GB821321A - Resonance radiation discharge lamps - Google Patents
Resonance radiation discharge lampsInfo
- Publication number
- GB821321A GB821321A GB35774/55A GB3577455A GB821321A GB 821321 A GB821321 A GB 821321A GB 35774/55 A GB35774/55 A GB 35774/55A GB 3577455 A GB3577455 A GB 3577455A GB 821321 A GB821321 A GB 821321A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- wall portion
- length
- section
- cross
- 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
- H01J61/30—Vessels; Containers
- H01J61/33—Special shape of cross-section, e.g. for producing cool spot
-
- 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
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour
-
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
821,321. Discharge lamps. GENERAL ELECTRIC CO. Dec. 13, 1955 [Dec. 14, 1954], No. 35774/55. Class 39(1). [Also in Group XXIII] A discharge lamp, particularly a lowpressure fluorescent lamp, having a filling of mercury and argon at a pressure of 2-5 mms., has an envelope 22 so shaped that it has circular sections 3 and one or more sections 23, 24 each having an outwardly open deep transversely re-entrant groove extending longitudinally of the envelope so as to provide a kidney-shaped cross-section, Fig. 5, in which the wall portion 17 forming the groove is spaced substantially uniformly from the opposite arcuate wall portion 16, and is joined thereto by curved wall portions 18 having a radius of curvature approximately one-half the distance between the opposite wall portions, and in which the length of the periphery of the envelope cross-section measured along the inner wall portion 17 is of the order of one-half that of the outer wall portion 16. The inner and outer wall portions 17, 16 can be partcylindrical. The re-entrant groove can be so shaped that the ratio of circumference to area of cross-section of the envelope as that of a round tube flattened so that the length of cross-section is three times the width. The envelope can have one re-entrant groove which extends substantially the length of the envelope or can have a plurality of longitudinally spaced grooves with a length comparable to the maximum diameter of the envelope and up to three times that diameter and curved both longitudinally and transversely of the envelope. The grooves can be arranged in staggered positions on opposite sides of the envelope. The envelope can be coated exteriorly with a water-repellent substance to facilitate starting. Methods of making the envelope are described.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US341906XA | 1954-12-14 | 1954-12-14 | |
| US856912XA | 1956-04-09 | 1956-04-09 | |
| US857711XA | 1956-04-19 | 1956-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB821321A true GB821321A (en) | 1959-10-07 |
Family
ID=27364591
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34975/55A Expired GB802877A (en) | 1954-12-14 | 1955-12-06 | Improvements in low pressure discharge lamps |
| GB35774/55A Expired GB821321A (en) | 1954-12-14 | 1955-12-13 | Resonance radiation discharge lamps |
| GB9999/57A Expired GB856912A (en) | 1954-12-14 | 1957-03-27 | Improvements in or relating to tubular electric resonance radiation discharge lamps |
| GB10932/57A Expired GB857711A (en) | 1954-12-14 | 1957-04-03 | Improvements in or relating to discharge lamp envelopes |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34975/55A Expired GB802877A (en) | 1954-12-14 | 1955-12-06 | Improvements in low pressure discharge lamps |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9999/57A Expired GB856912A (en) | 1954-12-14 | 1957-03-27 | Improvements in or relating to tubular electric resonance radiation discharge lamps |
| GB10932/57A Expired GB857711A (en) | 1954-12-14 | 1957-04-03 | Improvements in or relating to discharge lamp envelopes |
Country Status (6)
| Country | Link |
|---|---|
| BE (3) | BE543614A (en) |
