containing a quantity 19 of mercury and a halide of Bi other than the fluoride, and a starting gas, the quantity of mercury being sufficient to cause collision line-broadening of the Bi emission, but insufficient to cause depletion of Bi halide. The mercury is totally volatilized in operation and produces a vapour pressure of ¢ to 5 atmospheres. The partial pressure of Bi halide vapour is 10 to 200 tons at a minimum wall temperature of 250‹ to 450‹ C. The starting gas may be neon, argon or other inert gas at a pressure of 15 to 25 tons. The envelope 3 is supported by a wire frame in an outer envelope 1. Both envelopes may be of quartz or yttria.
GB02280/68A 1967-03-17 1968-03-13 Improvements in photochemically useful arc lamps Expired GB1205844A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62397167A 1967-03-17 1967-03-17

Publications (1)

Publication Number Publication Date
GB1205844A true GB1205844A (en) 1970-09-16

Family

ID=24500084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB02280/68A Expired GB1205844A (en) 1967-03-17 1968-03-13 Improvements in photochemically useful arc lamps

Country Status (3)

Country Link
US (1) US3450925A (en)
DE (1) DE1639113B1 (en)
GB (1) GB1205844A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989972A (en) * 1967-10-27 1976-11-02 Westinghouse Electric Corporation High pressure mercury vapor discharge lamp containing bismuth iodide
US3590306A (en) * 1969-01-27 1971-06-29 Westinghouse Electric Corp Convective arc stabilization by lamp rotation
NL7005294A (en) * 1970-04-13 1971-10-15
US3805105A (en) * 1971-06-30 1974-04-16 Gte Sylvania Inc High pressure electric discharge device with zirconium-aluminum getter
US4813891A (en) * 1987-07-22 1989-03-21 G & H Technology, Inc. Electrical connector for diverting EMP
TWI596384B (en) * 2012-01-18 2017-08-21 Ａｓｍｌ荷蘭公司 Source-collector device, lithographic apparatus, and device manufacturing method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765416A (en) * 1953-09-24 1956-10-02 Westinghouse Electric Corp Vapor lamps utilizing chemical compounds
US3234421A (en) * 1961-01-23 1966-02-08 Gen Electric Metallic halide electric discharge lamps
DE1177248B (en) * 1962-08-22 1964-09-03 Patra Patent Treuhand Electric high pressure vapor discharge lamp with a color-correcting additional filling
FR88772E (en) * 1964-11-25 1967-06-07

Also Published As

Publication number Publication date
DE1639113B1 (en) 1970-11-26
US3450925A (en) 1969-06-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees