FR2231107A1 - Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path - Google Patents

Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path

Info

Publication number
FR2231107A1
FR2231107A1 FR7319084A FR7319084A FR2231107A1 FR 2231107 A1 FR2231107 A1 FR 2231107A1 FR 7319084 A FR7319084 A FR 7319084A FR 7319084 A FR7319084 A FR 7319084A FR 2231107 A1 FR2231107 A1 FR 2231107A1
Authority
FR
France
Prior art keywords
auxiliary electrode
discharge path
sodium vapour
discharge lamp
vapour high
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.)
Granted
Application number
FR7319084A
Other languages
French (fr)
Other versions
FR2231107B1 (en
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.)
CENTRAL ECLAIRAGE LAB
Original Assignee
CENTRAL ECLAIRAGE LAB
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 CENTRAL ECLAIRAGE LAB filed Critical CENTRAL ECLAIRAGE LAB
Priority to FR7319084A priority Critical patent/FR2231107A1/en
Priority to DE19742424294 priority patent/DE2424294A1/en
Priority to GB2339674A priority patent/GB1477487A/en
Publication of FR2231107A1 publication Critical patent/FR2231107A1/en
Application granted granted Critical
Publication of FR2231107B1 publication Critical patent/FR2231107B1/fr
Granted 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
    • H01J61/84—Lamps with discharge constricted by high pressure

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

A sodium vapour high-pressure discharge lamp is fitted with two main discharge electrode which face each other so that the gap represents the effective discharge path during operation. An auxiliary electrode defines another shorter discharge path which is used for ignition. It is fused like the main electrodes into a sheath of not readily fusible material, pref. polycrystalline aluminium oxide. This lamp requires no external ignition device and causes no interference with wireless and TV reception.
FR7319084A 1973-05-25 1973-05-25 Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path Granted FR2231107A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7319084A FR2231107A1 (en) 1973-05-25 1973-05-25 Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path
DE19742424294 DE2424294A1 (en) 1973-05-25 1974-05-18 SODIUM VAPOR HIGH PRESSURE DISCHARGE LAMP AND METHOD OF MANUFACTURING
GB2339674A GB1477487A (en) 1973-05-25 1974-05-24 High pressure sodium-vapour discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7319084A FR2231107A1 (en) 1973-05-25 1973-05-25 Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path

Publications (2)

Publication Number Publication Date
FR2231107A1 true FR2231107A1 (en) 1974-12-20
FR2231107B1 FR2231107B1 (en) 1976-11-12

Family

ID=9120004

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7319084A Granted FR2231107A1 (en) 1973-05-25 1973-05-25 Sodium vapour high-pressure discharge lamp - having internal auxiliary electrode for short ignition discharge path

Country Status (1)

Country Link
FR (1) FR2231107A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684893C (en) * 1937-08-15 1939-12-07 Patra Patent Treuhand Electric high-pressure discharge lamp with quartz vessel and auxiliary electrodes that facilitate ignition
FR903909A (en) * 1942-08-12 1945-10-22 Licht A G Vereinigte Glu Hlamp High pressure metal vapor lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684893C (en) * 1937-08-15 1939-12-07 Patra Patent Treuhand Electric high-pressure discharge lamp with quartz vessel and auxiliary electrodes that facilitate ignition
FR903909A (en) * 1942-08-12 1945-10-22 Licht A G Vereinigte Glu Hlamp High pressure metal vapor lamp

Also Published As

Publication number Publication date
FR2231107B1 (en) 1976-11-12

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse