GB456608A - Improvements in or relating to electric discharge devices - Google Patents
Improvements in or relating to electric discharge devicesInfo
- Publication number
- GB456608A GB456608A GB24877/35A GB2487735A GB456608A GB 456608 A GB456608 A GB 456608A GB 24877/35 A GB24877/35 A GB 24877/35A GB 2487735 A GB2487735 A GB 2487735A GB 456608 A GB456608 A GB 456608A
- Authority
- GB
- United Kingdom
- Prior art keywords
- envelope
- projection
- electrodes
- distance
- diameter
- 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
- H01J61/84—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/32—Seals for leading-in conductors
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Discharge Lamp (AREA)
Abstract
456,608. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent - Treuhand-Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) Sept. 6, 1935, No. 24877. [Class 39 (i)] A high-pressure discharge lamp, i.e. one in which the vapour pressure in operation reaches 10 .atmospheres or more, of the type having an approximately spherical envelope, the diameter of which is considerably greater than the distance between the electrodes, is provided with a dome-shaped projection to receive deposits which might interfere with the emission of light. The diameter of this projection is greater than the distance between the electrodes, which does not greatly exceed the distance of either of them from the envelope. The Figures show such a lamp with an envelope of about 30 mm. diameter filled with neon at a pressure of about 5 mm. and containing a quantity of mercury which is all evaporated in operation. The domeshaped projection 6 is covered with a reflecting layer 12 or an asbestos lagging and other projecting parts, such as those surrounding the leads, are similarly coated. The projection 6 may be prolonged nearly to the electrodes as shown by the dotted lines 11. The light to be used issues through a portion 7 of the envelope which may be protected by a partition 8 with an opening 10; the remainder of the envelope, particularly the part opposite the portion 7, may be silvered.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP71723D DE646241C (en) | 1935-08-29 | 1935-08-29 | Electric mercury vapor discharge lamp with a noble gas base filling, the operating vapor pressure of which is more than 20 atmospheres |
| DE2135734X | 1936-09-15 | ||
| GB2605836A GB476833A (en) | 1936-09-25 | 1936-09-25 | Improvements in or relating to high-pressure metal-vapour electric discharge lamps |
| DE2135661X | 1937-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB456608A true GB456608A (en) | 1936-11-12 |
Family
ID=32045958
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24877/35A Expired GB456608A (en) | 1935-08-29 | 1935-09-06 | Improvements in or relating to electric discharge devices |
| GB2045/36A Expired GB468643A (en) | 1935-08-29 | 1936-01-22 | Improvements in or relating to extra-high-pressure metal vapour electric discharge devices |
| GB20178/36A Expired GB478368A (en) | 1935-08-29 | 1936-07-21 | Improvements in or relating to the manufacture of electric discharge devices |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2045/36A Expired GB468643A (en) | 1935-08-29 | 1936-01-22 | Improvements in or relating to extra-high-pressure metal vapour electric discharge devices |
| GB20178/36A Expired GB478368A (en) | 1935-08-29 | 1936-07-21 | Improvements in or relating to the manufacture of electric discharge devices |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US2103041A (en) |
| DE (1) | DE646241C (en) |
| FR (2) | FR810098A (en) |
| GB (3) | GB456608A (en) |
| NL (1) | NL48532C (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE875687C (en) * | 1938-10-05 | 1953-05-04 | Electricitaets Ges Sanitas M B | Arrangement for operating a high-pressure mercury vapor lamp with a basic gas filling, non-activated incandescent cathodes heated by the discharge and an elongated arc |
| US2567491A (en) * | 1943-12-29 | 1951-09-11 | Mitchell John Wesley | Luminous discharge tube |
| US2545884A (en) * | 1946-01-18 | 1951-03-20 | Gen Electric | High-pressure mercury vapor electric discharge lamp |
