The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2002
Filed:
Feb. 14, 2000
Masashi Okamoto, Akashi, JP;
Takashi Asahina, Takasago, JP;
Masaki Yoshioka, Himeji, JP;
Takafumi Mizojiri, Himeji, JP;
Kenichi Hirose, Himeji, JP;
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Abstract
A dielectric-barrier discharge lamp light source with a dielectric-barrier discharge lamp, the light source including a discharge plasma space filled with a discharge gas in which excimer molecules are formed by dielectric-barrier discharge, two electrodes adapted to induce a discharge phenomenon in the discharge gas, at least one of the two electrodes being separated from the discharge gas by a dielectric, and a power supply for impressing a substantially cyclical, high-voltage alternating current on the two electrodes of the dielectric-barrier discharge lamp in a manner that when the power supply completes a discharge in the dielectric-barrier discharge lamp and the voltage impressed on the dielectric-barrier discharge lamp changes for a subsequent discharge, there is a period of gradual change in a lamp voltage waveform (Vs(t)) before reaching a voltage required for beginning of the subsequent discharge, wherein subsequent to the period of gradual change, the voltage impressed on the dielectric-barrier discharge lamp by the power supply changes sharply.