Title:
METHOD AND APPARATUS FOR A HIGH EFFICIENCY ULTRAVIOLET RADIATION SOURCE
Document Type and Number:
WIPO Patent Application WO2004110932
Kind Code:
A3
Abstract:
An efficient, intense ultraviolet radiation source is disclosed that uses electrodes, external to the UV-generating plasma, to eliminate electrode erosion. High-frequency electrical energy is coupled to the UV-emitting plasma capacitively. The electrodes are attached to the glass envelope in such a way as to minimize or eliminate resistive or capacitive losses. The intense ultraviolet radiation source can be generated by applying a continuous or pulsed/gated high-frequency voltage to the glass envelope via the external electrodes. Electrode erosion is eliminated as a reason for lamp failure and the peak intensity that can be generated without damage is greatly increased.
Inventors:
SPIELMAN RICK B (US)
FRAIM MICHAEL L (US)
MERVINI JOSEPH A (US)
FRAIM MICHAEL L (US)
MERVINI JOSEPH A (US)
Application Number:
PCT/US2004/016741
Publication Date:
May 12, 2005
Filing Date:
May 27, 2004
Export Citation:
Assignee:
ABQ ULTRAVIOLET POLLUTION SOLU (US)
SPIELMAN RICK B (US)
FRAIM MICHAEL L (US)
MERVINI JOSEPH A (US)
SPIELMAN RICK B (US)
FRAIM MICHAEL L (US)
MERVINI JOSEPH A (US)
International Classes:
H01J17/00; H01J17/20; H01J61/00; H01J65/04; C02F; (IPC1-7): H01J17/00; H01J17/20; H01J61/00
Foreign References:
| US4983881A | 1991-01-08 | |||
| US5386170A | 1995-01-31 | |||
| US5432398A | 1995-07-11 | |||
| US5929564A | 1999-07-27 |
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