GB1283152A - Metal halide discharge lamp - Google Patents

Metal halide discharge lamp

Info

Publication number
GB1283152A
GB1283152A GB1726170A GB1726170A GB1283152A GB 1283152 A GB1283152 A GB 1283152A GB 1726170 A GB1726170 A GB 1726170A GB 1726170 A GB1726170 A GB 1726170A GB 1283152 A GB1283152 A GB 1283152A
Authority
GB
United Kingdom
Prior art keywords
lamp
sni
sncl
combines
metal
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
GB1726170A
Inventor
Dimitrios Mandamadiotis Speros
Robert Macgregor Caldwell
William Edward Smyser
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 GB1283152A publication Critical patent/GB1283152A/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
    • H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent

Landscapes

  • Discharge Lamp (AREA)

Abstract

1283152 Metal-halide lamps GENERAL ELECTRIC CO 10 April 1970 [19 May 1969] 17261/70 Heading HiD The filling of a metal-halide lamp contains an inert gas e.g. 25 torr of argon, SnCl 2 , Sn and/or SnI 2 , such that the reactivity of free chlorine produced in the discharge is reduced by an excess concentration of tin. Excess tin getters free Cl 2 and 0 2 which are present and also combines with the C1 2 released by dissociation of the SnCl 2 . SnI 2 combines with C1 2 to release less reactive I 2 and aids regeneration of tungsten electrodes. The lamp envelope 2 is of fused silica and the tungsten electrodes 5, 6 are welded to molybdenum leads 9, 10. The spectral emission of the lamp is stated to be similar to that of a black body at 5500‹ K.
GB1726170A 1969-05-19 1970-04-10 Metal halide discharge lamp Expired GB1283152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82572269A 1969-05-19 1969-05-19

Publications (1)

Publication Number Publication Date
GB1283152A true GB1283152A (en) 1972-07-26

Family

ID=25244758

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1726170A Expired GB1283152A (en) 1969-05-19 1970-04-10 Metal halide discharge lamp

Country Status (5)

Country Link
JP (1) JPS5432272B1 (en)
BE (1) BE750473A (en)
DE (1) DE2023770C3 (en)
FR (1) FR2047428A5 (en)
GB (1) GB1283152A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004049386A2 (en) * 2002-11-26 2004-06-10 Philips Intellectual Property & Standards Gmbh High-pressure discharge lamp with mercury chloride having a limited chlorine content

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7316101A (en) * 1973-11-26 1975-05-28 Philips Nv HIGH PRESSURE TINHALOGENIDE DISCHARGE LAMP.
DE2456757C2 (en) * 1974-11-30 1983-06-01 Philips Patentverwaltung Gmbh, 2000 Hamburg Metal halide high pressure gas discharge lamp
US4360756A (en) * 1979-11-13 1982-11-23 General Electric Company Metal halide lamp containing ThI4 with added elemental cadmium or zinc
KR20010037340A (en) 1999-10-15 2001-05-07 구자홍 AN ELECTRODELESS LAMP INCLUDING SnI2

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004049386A2 (en) * 2002-11-26 2004-06-10 Philips Intellectual Property & Standards Gmbh High-pressure discharge lamp with mercury chloride having a limited chlorine content
WO2004049386A3 (en) * 2002-11-26 2004-09-30 Philips Intellectual Property High-pressure discharge lamp with mercury chloride having a limited chlorine content
US7282862B2 (en) 2002-11-26 2007-10-16 Koninklijke Philips Electronics, N.V. High-pressure discharge lamp with mercury chloride having a limited chlorine content

Also Published As

Publication number Publication date
FR2047428A5 (en) 1971-03-12
BE750473A (en) 1970-11-16
DE2023770A1 (en) 1970-12-10
DE2023770C3 (en) 1974-10-03
DE2023770B2 (en) 1974-03-14
JPS5432272B1 (en) 1979-10-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees