GB2472293A - Electrodeless high pressure discharge lamp - Google Patents
Electrodeless high pressure discharge lamp Download PDFInfo
- Publication number
- GB2472293A GB2472293A GB1010402A GB201010402A GB2472293A GB 2472293 A GB2472293 A GB 2472293A GB 1010402 A GB1010402 A GB 1010402A GB 201010402 A GB201010402 A GB 201010402A GB 2472293 A GB2472293 A GB 2472293A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fill
- bulb
- high pressure
- lamp
- pressure discharge
- 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.)
- Withdrawn
Links
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 9
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 8
- 150000000476 acetylides Chemical class 0.000 claims abstract description 7
- 239000001273 butane Substances 0.000 claims abstract description 7
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims abstract description 7
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001294 propane Substances 0.000 claims abstract description 7
- 150000002894 organic compounds Chemical class 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 230000037237 body shape Effects 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000003989 dielectric material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 6
- 239000000306 component Substances 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 4
- 229910001507 metal halide Inorganic materials 0.000 description 4
- 150000005309 metal halides Chemical class 0.000 description 4
- 229910052738 indium Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- VWWMOACCGFHMEV-UHFFFAOYSA-N dicarbide(2-) Chemical compound [C-]#[C-] VWWMOACCGFHMEV-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 229910052716 thallium Inorganic materials 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- -1 TeS Chemical class 0.000 description 1
- 229910001508 alkali metal halide Inorganic materials 0.000 description 1
- 150000008045 alkali metal halides Chemical class 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- GEZAXHSNIQTPMM-UHFFFAOYSA-N dysprosium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Dy+3].[Dy+3] GEZAXHSNIQTPMM-UHFFFAOYSA-N 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 102220047090 rs6152 Human genes 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 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
-
- 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
-
- 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
- H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component
-
- 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
- H01J61/14—Selection of substances for gas fillings; Specified operating pressure or temperature having one or more carbon compounds as the principal constituents
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
The lamp comprises a fill mixture contained within a bulb which when receiving microwave energy from a resonating body forms a light-emitting plasma. The fill comprises organic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
Description
Title: Electrodeless High Pressure DISCHARGE lamp Technical Area The invention relies to the field of electrodeless high pressure discharge lamps (EHID), especially intended for general illumination or photo-optical application.
Background art
From US-A US2009146543 plasma lamps are used. They are based on electrcdeless high pressure discharge lamps which are often referred to as EHID. This citation is in-corporated by reference.
Description of the invention
The task of the invention in hand is to provide an im-proved EHID lamp.
This task is solved by means of the following features: An electrodeless high pressure discharge lamp comprising a fill of fill mixture contained within a bulb which when receiving microwave energy from a resonating body forms a light-emitting plasma wherein the fill comprises organic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
An electrodeless high intensity metal halide lamp with the following fill components is disclosed: A gaseous part of the fill which has gaseous form under normal conditions. This means the temperature range in- between -20 up to 20 °0. Said fill part contains ionis-able components: This may be a mixture of: Proportion 1: (a) inert rare gases typically in the pressure range of 0.1 mbar to 10000 mbar, typically 5 to 500 mbar. Exam-ples are Kr, Ar, Xe, Ne.
(b) molecular gases in the range of a proportion of at least 250 ppm. preferably these are the following gases alone or in combination: D2, H2, DH; 00, 002, N20, SF6, 012, J2, 8r2, N2, acetylene, or other organic gases, esp.
methane, propane, butane or the like. The Amount of gases (b) is preferably in the range of about 250 ppm to 5000 ppm.
Proportion 2: In addition the fill comprises a non- gaseous part with low vapor pressure at standard condi- tions. This non-gaseous part comprises alone or in combi-nation: (a) a first part consisting of a elemental metal which is dosed as a metal drop or chip wire or sphere or powder or evaporated coating: like -Hg, Zn, Tl, Mg, Mn, In, W, Rh, Re, Ir, Os, Mo, Nb, Sn, Ga, Al, or the like Typically if dosed intentionally it should be dosed in a concentration of at least 0.lmg/ccm. A preferred range is 1 to 10 mg/cm3 A typical amount is in the range of 0.2 to pmol/cm3 (b) a second part consisting of a metal halide mixture.
this might be divided up in (bl) at least one or a group of metal halides with high volatility typically with a boiling point in the range below 95Q0 C. Preferred embodiments are halides of the following metals alone or in combination: Zn, In, Tl, Mn, Mg, Al, Sn, Hf, Zr, Ta, Nb, \J, Sb, Ga, Cu, Fe, or the like.
(b2) at least one or a group of metal halides with low volatility with a boiling point in the range of at least 95Q° C. Preferred embodiments are rare earth -halides or lanthanoide-halides, esp. of Y, Sc, La, alkali-metal halides.
