GB1058103A - Improvements in or relating to fluorescent lamps - Google Patents
Improvements in or relating to fluorescent lampsInfo
- Publication number
- GB1058103A GB1058103A GB28773/64A GB2877364A GB1058103A GB 1058103 A GB1058103 A GB 1058103A GB 28773/64 A GB28773/64 A GB 28773/64A GB 2877364 A GB2877364 A GB 2877364A GB 1058103 A GB1058103 A GB 1058103A
- Authority
- GB
- United Kingdom
- Prior art keywords
- window
- coating
- lamp
- july
- argon
- 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
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/42—Devices for influencing the colour or wavelength of the light by transforming the wavelength of the light by luminescence
- H01J61/44—Devices characterised by the luminescent material
-
- 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
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
1,058,103. Fluorescent discharge lamps. GENERAL ELECTRIC CO. July 13, 1964 [July 12, 1963], No. 28773/64. Heading H1D. A window extending in width over a minor portion of the periphery and limited in length to the part of the lamp between the electrodes is provided in an internal coating of a reflector fluorescent lamp envelope containing mercury vapour and an inert gas at a low pressure. The coating may comprise a reflective layer of titanium dioxide or zirconia covering the whole interior of the envelope apart from the window and covered by a phosphor layer, e.g. calcium halophosphate activated with manganese and antimony, which may or may not also cover the window. Alternatively the reflective layer may be omitted, the phosphor coating being made sufficiently thick to provide a screen which is reflective to visible light except for the area forming the window where the phosphor coating is either thin or absent. The window may extend over a peripheral angle of from 20 degrees to 90 degrees. Curves (Fig. 4, not shown) illustrate the effect of different window lengths on the lamp brightness. The filling may be argon or a mixture of argon and neon or helium at a pressure of a few mm. of Hg. with sufficient mercury to provide a vapour pressure of a few microns in operation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US294536A US3275872A (en) | 1963-07-12 | 1963-07-12 | Reflector fluorescent lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1058103A true GB1058103A (en) | 1967-02-08 |
Family
ID=23133859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28773/64A Expired GB1058103A (en) | 1963-07-12 | 1964-07-13 | Improvements in or relating to fluorescent lamps |
Country Status (2)
Country | Link |
---|---|
US (1) | US3275872A (en) |
GB (1) | GB1058103A (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3377494A (en) * | 1965-05-24 | 1968-04-09 | Westinghouse Electric Corp | Fluorescent lamp envelope with transparent protective coatings |
US3407325A (en) * | 1965-09-28 | 1968-10-22 | Sylvania Electric Prod | Fluorescent manganese activated magnesium gallate phosphor and lamp |
US3442582A (en) * | 1966-12-07 | 1969-05-06 | Ibm | Lamp arrangement for document scanning and modified lamp |
US3526802A (en) * | 1968-01-26 | 1970-09-01 | Westinghouse Electric Corp | Compact high-output fluorescent lamp with amalgam type mercury-vapor pressure control means and a neonargon fill gas |
US3767956A (en) * | 1969-12-24 | 1973-10-23 | Xerox Corp | Aperture fluorescent lamp for copying machines |
US3886396A (en) * | 1971-10-10 | 1975-05-27 | Gen Electric | Fluorescent lamp with protective coating |
US3875455A (en) * | 1973-04-18 | 1975-04-01 | Gen Electric | Undercoat for phosphor in reprographic lamps having titanium dioxide reflectors |
US4088802A (en) * | 1976-05-27 | 1978-05-09 | Westinghouse Electric Corp. | Process for coating envelope for reflector-type fluorescent lamp and the lamp resulting therefrom |
JPS5645564A (en) * | 1979-09-21 | 1981-04-25 | Hitachi Ltd | Reflex fluorescent lamp |
US4317066A (en) * | 1980-02-04 | 1982-02-23 | Xerox Corporation | Gaseous discharge lamp having novel electrode mountings |
DE3316771A1 (en) * | 1983-05-07 | 1984-11-08 | Leybold-Heraeus GmbH, 5000 Köln | LIGHT SOURCE FOR NON-DISPERSIVE GAS ANALYZERS AS A FLUORESCENT LAMP |
JPH0697603B2 (en) * | 1987-04-02 | 1994-11-30 | 東芝ライテック株式会社 | Noble gas discharge lamp |
US5116272A (en) * | 1990-07-03 | 1992-05-26 | Gte Products Corporation | Method and apparatus for forming apertures in fluorescent lamps |
US5142191A (en) * | 1990-07-03 | 1992-08-25 | Gte Products Corporation | Aperture fluorescent lamp with press seal configuration |
US5931565A (en) | 1997-07-02 | 1999-08-03 | Osram Sylvania Inc. | Tubular lamp and reflector with two flexibly coupled sections |
DE20009687U1 (en) * | 2000-05-31 | 2001-03-01 | SLI Lichtsysteme GmbH, 91056 Erlangen | Low pressure discharge lamp |
JP3958131B2 (en) * | 2002-07-10 | 2007-08-15 | 株式会社リコー | Image sensor unit |
US20080106177A1 (en) * | 2006-11-07 | 2008-05-08 | Jansma Jon B | Fluorescent lamp utilizing a partial barrier coating resulting in assymetric or oriented light output and process for same |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3225241A (en) * | 1959-07-09 | 1965-12-21 | Sylvania Electric Prod | Aperture fluorescent lamp |
US3115309A (en) * | 1959-07-09 | 1963-12-24 | Sylvania Electric Prod | Aperture fluorescent lamp |
US3205394A (en) * | 1960-04-06 | 1965-09-07 | Sylvania Electric Prod | Fluorescent lamp having a sio2 coating on the inner surface of the envelope |
-
1963
- 1963-07-12 US US294536A patent/US3275872A/en not_active Expired - Lifetime
-
1964
- 1964-07-13 GB GB28773/64A patent/GB1058103A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3275872A (en) | 1966-09-27 |
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