Claims
- 1. An electrodeless discharge lamp bulb, comprising:
an aspherical light transmissive envelope having a length between respective ends of the envelope along an axis which is greater than a maximum distance between opposed interior surfaces of the envelope perpendicular to the axis; and a fill material disposed in the envelope including at least of one sulfur, selenium, and tellurium, wherein the size of the envelope and the amount of the fill material is selected to provide a thermal profile during operation without rotation which inhibits the formation of long chain species.
- 2. The discharge lamp bulb as recited in claim 1, wherein the fill material includes sulfur and wherein the amount of sulfur is selected to provide a sulfur fill pressure in excess of five atmospheres during operation, thereby providing visible light from molecular radiation.
- 3. The discharge lamp bulb as recited in claim 2, wherein the amount of sulfur is selected to provide a sulfur fill pressure in excess of ten atmospheres during operation.
- 4. The discharge lamp bulb as recited in claim 1, wherein the envelope has a capsule shape with the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis being less than 5 mm and the length between respective ends of the envelope along the axis being at least twice the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis.
- 5. The discharge lamp bulb as recited in claim 1, wherein the envelope has a capsule shape with the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis being less than 4 mm and the length between respective ends of the envelope along the axis being at least three times the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis.
- 6. The discharge lamp bulb as recited in claim 1, wherein the envelope has a prolate ellipsoid shape with an elliptical cross section along the axis, and wherein the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis corresponds to a minor axis of the elliptical cross section and the length between respective ends of the envelope along the axis corresponds to a major axis of the elliptical cross section.
- 7. The discharge lamp bulb as recited in claim 1, wherein the amount of the fill material is at least 1 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material.
- 8. The discharge lamp bulb as recited in claim 1, wherein the amount of the fill material is at least 10 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material.
- 9. The discharge lamp bulb as recited in claim 1, wherein the amount of the fill material is at least 25 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material.
- 10. The discharge lamp bulb as recited in claim 1, wherein the envelope has a capsule shape with the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis being less than 5 mm and the length between respective ends of the envelope along the axis being at least twice the maximum distance between opposed interior surfaces of the envelope perpendicular to the axis,
and wherein the amount of the fill material is at least 1 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material.
- 11. The discharge lamp bulb as recited in claim 10, wherein the maximum distance is less than 4 mm and the length is at least three times the maximum distance.
- 12. The discharge lamp as recited in claim 10, wherein the amount of the fill material is at least 10 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material.
- 13. The discharge lamp bulb as recited in claim 10, wherein the maximum distance is less than 4 mm and the length is at least three times the maximum distance and wherein the amount of the fill material is at least 10 mg/cc for each of the at least of one sulfur, selenium, and tellurium included in the fill material
- 14. An electrodeless discharge lamp, comprising:
a pair of opposed couplers aligned along an axis; a stationary light transmissive envelope positioned between the pair of opposed couplers, the envelope having an interior length along the axis which is greater than a maximum interior dimension of the envelope orthogonal to the axis; a light emitting fill disposed inside the envelope, the fill including at least one fill substance selected from the group of sulfur, selenium, and tellurium in a concentration of at least 1 mg/cc for each selected fill substance; and a power source connected to the couplers, wherein power applied to the couplers from the power source is effective to initiate and sustain a stable light emitting discharge from the fill.
- 15. The discharge lamp as recited in claim 14, wherein the envelope has a capsule shape with the maximum interior dimension orthogonal to the axis being less than 5 mm and the interior length along the axis being at least twice the interior dimension orthogonal to the axis.
- 16. The discharge lamp as recited in claim 14, wherein the envelope has a capsule shape with the maximum interior dimension orthogonal to the axis being less than 4 mm and the interior length along the axis being at least three times the interior dimension orthogonal to the axis.
- 17. The discharge lamp as recited in claim 14, wherein the envelope has a prolate ellipsoid shape with an elliptical cross section along the axis, and wherein the maximum interior dimension orthogonal to the axis corresponds to a minor axis of the elliptical cross section and the interior length along the axis corresponds to a major axis of the elliptical cross section.
- 18. The discharge lamp as recited in claim 14, wherein the concentration for each selected fill substance is at least 10 mg/cc.
- 19. The discharge lamp as recited in claim 14, wherein the concentration for each selected fill substance is at least 25 mg/cc.
- 20. The discharge lamp as recited in claim 14, wherein the envelope has a capsule shape with the maximum interior dimension orthogonal to the axis being less than 5 mm and the interior length along the axis being at least twice the interior dimension orthogonal to the axis,
and wherein the concentration for each selected fill substance is at least 10 mg/cc
- 21. The discharge lamp as recited in claim 20, wherein the maximum interior dimension is less than 4 mm and the length is at least three times the maximum interior dimension.
- 22. The discharge lamp as recited in claim 14, wherein the pair of opposed couplers comprises at least one ring shaped electrode.
- 23. The discharge lamp as recited in claim 14, wherein each of the pair of opposed couplers comprises a ring shaped electrode.
- 24. The discharge lamp as recited in claim 14, wherein the pair of opposed couplers comprises at least one bowl shaped electrode.
- 25. The discharge lamp as recited in claim 14, wherein each of the pair of opposed couplers comprises a bowl shaped electrode.
- 26. The discharge lamp as recited in claim 14, wherein the pair of opposed couplers are adapted to initiate and terminate the discharge inward of the absolute ends of the envelope along the axis.
- 27. An electrodeless discharge lamp, comprising:
a stationary light transmissive envelope; a pair of opposed couplers aligned along an axis with the envelope positioned between the pair of opposed couplers, the envelope having a capsule shape with an interior length along the axis which is at least twice greater than a maximum interior dimension of the envelope orthogonal to the axis, wherein the pair of opposed couplers are adapted to initiate and terminate a discharge inward of the absolute ends of the envelope along the axis; a light emitting fill disposed inside the envelope, the fill including at least one fill substance selected from the group of sulfur, selenium, and tellurium in a concentration of at least 1 mg/cc for each selected fill substance; and a power source connected to the couplers, wherein power applied to the couplers from the power source is effective to initiate and sustain a stable light emitting discharge from the fill.
- 28. The discharge lamp as recited in claim 27, wherein the maximum interior dimension orthogonal to the axis is less than 5 mm.
- 29. The discharge lamp as recited in claim 27, wherein the concentration for each selected fill substance is at least 10 mg/cc.
- 30. The discharge lamp as recited in claim 27, wherein the pair of opposed couplers comprises at least one ring shaped electrode.
- 31. The discharge lamp as recited in claim 27, wherein each of the pair of opposed couplers comprises a ring shaped electrode.
- 32. The discharge lamp as recited in claim 27, wherein the pair of opposed couplers comprises at least one bowl shaped electrode.
- 33. The discharge lamp as recited in claim 27, wherein each of the pair of opposed couplers comprises a bowl shaped electrode.
RELATED APPLICATIONS
[0001] This application is based on and claims priority to U.S. Provisional Application No. 60/281,370, filed Apr. 5, 2001.
Government Interests
[0002] Certain inventions described herein were made with Government support under Contract Nos. DE-FC01-97EE23776 and DE-FC26-01 NT41198 awarded by the Department of Energy (DOE). The Government has certain rights in those inventions.
Provisional Applications (1)
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Number |
Date |
Country |
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60281370 |
Apr 2001 |
US |