GB1210049A - Improvements relating to discharge flash lamps - Google Patents

Improvements relating to discharge flash lamps

Info

Publication number
GB1210049A
GB1210049A GB49706/69A GB4970669A GB1210049A GB 1210049 A GB1210049 A GB 1210049A GB 49706/69 A GB49706/69 A GB 49706/69A GB 4970669 A GB4970669 A GB 4970669A GB 1210049 A GB1210049 A GB 1210049A
Authority
GB
United Kingdom
Prior art keywords
band
discharge
tube
envelope
wire
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
GB49706/69A
Inventor
John F Waymouth
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1210049A publication Critical patent/GB1210049A/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
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel

Abstract

1,210,049. Discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. 9 Oct., 1969 [9 Oct., 1968], No. 49706/69. Heading H1D. An internally triggered discharge flash lamp comprises an elongated envelope of Na containing glass having an electrode at each end of the envelope and a band of Na on the inner surface of the envelope extending between positions adjacent each electrode. The tube is Xe filled and the band is helical. To form the band a Cu wire is wound around the tube and a D.C. positive potential applied to the wire whilst a discharge is struck in the tube heated to 200‹ C. in an oven. The potential on the wire causes Na ions to migrate to the inner surface. During starting the band provides a low resistance path and concentrates the discharge in small areas of the gas. The band also provides electrons by photoelectric and ion bombardment emission and serves as a getter. The lamp is used in photography, photocopying and laser pumping.
GB49706/69A 1968-10-09 1969-10-09 Improvements relating to discharge flash lamps Expired GB1210049A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76616268A 1968-10-09 1968-10-09

Publications (1)

Publication Number Publication Date
GB1210049A true GB1210049A (en) 1970-10-28

Family

ID=25075591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49706/69A Expired GB1210049A (en) 1968-10-09 1969-10-09 Improvements relating to discharge flash lamps

Country Status (3)

Country Link
US (1) US3651365A (en)
JP (1) JPS4811638B1 (en)
GB (1) GB1210049A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2295563A2 (en) * 1974-12-16 1976-07-16 Central Eclairage Lab HIGH PRESSURE SODIUM VAPOR DISCHARGE LAMP
JPS52151553U (en) * 1976-05-12 1977-11-17
US4310773A (en) * 1979-05-16 1982-01-12 General Electric Company Glass flash tube
JPS5639564U (en) * 1979-09-05 1981-04-13
US4342940A (en) * 1980-02-04 1982-08-03 Xerox Corporation Triggering device for a flash lamp
JPH03101772U (en) * 1990-02-03 1991-10-23

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1925648A (en) * 1928-09-21 1933-09-05 Hans J Spanner Lighting device
US1961618A (en) * 1931-01-07 1934-06-05 Rainbow Light Inc Low voltage electric discharge tube
US2491854A (en) * 1946-04-06 1949-12-20 Gen Electric Starting strip for electric discharge devices
US2829295A (en) * 1949-07-02 1958-04-01 Philips Corp Internally conductively coated lamp and method of manufacture
BE545590A (en) * 1955-03-05
GB836551A (en) * 1955-08-09 1960-06-01 Gen Electric Co Ltd Improvements in or relating to electric discharge lamps
US3174919A (en) * 1962-10-31 1965-03-23 Corning Glass Works Methods for electrolyzing glass
NL6402292A (en) * 1964-03-06 1965-09-07
US3449615A (en) * 1965-03-25 1969-06-10 Us Navy Xenon flash lamp for laser pumping in liquid nitrogen

Also Published As

Publication number Publication date
JPS4811638B1 (en) 1973-04-14
US3651365A (en) 1972-03-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee