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:
Oct. 03, 2006
Filed:
Jan. 07, 2005
Holger Claus, Lake Forest, CA (US);
Andre Piotrowski, Oceanside, CA (US);
Holger Claus, Lake Forest, CA (US);
Andre Piotrowski, Oceanside, CA (US);
Ushio America, Inc., Cypress, CA (US);
Abstract
A method of stabilizing an arc between electrode tips in a high pressure arc discharge lamp is provided comprising initially creating an arc between the pair of electrodes during a start-up phase of the lamp by supplying power to the lamp for a first period. The method then transitions the arc to attach itself between the tips of the electrodes by removing the power supplied to the lamp for a second period and then resupplying power to the lamp after completion of the second period. The first and second periods for respectively initially supplying and removing power are preferably selected based on either an elapsed period of time, the measured operating lamp voltage, or the measured lamp pressure. Once the arc becomes attached to the tips of the electrodes in this manner, the arc will remain stabilized between the electrode tips during operation of the discharge lamp.