US4801846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rare earth halide light source with enhanced red emission
Assignee: Osram Sylvania Inc
•
Filing: 1987-10-23
•
Granted: 1989-01-31
•
Expires: 2007-10-23
Abstract
Abstract This invention teaches a novel high pressure electric discharge lamp which has the desired properties of high efficacy, good color rendering, and a warm color temperature. These desired properties are attained by utilizing as fills the rare earth iodides in conjunction with calcium halides and, or sodium halides. Efficient visible emission from the rare earth atomic and molecular fragments in the discharge is combined with the red emission from calcium monohalide to provide an efficient, warm source.
Inventors
- 👤 Jerry Kramer
- 👤 Walter P. Lapatovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:37
CPC Classifications
H; H01; H01J; H01J65/00; H01J65/04; H01J65/042; H01J65/048; H01J61/00; H01J61/02; H01J61/12; H01J61/125; H01J61/82; H01J61/827
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
149 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 4.8 mg/cm 3 of cesium iodide, and an inert gas; said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope; said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 2
Dependent Claim
149 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 4.8 mg/cm 3 of cesium iodide, and an inert gas; said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope; said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 3
Dependent Claim
88 words
An electroded high pressure electric discharge lamp having an enhanced red emission in accordance with claim 1 wherein said fill gas consisting essentially of from about 4.0 to about 9.0 mg/cm 3 of mercury, from about 0.5 to about 2.5 mg/cm 3 of cerium iodide, from about 0.5 to about 2.5 mg/cm 3 of thulium iodide, from about 1.8 to about 8.5 mg/cm 3 of calcium iodide, from about 0.6 to about 3.0 mg/cm 3 of cesium iodide, and from about 15 to about 50 Torr of argon.
Claim 4
Dependent Claim
64 words
An electroded high pressure electric discharge lamp having an enhanced red emission in accordance with claim 1 wherein said fill gas consisting essentially of about 7.0 mg/cm 3 of mercury, about 1.0 mg/cm 3 of cerium iodide, about 1.0 mg/cm 3 of thulium iodide, about 3.4 mg/cm 3 of calcium iodide, about 1.2 mg/cm 3 of cesium iodide, and about 45 Torr of argon.
Claim 5
Dependent Claim
148 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas being contained within said refractory inner envelope, said gas fill consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 11.2 mg/cm 3 of sodium iodide, and an inert gas; said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope; said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 6
Dependent Claim
148 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas being contained within said refractory inner envelope, said gas fill consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 11.2 mg/cm 3 of sodium iodide, and an inert gas; said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope; said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 7
Dependent Claim
88 words
An electroded high pressure electric discharge lamp having an enhanced red emission in accordance with claim 4 wherein said fill gas consisting essentially of from about 4.0 to about 9.0 mg/cm 3 of mercury, from about 0.5 to about 2.5 mg/cm 3 of cerium iodide, from about 0.5 to about 2.5 mg/cm 3 of thulium iodide, from about 1.8 to about 8.5 mg/cm 3 of calcium iodide, from about 1.4 to about 7.0 mg/cm 3 of sodium iodide, and from about 15 to about 50 Torr of argon.
Claim 8
Dependent Claim
63 words
A high pressure electric discharge lamp having an enhanced red emission in accordance with claim 4 wherein said fill gas consisting essentially of about 7.0 mg/cm 3 of mercury, about 1.0 mg/cm 3 of cerium iodide, about 1.0 mg/cm 3 of thulium iodide, about 3.4 mg/cm 3 of calcium iodide, about 2.8 mg/cm 3 of sodium iodide, and about 45 Torr of argon.
Claim 9
Dependent Claim
95 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 4.8 mg/cm 3 of cesium iodide, and an inert gas.
Claim 10
Dependent Claim
95 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 4.8 mg/cm 3 of cesium iodide, and an inert gas.