| US2518944A (en) * | 1948-02-13 | 1950-08-15 | Gen Electric | Electric discharge device seal |
| US2716713A (en) * | 1950-03-22 | 1955-08-30 | Gen Electric | Cold electrode pulse lamp structure |
| US2707247A (en) * | 1951-06-05 | 1955-04-26 | Hanovia Chemical & Mfg Co | Vapor electric discharge lamp |
| GB835183A (en) * | 1957-05-07 | 1960-05-18 | Philips Electrical Ind Ltd | Improvements in or relating to low-pressure mercury vapour discharge tubes |
| US2939985A (en) * | 1957-10-09 | 1960-06-07 | Philips Corp | Low-pressure mercury vapour discharge tube |
| US3219870A (en) * | 1963-06-14 | 1965-11-23 | Gen Electric | High pressure discharge lamps seal and base |
| US3293493A (en) * | 1963-09-25 | 1966-12-20 | Gen Electric | Light source for color synthesis |
| US4202999A (en) * | 1978-04-11 | 1980-05-13 | General Electric Company | Fused silica lamp envelope and seal |
| DE2833896A1 (en) * | 1978-08-02 | 1980-02-21 | Patra Patent Treuhand | MELTING DOWN FOR ELECTRIC LAMPS |
| GB2105904B (en) * | 1981-09-04 | 1985-10-23 | Emi Plc Thorn | High pressure discharge lamps |
| US5312472A (en) * | 1992-09-23 | 1994-05-17 | Spectra-Physics Lasers, Inc. | Method for manufacturing resonant cavity for laser |
-
1935
- 1935-08-29 DE DEP71723D patent/DE646241C/en not_active Expired
- 1935-09-06 GB GB24877/35A patent/GB456608A/en not_active Expired
-
1936
- 1936-01-22 GB GB2045/36A patent/GB468643A/en not_active Expired
- 1936-07-21 GB GB20178/36A patent/GB478368A/en not_active Expired
- 1936-08-06 FR FR810098D patent/FR810098A/en not_active Expired
- 1936-08-10 NL NL78875A patent/NL48532C/xx active
- 1936-08-21 US US97278A patent/US2103041A/en not_active Expired - Lifetime
-
1937
- 1937-01-11 US US120066A patent/US2135661A/en not_active Expired - Lifetime
- 1937-09-13 US US163700A patent/US2135734A/en not_active Expired - Lifetime
- 1937-09-15 FR FR48790D patent/FR48790E/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE646241C (en) | 1937-06-14 |
| GB478368A (en) | 1938-01-18 |
| FR810098A (en) | 1937-03-15 |
| NL48532C (en) | 1940-06-15 |
| US2135661A (en) | 1938-11-08 |
| GB468643A (en) | 1937-07-09 |
| FR48790E (en) | 1938-06-23 |
| US2103041A (en) | 1937-12-21 |
| US2135734A (en) | 1938-11-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB456608A (en) | Improvements in or relating to electric discharge devices | |
| US2386277A (en) | Fluorescent lamp | |
| US1879159A (en) | Electric discharge device | |
| GB372154A (en) | Improvements in luminous electric discharge tubes | |
| GB406611A (en) | Improvements in luminous electric discharge tubes | |
| GB448585A (en) | Improvements in electric discharge devices | |
| GB456184A (en) | Improvements in luminous electric discharge lamps | |
| GB401846A (en) | Improvements in electric discharge lamps | |
| GB412879A (en) | Improvements in electric discharge tubes | |
| GB419045A (en) | Improvements in luminous electric discharge lamps | |
| GB457644A (en) | Improvements in high pressure metal vapour electric discharge devices | |
| GB437549A (en) | Improvements in or relating to electric discharge devices | |
| GB517094A (en) | Improvements in high-pressure metal-vapour electric discharge lamps | |
| GB1035593A (en) | Improvements in or relating to low-pressure mercury vapour discharge lamps | |
| GB432511A (en) | Improvements in electric discharge devices | |
| GB455101A (en) | Improvements in the manufacture of electric discharge devices | |
| GB459250A (en) | Improvements in electric discharge devices | |
| GB459323A (en) | Improvements in or relating to electric discharge lamps | |
| GB440911A (en) | Improvements in electric discharge lamps | |
| GB407565A (en) | Improvements in luminous electric discharge lamps | |
| GB422256A (en) | Improvements in or relating to electric discharge lamps of the cathode glow type | |
| GB436894A (en) | Capacity operated discharge lamp | |
| GB525465A (en) | Improvements relating to high pressure mercury-vapour electric discharge tubes | |
| GB428678A (en) | Improvements in luminous electric discharge tubes | |
| GB460963A (en) | Improvements in or relating to means for illumination comprising luminescent materials |