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Light source

A technology of light source and main body, which is applied in the direction of discharge lamps, electrical components, gas discharge lamps, etc., and can solve problems such as unsuitable lamps

Inactive Publication Date: 2017-05-10
CERAVISION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is not a problem for e.g. street lighting, but this type of light is not suitable for many applications

Method used

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Examples

Experimental program
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Embodiment Construction

[0062] with reference to the attached Figure 1 to Figure 4 , the light source 1 has a base 2 for supporting a transparent crucible 3 . The base is round aluminum with a ceramic insert 4 in it. The insert has a notch 5 for the end 6 of the enclosure / bulb / envelope 21 and a hole through which the microwave transmitting antenna 8 extends. A mesh Faraday cage 9 surrounds the crucible in contact with it and is secured to the base by screws 10, thereby retaining the crucible on the base. These features are consistent with our current product, except that the crucible is now manufactured as a hollow containing excitable material with a central seal.

[0063] The crucible is fused silica, 20 mm long between end planes 11 and 49 mm in diameter.

[0064]According to the invention we provide a loose envelope or bulb 21 housed in a central container 22 of the crucible. The conventional excitable material hollow in our bulb has an inner diameter of about 4 mm, which corresponds to an o...

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PUM

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Abstract

A light source to be powered by microwave energy, having a dielectric body or fabrication of material lucent for exit of light therefrom, a receptacle within the dielectric body or fabrication, and a lucent microwave-enclosing Faraday cage surrounding the dielectric body or fabrication. The dielectric body or fabrication within the Faraday cage forms at least part of a microwave resonant cavity. A sealed plasma enclosure of lucent material within the receptacle has a means for locating the plasma enclosure within the receptacle with respect to the dielectric body or fabrication.

Description

technical field [0001] The present invention relates to light sources for microwave powered lamps. Background technique [0002] It is known to stimulate a discharge in a capsule to generate light. Typical examples are sodium discharge lamps and fluorescent tube lamps. The latter uses mercury vapor, which produces ultraviolet radiation. This in turn excites the phosphor powder to produce light. These lamps are more efficient in terms of lumens of light emitted per watt of electricity consumed compared to tungsten filament lamps. However, they still suffer from the disadvantage of requiring electrodes within the enclosure. As these electrodes carry the current required for discharge, they degrade and eventually fail. [0003] We have developed electrodeless bulb lamps as described in our patent applications: No. PCT / GB2006 / 002018 for lamps (our "'2018 lamps"), No. PCT / GB2005 / 005080 for lamps for lamps and No. PCT / GB2007 / 001935 for matching circuits for microwave powered...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/04
CPCH01J65/044H01J61/302H01J61/33
Inventor A·S·尼特E·C·奥德尔J·斯托克斯
Owner CERAVISION LTD