US4945290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-power radiator
Assignee: Excelitas Noblelight GmbH
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Filing: 1988-10-21
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Granted: 1990-07-31
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Expires: 2008-10-21
Abstract
Abstract The high-power radiator includes a discharge space (4) bounded by dielectrics (1, 2) and filled with a noble gas or gas mixture and electrodes (5, 6). The electrodes (5, 6) are transparent to the radiation produced by silent electrical discharges and are, situated on the surfaces of the di-electrics facing away from the discharge space. In this manner, a large-area UV radiator with high efficiency is produced which can be operated with high electrical power densities of up to 50 kW/m2 of active electrode surface.
Inventors
- 👤 Baldur Eliasson
- 👤 Ulrich Kogelschatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:48
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/046
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
124 words
A high-power radiator for ultraviolet light, said high-power radiator comprising: (a) a first dielectric having a first side and a second side; (b) a second dielectric having a first side facing but spaced from the first side of said first dielectric to form a discharge space therebetween and a second side; (c) a first electrode located on the second surface of said first dielectric; (d) a second electrode located on the second surface of said second dielectric; (e) a filling gas located in said discharge space; and (f) a source of alternating current connected to said first and second electrodes, (g) wherein said first dielectric, said second dielectric, said first electrode, and said second electrode are all transparent to radiation from said filling gas.
Claim 2
Dependent Claim
124 words
A high-power radiator for ultraviolet light, said high-power radiator comprising: (a) a first dielectric having a first side and a second side; (b) a second dielectric having a first side facing but spaced from the first side of said first dielectric to form a discharge space therebetween and a second side; (c) a first electrode located on the second surface of said first dielectric; (d) a second electrode located on the second surface of said second dielectric; (e) a filling gas located in said discharge space; and (f) a source of alternating current connected to said first and second electrodes, (g) wherein said first dielectric, said second dielectric, said first electrode, and said second electrode are all transparent to radiation from said filling gas.
Claim 3
Dependent Claim
19 words
A high-power radiator as recited in claim 1 wherein said first and second electrodes are transparent, electrically conducting layers.
Claim 4
Dependent Claim
30 words
A high-power radiator as recited in claim 2 wherein said layers are formed of a material selected from the group consisting of indium oxide, tin oxide, alkali metal, and gold.
Claim 5
Dependent Claim
31 words
A high-power radiator as recited in claim 1 wherein said first and second electrodes are composed of metallic wires which are arranged on or in said first and second dielectric, respectively.
Claim 6
Dependent Claim
19 words
A high-power radiator as recited in claim 1 wherein said first and second electrodes are formed as wire gauze.
Claim 7
Dependent Claim
33 words
A high-power radiator as recited in claim 1 wherein: (a) said filling gas includes a noble gas or a mixture of noble gases and (b) said filling gas forms excimers under discharge conditions.
Claim 8
Dependent Claim
36 words
A high-power radiator as recited in claim 1 wherein said filling gas includes a gas selected from the group consisting of mercury, nitrogen, selenium, deuterium, and mixtures of these gases alone or with a noble gas.
Claim 9
Dependent Claim
20 words
A high-power radiator as recited in claim 1 wherein said first and second dielectrics are at least generally planar panels.
Claim 10
Dependent Claim
20 words
A high-power radiator as recited in claim 1 wherein said first and second dielectrics are at least generally concentric tubes.
Claim 11
Dependent Claim
17 words
A high-power radiator as recited in claim 1 wherein said filling gas is a noble gas/halogen mixture.
Claim 12
Dependent Claim
22 words
A high-power radiator as recited in claim 10 wherein said noble gas/halogen mixture is selected from Ar/F, Kr/F, Xe/Cl, Xe/I, and Xe/Br.
Claim 13
Dependent Claim
24 words
A high-power radiator as recited in claim 10 wherein said filling gas contains a buffer gas in the form of an additional noble gas.
Claim 14
Dependent Claim
24 words
A high-power radiator as recited in claim 12 wherein said additional noble gas is selected from the group consisting of argon, helium, and neon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-30 | 1994-01-29 | 1994-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-30 | 1998-01-29 | 1998-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-30 | 2002-01-29 | 2002-07-31 | $7700.00 | Window Closed / Lapsed |