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Method and system for monitoring performance of a discharge lamp and corresponding lamp

A discharge lamp and performance technology, applied in the field of monitoring discharge lamp performance, can solve the problem that lamp diagnosis is not straightforward and reliable, and achieve the effect of reliable diagnosis

Inactive Publication Date: 2012-08-01
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, diagnosis of lamp performance is not straightforward and reliable

Method used

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  • Method and system for monitoring performance of a discharge lamp and corresponding lamp
  • Method and system for monitoring performance of a discharge lamp and corresponding lamp
  • Method and system for monitoring performance of a discharge lamp and corresponding lamp

Examples

Experimental program
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Embodiment Construction

[0016] figure 1 is a schematic diagram of a self-diagnosing irradiation system 100 in accordance with the present invention. The system 100 comprises a discharge lamp 10 , a first monitoring unit 20 , a second monitoring unit 30 and a control unit 40 .

[0017] like figure 2 As shown, the discharge lamp 10 comprises electrodes 11 and a discharge vessel 12 filled with gas 121 and equipped with a luminescent layer 122 . It should be understood that figure 2 And the electrode 11 shown in the following figures is only a simple illustration, and the detailed configuration can refer to the prior art. When the gas 121 is excited by the electric field generated by the electrode 11, at least a part of the gas 121 is converted into plasma and emits first ultraviolet light UV1 predominant in the first spectral range. At least a portion of the first ultraviolet light UV1 is then converted by the luminescent layer 122 into second ultraviolet light UV2 in a second spectral range havin...

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Abstract

The present invention provides a method of monitoring performance of a discharge lamp. The discharge lamp includes electrodes and a discharge vessel filled with gas and equipped with a luminescent layer, wherein the gas is intended to emit a first ultraviolet light in a first spectral range when the gas is excited by an electric field produced by the electrodes, and at least part of the first ultraviolet light is intended to be changed into a second ultraviolet light in a second spectral range of longer wavelength than the first spectral range by the luminescent layer. The method comprises the steps of finding the value of a first intensity of the first ultraviolet light; finding the value of a second intensity of the second ultraviolet light; and determining the conversion efficiency of the luminescent layer for converting the first ultraviolet light into the second ultraviolet light on the basis of the ratio of the value of the second intensity to the value of the first intensity.

Description

technical field [0001] The present invention relates generally to methods of monitoring the performance of discharge lamps, and more particularly to methods of monitoring the performance of discharge lamps for outputting ultraviolet light. [0002] The invention also relates to a system comprising a discharge lamp and which can be used to carry out the method according to the invention. Background technique [0003] For conventional ultraviolet (UV) lamps, a visible light sensor is used to detect the intensity of the visible spectral lines produced by the plasma. The intensity of the visible spectral lines is related to the intensity of the UV light inside the lamp. This provides a cost effective detection system for monitoring the performance of UV lamps. However, for UV dielectric barrier discharge (DBD) lamps or other similar types of UV lamps, since no visible light is emitted from the lamp, visible light sensors cannot be used to monitor the performance of such UV lam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/04H05B41/28
CPCY02B20/22H05B41/2813Y02B20/00
Inventor 朱晓燕G.格罗伊尔L.P.巴克C.R.朗达T.于斯特尔
Owner KONINK PHILIPS ELECTRONICS NV