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Light source powered by microwaves

A microwave source and light source technology, applied in the field of light source, can solve problems such as impedance mismatch

Inactive Publication Date: 2015-06-24
CERAVISION LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This creates an impedance mismatch with the output impedance of the microwave source driving the lamp

Method used

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  • Light source powered by microwaves
  • Light source powered by microwaves
  • Light source powered by microwaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0073] Referring to the drawings, an electrodeless, microwave light bulb 1 has:

[0074] The magnetron 2 operating at 2.45 GHz is equipped with a cooling fan 21 and a pipe 22, which is a conventional magnetron used in microwave ovens;

[0075] ·Air waveguide matching circuit 3, the air waveguide matching circuit 3 is a rectangular aluminum slot 21 enclosing a cavity 32 filled with air, wherein the cavity 32 is rectangular in section perpendicular to its length. In order to input the microwaves into the cavity, the output antenna 23 of the magnetron extends through a hole 33 in a lid 34 closing the enclosure. The edge 35 of the hole 33 is in solid ground contact with the ground mesh 24 surrounding the magnetron antenna. The internal dimensions of this waveguide are:

[0076] Length 121.7mm

[0077] Width 72.9mm

[0078] 42.8mm high.

[0079] The length of the waveguide is one wavelength λ of microwave radiation of 2.45 GHz in air, which is adjusted according to the shape o...

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Abstract

An electrodeless, microwave lamp has a magnetron as a microwave source and an excitable material lucent crucible in whose excitable material a plasma is established. For coupling microwaves from the magnetron into the crucible, an air wave guide coupling circuit is provided, with an output of the magnetron as an input at one quarter lambda from one end and an output at one quarter from the other end as an input to a connection to the crucible.

Description

technical field [0001] The invention relates to a light source. Background technique [0002] Described and claimed in U.S. Patent No. 6,737,809: [0003] 1. A lamp, comprising: [0004] (a) a waveguide having a body comprising ceramic dielectric material of a preselected configuration and preselected dimensions, the body having a first side defined by a first waveguide outer surface; [0005] (b) a first microwave feed member disposed within and in intimate contact with the waveguide body, adapted to direct microwave energy from a preselected frequency and intensity having an output and an input in the frequency range of about 0.5 to 30 GHz an operative microwave source coupled into the body, said feed member connected to the output of the microwave source, the frequency and intensity selected and the configuration and dimensions of the body selected to place the body in at least one resonant mode having at least one maximum electric field Lower resonance; [0006] (c) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J65/04H05B41/24
CPCH05B41/2806H01J65/044H01J2237/24405Y02B20/00
Inventor A·S·尼特
Owner CERAVISION LTD