Street lighting lamp with long life, high efficiency, and high lumen maintenance
AssigneeGeneral Electric Company
InventorsTimthoy David Russell, Gergely Ormandlaky, Gabor Mikovics
Life of this patent
Estimating the term…
Abstract
A lamp includes a discharge vessel and electrodes extending into the discharge vessel. The lamp further includes an ionizable fill sealed within the vessel. The fill includes an inert gas and a halide component. The halide component includes a sodium halide, a thallium halide, at least one of a calcium halide and a strontium halide, and at least one of a rare earth halide. The rare earth halide is selected from the group consisting of lanthanum, cerium, praseodymium, samarium and neodymium, and combinations thereof.
Claims30
A lamp comprising:
- a discharge vessel;
- electrodes extending into the discharge vessel,
- an ionizable fill sealed within the vessel, the fill including:
- an inert gas, a halide component including:
- a sodium halide,
- a thallium halide,
- at least one of a calcium halide and a strontium halide, and
- at least one of a rare earth halide selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, and samarium, and combinations thereof.
A method of forming a lamp, comprising:
- providing a discharge vessel;
- sealing an ionizing fill within the vessel, the fill including;
- an inert gas, a halide component including:
- a sodium halide,
- a thallium halide,
- at least one of a calcium halide and a strontium halide,
- at least one of a rare earth halide selected from the group consisting of lanthanum, cerium, praseodymium, and neodymium;
- and
- positioning electrodes within the discharge vessel to energize the fill in response to a voltage applied thereto.
A lamp comprising:
- a discharge vessel:
- electrodes extending into the discharge vessel,
- an ionizable fill sealed within the vessel, the fill including:
- an inert gas, a halide component including:
- a sodium halide,
- a thallium halide,
- at least one of a calcium halide and a strontium halide, and
- at least one of a rare earth halide selected from the group consisting of lanthanum, cerium, praseodymium, and neodymium, and combinations thereof;
- and
- wherein an aspect ratio of the discharge tube is satisfied by:
- 2.0<EA/Di<4.8
- where EA=a distance between the electrodes, and
- Di=an inner diameter of the discharge vessel.
Dependencies are inferred from the claim text.