| CH (4) | CH341907A (en) |
| DE (4) | DE1051398B (en) |
| FR (4) | FR1162139A (en) |
| GB (4) | GB802877A (en) |
| NL (6) | NL202746A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL238268A (en) * | 1958-04-18 | |||
| DE1153833B (en) * | 1958-12-17 | 1963-09-05 | Gen Electric Co Ltd | Electric sodium vapor discharge lamp |
| US4884007A (en) * | 1984-12-06 | 1989-11-28 | Gte Products Corporation | Low pressure arc discharge tube having increased voltage |
| JPS61135041A (en) * | 1984-12-06 | 1986-06-23 | ジー・テイー・イー・プロダクツ・コーポレイシヨン | Low pressure arc discharge lamp with increased voltage |
| CN100380568C (en) | 2002-04-11 | 2008-04-09 | 皇家飞利浦电子股份有限公司 | Low-pressure mercury vapor discharge lamp |
| AU2003216631A1 (en) * | 2002-04-11 | 2003-10-20 | Koninklijke Philips Electronics N.V. | Low-pressure mercury vapor discharge lamp |
| US7263878B2 (en) | 2002-04-17 | 2007-09-04 | Continental Teves Ag & Co. Ohg | Method for identifying tire characteristics |
| US20070138965A1 (en) * | 2002-10-04 | 2007-06-21 | Koninklijke Philips Electronics N.V. | Low-pressure mercury vapor discharge lamp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2213245A (en) * | 1935-12-23 | 1940-09-03 | Germer Edmund | Electrical discharge device |
| FR802714A (en) * | 1936-02-12 | 1936-09-14 | Improvements to luminescent tubes | |
| FR861799A (en) * | 1938-11-26 | 1941-02-17 | Lampes Sa | Improvements to light discharge devices |
| BE469579A (en) * | 1940-03-01 | |||
| US2482421A (en) * | 1943-10-21 | 1949-09-20 | Gen Electric | Flat tube electrical device |
| FR907572A (en) * | 1944-04-22 | 1946-03-15 | Improvements to the internal device of the discharge tubes | |
| US2445012A (en) * | 1946-10-29 | 1948-07-13 | Clarence H Van Orden | Luminous electrical discharge device |
-
0
- NL NL216121D patent/NL216121A/xx unknown
- BE BE556663D patent/BE556663A/xx unknown
- DE DENDAT1050443D patent/DE1050443B/de active Pending
- NL NL202747D patent/NL202747A/xx unknown
- NL NL106187D patent/NL106187C/xx active
- NL NL105871D patent/NL105871C/xx active
- NL NL105216D patent/NL105216C/xx active
- NL NL202746D patent/NL202746A/xx unknown
- BE BE556306D patent/BE556306A/xx unknown
- BE BE543614D patent/BE543614A/xx unknown
-
1955
- 1955-12-06 GB GB34975/55A patent/GB802877A/en not_active Expired
- 1955-12-13 FR FR1162139D patent/FR1162139A/en not_active Expired
- 1955-12-13 DE DEG18571A patent/DE1051398B/en active Pending
- 1955-12-13 GB GB35774/55A patent/GB821321A/en not_active Expired
- 1955-12-14 CH CH341907D patent/CH341907A/en unknown
- 1955-12-14 DE DEG18585A patent/DE1044274B/en active Pending
- 1955-12-14 CH CH341906D patent/CH341906A/en unknown
-
1957
- 1957-03-27 GB GB9999/57A patent/GB856912A/en not_active Expired
- 1957-04-02 FR FR71667D patent/FR71667E/en not_active Expired
- 1957-04-03 GB GB10932/57A patent/GB857711A/en not_active Expired
- 1957-04-04 FR FR71976D patent/FR71976E/en not_active Expired
- 1957-04-08 CH CH349696D patent/CH349696A/en unknown
- 1957-04-11 FR FR71978D patent/FR71978E/en not_active Expired
- 1957-04-15 DE DEG21912A patent/DE1054171B/en active Pending
- 1957-04-18 CH CH349340D patent/CH349340A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL105216C (en) | |
| BE543614A (en) | |
| CH341907A (en) | 1959-10-31 |
| CH349696A (en) | 1960-10-31 |
| NL105871C (en) | |
| NL216121A (en) | |
| BE556306A (en) | |
| DE1054171B (en) | 1959-04-02 |
| FR71978E (en) | 1960-03-15 |
| FR71667E (en) | 1960-01-13 |
| GB802877A (en) | 1958-10-15 |
| GB857711A (en) | 1961-01-04 |
| DE1044274B (en) | 1958-11-20 |
| NL106187C (en) | |
| FR1162139A (en) | 1958-09-09 |
| CH341906A (en) | 1959-10-31 |
| BE556663A (en) | |
| FR71976E (en) | 1960-03-15 |
| NL202747A (en) | |
| CH349340A (en) | 1960-10-15 |
| DE1051398B (en) | 1959-02-26 |
| NL202746A (en) | |
| DE1050443B (en) | |
| GB856912A (en) | 1960-12-21 |
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