US4206387A
Expired / Lapsed
US
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Electrodeless light source having rare earth molecular continua
Assignee: Osram Sylvania Inc
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Filing: 1978-09-11
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Granted: 1980-06-03
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Expires: 1998-09-11
Abstract
Abstract An electrodeless lamp apparatus includes an electrodeless, light-transmitting, envelope for housing a rare-earth compound fill, and a termination fixture, electrodelessly coupled to the envelope, adapted to create an electrical condition for exciting the fill. The fill can include mercury and a noble gas, such as argon. The rare-earth compound is preferably a rare-earth halide, such as dysprosium iodide and holmium iodide. The fill can include a halide of mercury, such as HgBr 2 . One example of a fill is Hg/DyI 3 /HoI 3 /CsI/HgBr 2 /Ar. A second example of a fill is Hg/NdI 3 /DyI 3 /CsI/Ar. A third example of a fill is Hg/Pr/DyI 3 /HgI 2 /CsI/HgBr 2 /Ar. A fourth example of a fill is Hg/Yb/CsCl/HgCl 2 /Ar.
Inventors
- 👤 Jerry M. Kramer
- 👤 William H. McNeill
- 👤 Paul O. Haugsjaa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:10
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/048
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
39 words
Electrodeless lamp apparatus comprising (a) a fill including a rare-earth compound; (b) an electrodeless, light-transmitting, envelope for housing said fill; and (c) excitation means, electrodelessly coupled to said envelope, adapted to create an electrical condition for exciting said fill.
Claim 2
Dependent Claim
39 words
Electrodeless lamp apparatus comprising (a) a fill including a rare-earth compound; (b) an electrodeless, light-transmitting, envelope for housing said fill; and (c) excitation means, electrodelessly coupled to said envelope, adapted to create an electrical condition for exciting said fill.
Claim 3
Dependent Claim
15 words
The apparatus as recited in claim 1 wherein said excitation means is a termination fixture.
Claim 4
Dependent Claim
26 words
The apparatus as recited in claim 2 wherein said termination fixture includes field shaping couplers which excite a broad arc which avoids termination on said envelope.
Claim 5
Dependent Claim
17 words
The apparatus as recited in claim 1 wherein said fill further includes mercury and a noble gas.
Claim 6
Dependent Claim
13 words
The apparatus as recited in claim 4 wherein said noble gas is argon.
Claim 7
Dependent Claim
15 words
The apparatus as recited in claim 1 wherein said rare-earth compound is a rare-earth halide.
Claim 8
Dependent Claim
14 words
The apparatus as recited in claim 6 wherein said rare-earth compound is dysprosium iodide.
Claim 9
Dependent Claim
14 words
The apparatus as recited in claim 6 wherein said rare-earth compound is holmium iodide.
Claim 10
Dependent Claim
15 words
The apparatus as recited in claim 5 wherein said fill includes a halide of mercury.
Claim 11
Dependent Claim
14 words
The apparatus as recited in claim 9 wherein said fill includes HgBr 2 .
Claim 12
Dependent Claim
18 words
The apparatus as recited in claim 1 wherein said fill includes Hg/DyI 3 /HoI 3 /CsI/HgBr 2 /Ar.
Claim 13
Dependent Claim
37 words
The apparatus as recited in claim 11 wherein said fill, with 10 Torr of argon, includes chemicals related as follows: ______________________________________
Hg 1.0 microliters
DyI.sub.3 2.45 milligrams
HoI.sub.3 2.30 milligrams
HgBr.sub.2 3.50 milligrams
CsI 2.30 milligrams
______________________________________
Claim 14
Dependent Claim
16 words
The apparatus as recited in claim 1 wherein said fill includes Hg/NdI 3 /DyI 3 /CsI/Ar.
Claim 15
Dependent Claim
35 words
The apparatus as recited in claim 13 wherein said fill, with a 10 Torr of argon, includes chemicals related as follows: ______________________________________
Hg 1.2 microliters
NdI.sub.3 2.0 milligrams
DyI.sub.3 2.35 milligrams
CsI 2.20 milligrams
______________________________________
Claim 16
Dependent Claim
18 words
The apparatus as recited in claim 1 wherein said fill includes Hg/Pr/DyI 3 /HgI 2 /CsI/HgBr 2 /Ar.
Claim 17
Dependent Claim
40 words
The apparatus as recited in claim 15 wherein said fill, with 10 Torr of argon, includes chemicals related as follows: ______________________________________
Hg 1.1 microliters
Pr 0.8 milligram
DyI.sub.3 2.15 milligrams
HgI.sub.2 2.90 milligrams
CsI 2.60 milligrams
HgBr.sub.2 3.65 milligrams
______________________________________
Claim 18
Dependent Claim
14 words
The apparatus as recited in claim 1 wherein said fill includes Hg/Yb/CsCl/HgCl 2 /Ar.
Claim 19
Dependent Claim
34 words
The apparatus as recited in claim 17 wherein said fill, with 10 Torr of argon, includes chemicals related as follows: ______________________________________
Hg 1.2 microliters
Yb 2.90 milligrams
CsCl 1.55 milligrams
HgCl.sub.2 4.45 milligrams
______________________________________
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) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |