GB1527899A – Metal halide lamps
– Google Patents
GB1527899A – Metal halide lamps
– Google Patents
Metal halide lamps
Info
Publication number
GB1527899A
GB1527899A
GB46509/75A
GB4650975A
GB1527899A
GB 1527899 A
GB1527899 A
GB 1527899A
GB 46509/75 A
GB46509/75 A
GB 46509/75A
GB 4650975 A
GB4650975 A
GB 4650975A
GB 1527899 A
GB1527899 A
GB 1527899A
Authority
GB
United Kingdom
Prior art keywords
boron
lamp
metal halide
tube
nov
Prior art date
1974-11-11
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
GB46509/75A
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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.)
1974-11-11
Filing date
1975-11-11
Publication date
1978-10-11
1974-11-11
Priority claimed from JP12895574A
external-priority
patent/JPS5155180A/en
1975-06-12
Priority claimed from JP7015775A
external-priority
patent/JPS51146780A/en
1975-10-01
Priority claimed from JP11764475A
external-priority
patent/JPS5242676A/en
1975-11-11
Application filed by Tokyo Shibaura Electric Co Ltd
filed
Critical
Tokyo Shibaura Electric Co Ltd
1978-10-11
Publication of GB1527899A
publication
Critical
patent/GB1527899A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
Abstract
1527899 Gas discharge lamps TOKYO SHIBAURA ELECTRIC CO Ltd 11 Nov 1975 [11 Nov 1974 12 June 1975 1 Oct 1975] 46509/75 Heading H1D In a metal halide lamp containing a rare gas, mercury and a metal halide there is also sealed within the lamp tube elemental boron or a boron compound in an amount in the range of 0À01 to 0À43 microgram-atom per millilitre of the inner volume of the tube which serves to inhibit corrosion of the lamp electrodes by the halogen present and the blackening of the lamp tube. The boron or boron compound is not provided on the main electrodes of the lamp but may be provided on an auxiliary electrode or on a tungsten, niobium, molybdenum or tantalum wire support. Preferably the boron content of the boron compound is not more than 50 atomic per cent. The metal halide of the lamp filling is at least one selected from the group consisting of the iodides, bromides and chlorides of Sn, Na, Tl, In, Al, Dy, Sc, Sm, Cs, Ce and Tm. A number of specific examples of lamps including various quantities of WB, W 2 B 5 and W 2 B are given. Alternatively, the boron may be provided by including in the tube boron iodide, boron bromide or boron chloride in the gaseous phase.
GB46509/75A
1974-11-11
1975-11-11
Metal halide lamps
Expired
GB1527899A
(en)
Applications Claiming Priority (3)
Application Number
Priority Date
Filing Date
Title
JP12895574A
JPS5155180A
(en)
1974-11-11
1974-11-11
KINZOKUJOKIHODENTO
JP7015775A
JPS51146780A
(en)
1975-06-12
1975-06-12
Metalic vapor discharge lamp
JP11764475A
JPS5242676A
(en)
1975-10-01
1975-10-01
Discharge lamp of metal vapor
Publications (1)
Publication Number
Publication Date
GB1527899A
true
GB1527899A
(en)
1978-10-11
Family
ID=27300254
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB46509/75A
Expired
GB1527899A
(en)
1974-11-11
1975-11-11
Metal halide lamps
Country Status (5)
Country
Link
US
(1)
US4024425A
(en)
AU
(1)
AU498993B2
(en)
CA
(1)
CA1037098A
(en)
DE
(1)
DE2550661C3
(en)
GB
(1)
GB1527899A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2165392A
(en)
*
1984-10-09
1986-04-09
Gen Electric
Arc tubes
Families Citing this family (9)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4898558A
(en)
*
1988-02-09
1990-02-06
Gte Products Corporation
Getter for incandescent lamps
US4810221A
(en)
*
1988-02-09
1989-03-07
Gte Products Corporation
Method for gettering incandescent lamps
US4927398A
(en)
*
1988-02-09
1990-05-22
Gte Products Corporation
Incandescent lamps including a combined getter
US4923424A
(en)
*
1988-02-09
1990-05-08
Gte Products Corporation
Incandescent lamps including a combined getter
JPH10154485A
(en)
*
1996-11-22
1998-06-09
Stanley Electric Co Ltd
Metal halide lamp
AU745886B2
(en)
*
1999-12-20
2002-04-11
Toshiba Lighting & Technology Corporation
A high-pressure metal halide A.C. discharge lamp and a lighting apparatus using the lamp
DE60206215T2
(en)
*
2001-06-27
2006-05-04
Matsushita Electric Industrial Co., Ltd., Kadoma
Metal halide lamp
JP2003016998A
(en)
*
2001-06-28
2003-01-17
Matsushita Electric Ind Co Ltd
Metal halide lamp
US7245081B2
(en)
*
2003-03-03
2007-07-17
Osram-Melco Toshiba Lighting Ltd.
High-intensity discharge lamp with particular metal halide gas filling and lighting device
Family Cites Families (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2116689A
(en)
*
1936-03-18
1938-05-10
Gen Electric
Infrared generator
GB1257198A
(en)
*
1968-08-13
1971-12-15
US3849687A
(en)
*
1973-07-13
1974-11-19
Gte Sylvania Inc
Tungsten-halogen lamp with tantalum getter
1975
1975-11-06
US
US05/629,216
patent/US4024425A/en
not_active
Expired – Lifetime
1975-11-07
AU
AU86382/75A
patent/AU498993B2/en
not_active
Expired
1975-11-10
CA
CA239,507A
patent/CA1037098A/en
not_active
Expired
1975-11-11
DE
DE2550661A
patent/DE2550661C3/en
not_active
Expired
1975-11-11
GB
GB46509/75A
patent/GB1527899A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2165392A
(en)
*
1984-10-09
1986-04-09
Gen Electric
Arc tubes
Also Published As
Publication number
Publication date
CA1037098A
(en)
1978-08-22
DE2550661B2
(en)
1977-09-15
AU498993B2
(en)
1979-03-29
DE2550661A1
(en)
1976-05-13
US4024425A
(en)
1977-05-17
AU8638275A
(en)
1977-05-12
DE2550661C3
(en)
1978-05-18
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Legal Events
Date
Code
Title
Description
1979-01-24
PS
Patent sealed [section 19, patents act 1949]
1982-03-03
746
Register noted ‘licences of right’ (sect. 46/1977)
1995-12-13
PE20
Patent expired after termination of 20 years
Effective date:
19951110
