Incandescent lamps including a combined getter
AssigneeGTE Products Corporation
InventorJohn W. Shaffer
Life of this patent
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Abstract
This invention relates to incandescent lamps and more particularly to the gettering of such lamps. In accordance with the present invention, there is provided an incandescent lamp comprising an envelope, a tungsten filament mounted within the envelope, a fill gas, and a getter comprising phosphorus and a borane compound and/or partially halogenated derivatives thereof. In accordance with another aspect of the present invention, there is provided a method of gettering an incandescent lamp. The method comprises providing the above-described getter in an unsealed lamp envelope; sealing the lamp envelope; and activating the getter located within the sealed envelope.
Claims23
A method of gettering an incandescent lamp comprising the steps of:
- providing a getter comprising phosphorus and a borane-based compound, selected from the group consisting of a borane compound, a partially halogenated derivative thereof, and mixtures thereof, in an unsealed lamp envelope;
- sealing the lamp envelope;
- and
- activating the getter contained in the sealed envelope.
A method of gettering an incandescent lamp comprising the steps of:
- introducing a phosphorus source into an unsealed envelope;
- treating the phosphorus source contained in the unsealed envelope to produce elemental phosphorus within the unsealed envelope;
- introducing a fill gas and a borane-based compound, selected from the group consisting of a borane compound, a partially halogenated derivative thereof, and mixtures thereof, into the unsealed lamp envelope;
- sealing the lamp envelope;
- and
- activating the elemental phosphorus and borane-based compound contained in the sealed envelope.
An incandescent lamp comprising:
- an envelope;
- a tungsten filament mounted within the envelope;
- a fill gas;
- and
- a getter comprising phosphorus and a borane-based compound, selected from the group consisting of a borane compound, a partially halogenated derivative thereof, and mixtures thereof.
A tungsten halogen incandescent lamp comprising:
- an envelope;
- a tungsten filament mounted within the envelope;
- a fill gas comprising a halogen, hydrogen and an inert gas;
- and
- a getter comprising phosphorus and a borane-based compound, selected from the group consisting of a borane compound, a partially halogenated derivative thereof, and mixtures thereof.
An incandescent lamp comprising:
- a sealed envelope;
- a tungsten filament mounted within the envelope;
- and
- a fill gas;
- a getter comprising phosphorus and a borane-based compound, selected from the group consisting of a borane compound, a partially halogenated derivative thereof, and mixtures thereof, being provided in the sealed envelope during manufacture of the lamp to getter impurities therein.
Dependencies are inferred from the claim text.