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ELECTRODELESS PLASMA LAMP, LAMP DEVICE AND confinement member for an electrodeless plasma lamp

A technology of plasma lamps and limiting components, applied in the field of ion lamps, can solve the problems of electromagnetic compatibility and hinder the widespread use of equipment, etc.

Inactive Publication Date: 2020-12-08
トパンガ アジア リミテッド
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in such arrangements, electromagnetic compatibility (EMC) issues caused by residual electric fields leaking into the bulb and surrounding areas remain problematic and prevent widespread use of such devices

Method used

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  • ELECTRODELESS PLASMA LAMP, LAMP DEVICE AND confinement member for an electrodeless plasma lamp
  • ELECTRODELESS PLASMA LAMP, LAMP DEVICE AND confinement member for an electrodeless plasma lamp
  • ELECTRODELESS PLASMA LAMP, LAMP DEVICE AND confinement member for an electrodeless plasma lamp

Examples

Experimental program
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Embodiment Construction

[0031] Figure 1A with Figure 1B A simplified view of an exemplary embodiment of a prior art electrodeless plasma lamp is shown.

[0032] As depicted, lamp 10 has a lamp body or housing 20 with a wide bottom portion 22 and a narrower top portion 24 of large diameter. The lamp body is filled with air 26 or other gas such as nitrogen or fluid, or alternatively may be a vacuum. The surface of the housing is conductive; this may be an intrinsic property of the material of the housing 20, or result from the application of a conductive sheet.

[0033] The input coupling-element 30 is connected to an upper surface 31 of the lamp body 20 (which will be understood to be at ground potential 32). The other end of the input coupling element is connected to the RF connector 33 via the opening 28 in the lamp body 20 . It should be understood that the input coupling-element 30 may be a solid or hollow conductor; or a dielectric material with a conductive coating.

[0034] The RF source ...

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PUM

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Abstract

There is provided an electrodeless plasma lamp, a lamp device and a confinement member for an electrodeless plasma lamp. The lamp comprises a lamp body with an input coupling element, with one end coupled to an RF source and the other end coupled to a first ground potential. An output coupling element is received substantially within the lamp body and spaced apart from the input coupling element and from the top of the lamp body, wherein one end of the output coupling element is coupled to a second ground potential and the other end of the output coupling element at the top of the lamp body iscoupled to a gas filled vessel. An electromagnetic confinement member extends away from the lamp body and surrounds it for reducing emission of electromagnetic waves below a predetermined threshold frequency, and includes a plurality of apertures formed therein.

Description

technical field [0001] The present disclosure relates to electrodeless plasma lamps, especially electrodeless lamps having a high intensity discharge. Background technique [0002] Plasma lamps provide very bright broad-spectrum light and are useful in many applications, especially in large areas including stadiums, parking lots, and high-ceilinged areas where the light source is far from where it is needed (such as factory buildings) General lighting is provided. [0003] In a conventional plasma lamp, a plasma is generated from a mixture of gas and trace species by using a high current flowing between electrodes in close contact. However, the electrodes of these types of plasma lamps usually degrade over long-term use and therefore have a limited lifetime. [0004] Electrodeless plasma lamps have also been developed, where light energy is generated by coupling radio frequency (RF) energy from an RF driver or source to a gas-filled vessel (bulb). Typically, the RF source...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/04H01J65/06H01J61/30
CPCH01J61/30H01J65/042H01J65/06H01J61/10H01J61/04
Inventor 林永耀李远发刘冠聪
Owner トパンガ アジア リミテッド