GB1237009A - Apparatus for the excitation of electrodeless discharge tubes - Google Patents
Apparatus for the excitation of electrodeless discharge tubesInfo
- Publication number
- GB1237009A GB1237009A GB61155/68A GB6115568A GB1237009A GB 1237009 A GB1237009 A GB 1237009A GB 61155/68 A GB61155/68 A GB 61155/68A GB 6115568 A GB6115568 A GB 6115568A GB 1237009 A GB1237009 A GB 1237009A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- sleeve
- electrodeless discharge
- gap
- potential end
- 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
- 230000005284 excitation Effects 0.000 title abstract 2
- 239000003990 capacitor Substances 0.000 abstract 3
- 239000002184 metal Substances 0.000 abstract 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract 2
- 229910052786 argon Inorganic materials 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 229910052754 neon Inorganic materials 0.000 abstract 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 238000010183 spectrum analysis Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
- H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
- H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
- H01J65/044—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by a separate microwave unit
Abstract
1,237,009. Discharge lamps; cavity resonators. EVANS ELECTROSELENIUM Ltd. 17 Dec., 1969 [23 Dec., 1968], No. 61155/68. Headings H1D and H1W. An excitation apparatus for electrodeless discharge tubes comprises a resonant cavity 11, a slave 22 coaxial with the cavity and spaced from the high potential end thereof, means 26 to retain an electrodeless discharge tube in the sleeve with an internal metal coated area of the discharge tube in the gap between the cavity and the sleeve, and at least one capacitor plate 30 connected to the low potential end of the cavity and movable towards and away from the cavity axis adjacent the high potential end of the cavity in order to tune the cavity to the exact frequency of an energizing supply. The resonant cavity 11 and sleeve 22 are fixed in end plates 12 and 18 of a tubular casing 14, sleeve 22 is threaded and is fixed in position by a lock nut 24 to enable the gap 23 to be adjusted. An insulated conductor of a coaxial connector 28 projects through the cavity 11 and is secured to an electrode 29. An electrodeless discharge lamp in the form of a sealed glass tube containing a spot of pure metal on the inner surface and a minute amount of a rare gas e.g. neon or argon, is held in the sleeve 22 by a spring clip 26 so that the metal lies in the gap 23 and the radiation therefrom is projected through an aperture 37 for use in spectral analysis. A flat plate 30a is secured to the cavity 11 to cooperate with capacitor plate 30 which is mounted on a threaded spindle 31 looked in adjustable position in a split bush 32 by a screw 35. Two or more capacitor plates 30 may be provided, e.g. a second tuning assembly (Fig. 2, not shown) may be mounted at right angles to the assembly shown. A system including a magnetron, directional coupler, detector, and reflected power motor for energizing and adjusting the apparatus is described (Fig. 3, not shown).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB61155/68A GB1237009A (en) | 1968-12-23 | 1968-12-23 | Apparatus for the excitation of electrodeless discharge tubes |
| US885602A US3600712A (en) | 1968-12-23 | 1969-12-16 | Apparatus for the excitation of electrodeless discharge tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB61155/68A GB1237009A (en) | 1968-12-23 | 1968-12-23 | Apparatus for the excitation of electrodeless discharge tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1237009A true GB1237009A (en) | 1971-06-30 |
Family
ID=10486676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB61155/68A Expired GB1237009A (en) | 1968-12-23 | 1968-12-23 | Apparatus for the excitation of electrodeless discharge tubes |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3600712A (en) |
| GB (1) | GB1237009A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997816A (en) * | 1975-04-21 | 1976-12-14 | Gte Laboratories Incorporated | Starting assist device for an electrodeless light source |
| GB2284091A (en) * | 1993-11-16 | 1995-05-24 | Atomic Energy Authority Uk | Plasma light source |
| US5579332A (en) * | 1993-11-16 | 1996-11-26 | United Kingdom Atomic Energy Authority | Plasma light source |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4063132A (en) * | 1976-08-04 | 1977-12-13 | Gte Laboratories Inc. | DC powered microwave discharge in an electrodeless light source |
| CA1246762A (en) * | 1985-07-05 | 1988-12-13 | Zenon Zakrzewski | Surface wave launchers to produce plasma columns and means for producing plasma of different shapes |
| AT388814B (en) * | 1985-11-15 | 1989-09-11 | Paar Anton Kg | METHOD AND DEVICE FOR PRODUCING AN HF-INDUCED PLASMA PLASMA |
| US5027041A (en) * | 1990-01-16 | 1991-06-25 | Gte Products Corporation | Integrated radio-frequency light source for large scale display |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2189279A (en) * | 1937-01-25 | 1940-02-06 | Ralph E Bitner | Sterilizer |
| US2670649A (en) * | 1949-06-04 | 1954-03-02 | Cons Eng Corp | Spectroscopic analysis of a gas mixture excited by a high-frequency electric field |
| US2773215A (en) * | 1952-01-22 | 1956-12-04 | Westinghouse Electric Corp | High-frequency apparatus |
| US2842747A (en) * | 1954-09-03 | 1958-07-08 | Itt | Self-triggered microwave attenuator |
| US3252116A (en) * | 1963-12-17 | 1966-05-17 | Rca Corp | Combined tuning and stabilization means for cavity resonators |
| US3514604A (en) * | 1968-06-28 | 1970-05-26 | Mcpherson Instr Corp | Pulsed microwave light source |
-
1968
- 1968-12-23 GB GB61155/68A patent/GB1237009A/en not_active Expired
-
1969
- 1969-12-16 US US885602A patent/US3600712A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3997816A (en) * | 1975-04-21 | 1976-12-14 | Gte Laboratories Incorporated | Starting assist device for an electrodeless light source |
| GB2284091A (en) * | 1993-11-16 | 1995-05-24 | Atomic Energy Authority Uk | Plasma light source |
| US5579332A (en) * | 1993-11-16 | 1996-11-26 | United Kingdom Atomic Energy Authority | Plasma light source |
| GB2284091B (en) * | 1993-11-16 | 1997-07-02 | Atomic Energy Authority Uk | Plasma light source |
Also Published As
| Publication number | Publication date |
|---|---|
| US3600712A (en) | 1971-08-17 |
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