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Reduced mass end plugs for voidless CMH lamps

A technology for manufacturing lamps and molds, which is applied in the field of gapless ceramic metal halide lamps and can solve problems such as the inability of lamps to operate.

Inactive Publication Date: 2015-05-20
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the salt penetrates the sealing frit, the salt and other materials fed into the body of the tube will escape and the lamp will become inoperable

Method used

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  • Reduced mass end plugs for voidless CMH lamps
  • Reduced mass end plugs for voidless CMH lamps
  • Reduced mass end plugs for voidless CMH lamps

Examples

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Embodiment Construction

[0029] Reference will now be made in detail to various embodiments of the present invention, and one or more examples of embodiments of the present invention are illustrated in the accompanying drawings. Each example is provided in a way to explain the present invention but not to limit the present invention. In fact, those skilled in the art can easily understand that various modifications and changes can be made to the present invention without departing from the scope or spirit of the present invention. For example, features illustrated or described as part of one embodiment can be used in other embodiments, resulting in another embodiment. Therefore, the present invention intends to cover such modifications and changes within the scope of the appended claims and their equivalents.

[0030] figure 1 A perspective view showing an exemplary embodiment of the lamp 100 of the present invention, and figure 2 A cross-sectional view of the lamp 100 is provided. The lamp 100 inclu...

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Abstract

A voidless CMH lamp and a method of making such a lamp are provided. The CMH lamp includes a lamp body that receives at least one end plug. The end plug is constructed from a core of cermet material received within an outer layer of a ceramic material. An electrode is placed into the cermet material. The application of heat causes the cermet material to contract and eliminate voids between the lamp and cermet material. Co-sintering of the lamp, core, and outer layer provides a hermetic seal without necessarily using e.g., a sealing frit. Sintering of the ceramic material surrounding the cermet can be also used to improve light output and photometric performance of the lamp. The creation of one or more openings or recesses in the end plug can also provide performance improvements.

Description

[0001] Statement on research sponsored by the federal government [0002] This application claims the rights of US Provisional Patent Application No. 61 / 700,006 filed on September 12, 2012, which is incorporated into this specification by reference for all purposes. Technical field [0003] The subject of the present invention generally relates to gapless ceramic metal halide lamps. Background technique [0004] Ceramic metal halide (CMH) lamps (sometimes referred to as ceramic discharge metal halide lamps) generally include a tube or lamp body constructed from a ceramic material such as sintered alumina, the tube or lamp body forming a dose of (for example) mercury, argon And the chamber into which the halide salt is introduced. The electrode is positioned at the end of the tube, and when energized, it will cause the lamp to glow. Depending on the mixture of halogenated salts, the light emitted can be very similar to natural sunlight. In addition, under the same light output, CM...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/26H01J9/32H01J9/24H01J61/36
CPCH01J61/363H01J9/247H01J9/26H01J9/266H01J9/32H01J9/323H01J9/395
Inventor R.拉麦亚M.E.理查兹D.A.汤普森
Owner GENERAL ELECTRIC CO