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:
Apr. 25, 2017
Filed:
Nov. 17, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Satoshi Kito, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); G03B 21/00 (2006.01); G03B 21/20 (2006.01); H05B 41/292 (2006.01);
U.S. Cl.
CPC ...
G03B 21/006 (2013.01); G03B 21/2053 (2013.01); H05B 41/2928 (2013.01); G03B 21/2026 (2013.01); Y02B 20/208 (2013.01);
Abstract
A discharge lamp driving device includes a discharge lamp driving section configured to supply a driving current to a discharge lamp, the driving current being an alternating current for driving the discharge lamp, and a control section configured to control the discharge lamp driving section. The control section controls the discharge lamp driving section such that the driving current having a driving frequency different from a natural frequency of the discharge lamp and a frequency of 1/2n (n is a natural number) times the natural frequency is supplied to the discharge lamp.