(b3) at least one or a group of oxides which may serve as a donator of oxygen; preferred embodiments are A1203, CaD, or the like.
(b4) at least one or a group of metal-organic agents like acetylides of Cu, Fe, In, or the like; (b5) at least one or a group of chalcogenes, preferably Te, Se, 5, or/and chalcogenides like TeS, SeS, and so on.
A typical amount of second part (b) is in the range of 0.2 to 200 pmol/cm3.
The fill comprises or is composed by at least one compo-nent of first part and one of second part.
Preferably an advantageous embodiment is a combination of proportion 1, item (a), abbreviated by 1(a), and propor- tion 2 embodiment (a), abbreviated as 2(a) plus embodi- ment (bl) plus embodiment (b2) . Such a fill may prefera-bly have additional ingredients from proportion 1, item b and or from proportion 2, item b5.
A preferred embodiment is a combination of 1(a) + 1(b) -i-2(bl) + 2(b4) or a combination of l(a)+ 2(b4) + 2(b5).
By using these fills an especially constricted plasma formation can be obtained with a high molecular emission contribution.
Preferably the arc tube has a tubular or pill shape. It can be made preferably from alumina ceramics or glass ce-ramic or quartz glass.
The arc may be placed in an outer bulb which is filled with gas or which is evacuated.
Preferably the arc tube for use in an EHID system of the invention can have different inner and outer shape, see figure 1. Typically for longitudinal electric field igni-tion and longitudinal electrical driving field strength the lamp has an elongated structure around an axis with symmetric ends.
Typically the aspect ratio AR between inner length IL and inner diameter ID of the inner volume (IL/ID) of the dis-charge vessel is typically AR �= 1, most preferable is AR �= 1.5 and especially it should not be higher than AR = 8.
The vessel shape can be cylindrically or partly cylindri-cal in the central part of the lamp extension, but can have different end shapes which may be thinned at the end portions.
If the arc tube vessel is thinned at the end portions ap-plicator structures may be attached in these areas.
Other shapes which are tapered or spheroid shaped may also be used for optimizations of the thermal behaviour and the fill or plasma shape.
Typical the material of the discharge vessel is made of mainly densely sintered polycrystalline ceramic like PCA (alumina), Yttria; lAG, POD (dysprosia), A1N, A1ON or the like.
For sealing at least one of the end portions, ceramic glass frits (typically mixtures of oxides) are used.
Typically for the wall load of the arc tube on the inside referred to the RF input power into the lamp, ranges from 10-60 W/cm3, more favourable in the range 15-40 W/cm3 and the outer wall load ranges typically in the range of 10-W/cm3.
The wall load along the total area where the plasma is created, which may be a shorter length compared to the maximum inner length, ranges on the inside from 20-120 W/cm3, more favourable in the range 30-80 W/cm and on the outer wall in the range 20-60 W/cm3.
The fill of the discharge vessel has a fill that can be ionized and contains at least a gaseous component in the cold non-operational condition.
Typically it contains several components which may be va-porized during operation and build up a stable vapour pressure at operational conditions.
The typical pressure under these conditions is at least 0.5 bar and the system can be considered to build up a high pressure discharge.
Description of the drawings
Figure 1 several shapes for EHID discharge vessels; Figure 2 two shapes for outer bulbs for vessels accord-ing to Figure 1.
Best mode for carrying out the invention
Figure 1 shows schematically a PCA discharge vessel. It can be of different shape. Figure la to lh show preferred shapes. A1203 ceramic is a preferred material.
Figure 2 shows an El-lID arc tube within an outer bulb. The inner bulb may be locked by cage wires, see Figure 2a, or is held in place by a special end construction with a co-ating, see Figure 2b.
An advantageous fill is a combination of the following: Xenon plus acetylene or H2 or SF6 plus iodide of Zn plus Cu acetylide.
A second embodiment is a combination of the following: Argon plus Fe acetylide plus SeS.
