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US 7,215,080 B2Granted
External electrode type discharge lamp and method of manufacturing the same
AssigneeNEC Corporation
InventorsMaki Minamoto, Seiichiro Fujioka
Life of this patent
Estimating the term…
Abstract
In an external electrode type discharge lamp, a gadolinium oxide film obtained by baking solution containing at least one of gadolinium octate and gadolinium propionate is provided in a portion including at least a portion corresponding to an external electrode.
Claims9
An external electrode type discharge lamp comprising:
- a glass envelope encapsulating gas as a discharge medium;
- a pair of electrodes provided on an external surface of said glass envelope, to which voltage causing discharge in said glass envelope is applied;
- and
- a non-porous oxide film provided in a portion of an internal surface of said glass envelope, said portion including at least a portion opposite to each of said external electrodes,
- wherein said non-porous oxide film is made of any one of gadolinium oxide and magnesium oxide.
2 more elements
An external electrode type discharge lamp comprising:
- a hollow airtight glass envelope encapsulating gas as discharge medium;
- a pair of electrodes provided on an external surface of said glass envelope, to which voltage causing discharge in said glass envelope is applied;
- and
- an oxide film having a continuous structure, provided in a portion of an internal surface of said glass envelope, said portion including at least a portion opposite to each of said external electrodes,
- wherein said oxide film having said continuous structure is made of any one of gadolinium oxide and magnesium oxide.
2 more elements
An external electrode type discharge lamp comprising:
- a glass envelope encapsulating gas as a discharge medium;
- a pair of electrodes provided on an external surface of said glass envelope, to which voltage causing discharge in said glass envelope is applied;
- and
- a non-porous oxide film provided in a portion of an internal surface of said glass envelope, said portion including at least a portion opposite to each of said external electrodes,
- wherein said non-porous oxide film is formed by baking any one of gadolinium octate solution, gadolinium propionate solution, mixture solution of gadolinium octate and gadolinium propionate, magnesium acetate solution, magnesium nitrate solution, and mixture solution of magnesium acetate and magnesium nitrate.
2 more elements
An external electrode type discharge lamp comprising:
- a hollow airtight glass envelope encapsulating gas as discharge medium;
- a pair of electrodes provided on an external surface of said glass envelope, to which voltage causing discharge in said glass envelope is applied;
- and
- an oxide film having a continuous structure, provided in a portion of an internal surface of said glass envelope, said portion including at least a portion opposite to each of said external electrodes,
- wherein said oxide film having said continuous structure is formed by baking any one of gadolinium octate solution, gadolinium propionate solution, mixture solution of gadolinium octate and gadolinium propionate, magnesium acetate solution, magnesium nitrate solution, and mixture solution of magnesium acetate and magnesium nitrate.
2 more elements
Dependencies are inferred from the claim text.