GB2211658B - High pressure discharge lamp - Google Patents

High pressure discharge lamp

Info

Publication number
GB2211658B
GB2211658B GB8902971A GB8902971A GB2211658B GB 2211658 B GB2211658 B GB 2211658B GB 8902971 A GB8902971 A GB 8902971A GB 8902971 A GB8902971 A GB 8902971A GB 2211658 B GB2211658 B GB 2211658B
Authority
GB
United Kingdom
Prior art keywords
high pressure
discharge lamp
pressure discharge
lamp
pressure
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
GB8902971A
Other versions
GB8902971D0 (en
GB2211658A (en
Inventor
Shigeaki Wada
Atsunori Okada
Shoiti Morii
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of GB8902971D0 publication Critical patent/GB8902971D0/en
Publication of GB2211658A publication Critical patent/GB2211658A/en
Application granted granted Critical
Publication of GB2211658B publication Critical patent/GB2211658B/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
    • H01J61/30—Vessels; Containers
    • 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
GB8902971A 1984-12-14 1989-02-10 High pressure discharge lamp Expired GB2211658B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP59265052 1984-12-14
JP13633185 1985-06-21
JP13633085 1985-06-21

Publications (3)

Publication Number Publication Date
GB8902971D0 GB8902971D0 (en) 1989-03-30
GB2211658A GB2211658A (en) 1989-07-05
GB2211658B true GB2211658B (en) 1989-10-11

Family

ID=27317247

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8530171A Expired GB2169440B (en) 1984-12-14 1985-12-06 High pressure discharge lamp
GB8902971A Expired GB2211658B (en) 1984-12-14 1989-02-10 High pressure discharge lamp

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8530171A Expired GB2169440B (en) 1984-12-14 1985-12-06 High pressure discharge lamp

Country Status (1)

Country Link
GB (2) GB2169440B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4347022A (en) * 1978-10-02 1982-08-31 Precision Metal Fabricators, Inc. Air table system
US5101134A (en) * 1990-09-26 1992-03-31 Gte Products Corporation Low wattage metal halide capsule shape

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410787A (en) * 1931-11-21 1934-05-22 British Thomson Houston Co Ltd Improvements in and relating to electric discharge lamps

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA921541A (en) * 1970-03-03 1973-02-20 Suoh Masatake Small-sized fluorescent lamp
DE2529005C3 (en) * 1974-07-11 1979-12-06 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Low pressure gas discharge lamp
FR2298186A1 (en) * 1975-01-15 1976-08-13 Lampes Sa DISCHARGE TYPE PROTECTION LAMP
US4170746A (en) * 1977-12-27 1979-10-09 General Electric Company High frequency operation of miniature metal vapor discharge lamps
JPS56160755A (en) * 1980-05-15 1981-12-10 Ushio Inc Discharge lamp
DE3147691A1 (en) * 1980-12-08 1982-06-16 Gte Products Corp., Wilmington, Del. STARTING AID FOR DISCHARGE LAMPS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB410787A (en) * 1931-11-21 1934-05-22 British Thomson Houston Co Ltd Improvements in and relating to electric discharge lamps

Also Published As

Publication number Publication date
GB2169440A (en) 1986-07-09
GB8530171D0 (en) 1986-01-15
GB2169440B (en) 1989-08-16
GB8902971D0 (en) 1989-03-30
GB2211658A (en) 1989-07-05

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19960530

PE20 Patent expired after termination of 20 years

Effective date: 20051205