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:
Sep. 29, 2015
Filed:
Aug. 10, 2012
Applicants:
Junichi Suzuki, Chino, JP;
Satoshi Kito, Chino, JP;
Inventors:
Junichi Suzuki, Chino, JP;
Satoshi Kito, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B 21/20 (2006.01); H05B 41/288 (2006.01); H05B 41/292 (2006.01);
U.S. Cl.
CPC ...
G03B 21/2026 (2013.01); G03B 21/2053 (2013.01); H05B 41/2887 (2013.01); H05B 41/2928 (2013.01); Y02B 20/202 (2013.01);
Abstract
A light source device includes a discharge lamp, and a discharge lamp driving device that supplies a driving current to a pair of electrodes. The discharge lamp driving device includes an alternating current supply unit that supplies an alternating current with a frequency equal to or higher than 1 kHz and equal to or lower than 10 GHz to the electrodes, and a direct current supply unit that supplies a direct current to the electrodes.