The whole lamp may comprise the following features (a) a waveguide having a body of a preselected shape and dimensions, the body comprising at least one dielectric material and having at least one surface determined by a waveguide outer surface, each said material having a di-electric constant greater than approximately 2; (b) a first microwave probe positioned within and in in-timate contact with the body, adapted to couple microwave energy into the body from a microwave source having an output and an input and operating within a frequency range from about 0.25 GHz to about 30 GHz at a prese-lected frequency and intensity, the probe connected to the source output, said frequency and intensity and said body shape and dimensions selected so that the body reso-nates in at least one resonant mode having at least one
electric field maximum;
(c) the body having a lamp chamber depending from said waveguide outer surface and determined by a chamber aper- ture and a chamber enclosure determined by a bottom sur-face and at least one surrounding wall surface; (d) a transparent, dielectric bulb within the lamp cham-ber; and (e) a fill mixture contained within the bulb which when receiving microwave energy from the resonating body forms a light-emitting plasma wherein the fill comprises or-ganic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
More generally a plasma lamp is disclosed comprising a fill of fill mixture contained within a bulb which when receiving microwave energy from a resonating body forms a light-emitting plasma wherein the fill comprises organic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
Claims (2)
- Claims What is claimed is: 1. An electrodeless high pressure discharge lamp compris-ing: (a) a waveguide having a body of a preselected shape and dimensions, the body comprising at least one dielectric material and having at least one surface determined by a waveguide outer surface, each said material having a di-electric constant greater than approximately 2; (b) a first microwave probe positioned within and in in-timate contact with the body, adapted to couple microwave energy into the body from a microwave source having an output and an input and operating within a frequency range from about 0.25 GHz to about 30 13Hz at a prese-lected frequency and intensity, the probe connected to the source output, said frequency and intensity and said body shape and dimensions selected so that the body reso-nates in at least one resonant mode having at least oneelectric field maximum;(c) the body having a lamp chamber depending from said waveguide outer surface and determined by a chamber aper- ture and a chamber enclosure determined by a bottom sur-face and at least one surrounding wall surface; (d) a transparent, dielectric bulb within the lamp cham-ber; and (e) a fill mixture contained within the bulb which when receiving microwave energy from the resonating body forms a light-emitting plasma wherein the fill comprises or-ganic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
- 2. An electrodeless high pressure discharge lamp compris-ing a fill of fill mixture contained within a bulb which when receiving microwave energy from a resonating body forms a light-emitting plasma wherein the fill comprises organic compounds chosen from a group which comprises acetylene, methane, propane, butane, and acetylides.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22978409P | 2009-07-30 | 2009-07-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201010402D0 GB201010402D0 (en) | 2010-08-04 |
| GB2472293A true GB2472293A (en) | 2011-02-02 |
Family
ID=42582748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1010402A Withdrawn GB2472293A (en) | 2009-07-30 | 2010-06-22 | Electrodeless high pressure discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2472293A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172650A (en) * | 1981-04-17 | 1982-10-23 | Mitsubishi Electric Corp | Non-electrode electric-discharge lamp |
| EP0422816A2 (en) * | 1989-10-11 | 1991-04-17 | THORN EMI plc | A discharge tube arrangement |
| EP0521553A2 (en) * | 1991-07-01 | 1993-01-07 | Koninklijke Philips Electronics N.V. | High-pressure glow discharge lamp |
| JPH1069890A (en) * | 1996-08-27 | 1998-03-10 | Matsushita Electric Ind Co Ltd | Electrodeless discharge lamp device |
| CN101261924A (en) * | 2007-03-09 | 2008-09-10 | 许树良 | A low air pressure CO electromagnetic lamp |
| US20090146543A1 (en) * | 2000-07-31 | 2009-06-11 | Luxim Corporation | Plasma lamp with dielectric waveguide integrated with transparent bulb |
| GB2468580A (en) * | 2009-03-10 | 2010-09-15 | Osram Ges Mit Beschrankter | Electrodeless high pressure discharge lamp with cage wire support structure |
| WO2010104919A2 (en) * | 2009-03-13 | 2010-09-16 | Osram Sylvania Inc. | Ehid lamp having integrated field applicator and optical coupler |
-
2010
- 2010-06-22 GB GB1010402A patent/GB2472293A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57172650A (en) * | 1981-04-17 | 1982-10-23 | Mitsubishi Electric Corp | Non-electrode electric-discharge lamp |
| EP0422816A2 (en) * | 1989-10-11 | 1991-04-17 | THORN EMI plc | A discharge tube arrangement |
| EP0521553A2 (en) * | 1991-07-01 | 1993-01-07 | Koninklijke Philips Electronics N.V. | High-pressure glow discharge lamp |
| JPH1069890A (en) * | 1996-08-27 | 1998-03-10 | Matsushita Electric Ind Co Ltd | Electrodeless discharge lamp device |
| US20090146543A1 (en) * | 2000-07-31 | 2009-06-11 | Luxim Corporation | Plasma lamp with dielectric waveguide integrated with transparent bulb |
| CN101261924A (en) * | 2007-03-09 | 2008-09-10 | 许树良 | A low air pressure CO electromagnetic lamp |
| GB2468580A (en) * | 2009-03-10 | 2010-09-15 | Osram Ges Mit Beschrankter | Electrodeless high pressure discharge lamp with cage wire support structure |
| WO2010104919A2 (en) * | 2009-03-13 | 2010-09-16 | Osram Sylvania Inc. | Ehid lamp having integrated field applicator and optical coupler |
Also Published As
| Publication number | Publication date |
|---|---|
| GB201010402D0 (en) | 2010-08-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |