FR983826A - Metal vapor discharge electric lamp - Google Patents
Metal vapor discharge electric lampInfo
- Publication number
- FR983826A FR983826A FR983826DA FR983826A FR 983826 A FR983826 A FR 983826A FR 983826D A FR983826D A FR 983826DA FR 983826 A FR983826 A FR 983826A
- Authority
- FR
- France
- Prior art keywords
- metal vapor
- electric lamp
- vapor discharge
- discharge electric
- lamp
- 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
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
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- 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
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB936548A GB689962A (en) | 1948-04-02 | 1948-04-02 | Improvements in or relating to high pressure electric discharge lamps |
Publications (1)
Publication Number | Publication Date |
---|---|
FR983826A true FR983826A (en) | 1951-06-28 |
Family
ID=9870547
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR983826D Expired FR983826A (en) | 1948-04-02 | 1949-03-30 | Metal vapor discharge electric lamp |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR983826A (en) |
GB (1) | GB689962A (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2896107A (en) * | 1957-02-06 | 1959-07-21 | Engelhard Ind Inc | Gaseous electric discharge lamp |
DE1153453B (en) * | 1961-06-02 | 1963-08-29 | Patra Patent Treuhand | High pressure discharge lamp with metal halide vapor and high luminous efficiency |
US3548242A (en) * | 1967-05-16 | 1970-12-15 | Sylvania Electric Prod | High pressure electric discharge device and cathode |
US3513280A (en) * | 1967-08-11 | 1970-05-19 | Meyer Roth Pastor Maschf | Process and apparatus for welding c-shaped workpieces |
DE19714009A1 (en) * | 1997-04-04 | 1998-10-08 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | DC arc lamp |
DE19714008A1 (en) * | 1997-04-04 | 1998-10-08 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | DC arc lamp |
-
1948
- 1948-04-02 GB GB936548A patent/GB689962A/en not_active Expired
-
1949
- 1949-03-30 FR FR983826D patent/FR983826A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB689962A (en) | 1953-04-08 |
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