Claim 11
Dependent Claim
89 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission in accordance with claim 7 wherein said fil gas consisting essentially of from about 4.0 to about 9.0 mg/cm 3 of mercury, from about about 0.5 to about 2.5 mg/cm 3 of cerium iodide, from about 0.5 to about 2.5 mg/cm 3 of thulium iodide, from about 1.8 to about 8.5 mg/cm 3 of calcium iodide, from about 0.6 to about 3.0 mg/cm 3 of cesium iodide, and from about 2.8 to about 7.5 Torr of argon.
Claim 12
Dependent Claim
64 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission in accordance with claim 7 wherein said fill gas consisting essentially of about 7.0 mg/cm 3 of mercury, about 1.0 mg/cm 3 of cerium iodide, about 1.0 mg/cm 3 of thulium iodide, about 3.4 mg/cm 3 of calcium iodide, about 1.2 mg/cm 3 of cesium iodide, and about 5.0 Torr of argon.
Claim 13
Dependent Claim
95 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 11.2 mg/cm 3 of sodium iodide, and an inert gas.
Claim 14
Dependent Claim
95 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas being contained within said refractory inner envelope, said fill gas consisting essentially of from about 1.0 to about 11.0 mg/cm 3 of mercury, from about 0.1 to about 4.0 mg/cm 3 of cerium iodide, from about 0.1 to about 4.0 mg/cm 3 of thulium iodide, from about 0.3 to about 13.6 mg/cm 3 of calcium iodide, from about 0.1 to about 11.2 mg/cm 3 of sodium iodide, and an inert gas.
Claim 15
Dependent Claim
88 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission in accordance with claim 10 wherein said fill gas consisting essentially of from about 4.0 to about 9.0 mg/cm 3 of mercury, from about 0.5 to about 2.5 mg/cm 3 of cerium iodide, from about 0.5 to about 2.5 mg/cm 3 of thulium iodide, from about 1.8 to about 8.5 mg/cm 3 of calcium iodide, from about 1.4 to about 7.0 mg/cm 3 of sodium iodide, and from about 2.8 to about 7.5 Torr of argon.
Claim 16
Dependent Claim
64 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission in accordance with claim 10 wherein said fill gas consisting essentially of about 7.0 mg/cm 3 of mercury, about 1.0 mg/cm 3 of cerium iodide, about 1.0 mg/cm 3 of thulium iodide, about 3.4 mg/cm 3 of calcium iodide, about 2.8 mg/cm 3 of sodium iodide, and about 5.0 Torr of argon.
Claim 17
Dependent Claim
106 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas consisting essentially of mercury, cerium iodide, thulium iodide, cesium iodide, calcium iodide, sodium iodide and an inert gas; said fill gas being contained within said refractory inner envelope, said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope, said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 18
Dependent Claim
106 words
An electroded high pressure electric discharge lamp having an enhanced red emission comprising: an outer envelope, a base, a refractory inner envelope, an inner envelope support frame, two electrodes, and a fill gas; said fill gas consisting essentially of mercury, cerium iodide, thulium iodide, cesium iodide, calcium iodide, sodium iodide and an inert gas; said fill gas being contained within said refractory inner envelope, said inner envelope, said support frame, and said electrical connectors being contained within said outer envelope, said base being connected to said outer envelope and said electrode connectors, said electrical connectors being connected to said base, said inner envelope, and said electrodes.
Claim 19
Dependent Claim
52 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas consisting essentially of mercury, cerium iodide, thulium iodide, cesium iodide, calcium iodide, sodium iodide and an inert gas; said fill gas being contained within said refractory inner envelope.
Claim 20
Dependent Claim
52 words
An electrodeless high pressure electric discharge lamp having an enhanced red emission comprising: a refractory inner envelope containing a fill gas; said fill gas consisting essentially of mercury, cerium iodide, thulium iodide, cesium iodide, calcium iodide, sodium iodide and an inert gas; said fill gas being contained within said refractory inner envelope.
References Cited (Backward Citations)
US3319119A
Cited
US3654506A
Cited
US3852630A
Cited
US3798487A
Cited
DE2422411A1
Cited
JPS5193575A
Cited
US4029425A
Cited
US4027190A
Cited
US4171498A
Cited
US4243906A
Cited
US4178534A
Cited
US4360758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |